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# An .aiignore file follows the same syntax as a .gitignore file.
# .gitignore documentation: https://git-scm.com/docs/gitignore
# you can ignore files
.DS_Store
*.log
*.tmp
# or folders
dist/
build/
out/

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{
"mcpServers": {
"brain-cloud": {
"command": "node",
"args": [
"brainy-mcp-server.js"
],
"env": {
"CUSTOMER_ID": "demo-test-auto",
"BRAIN_CLOUD_URL": "https://brain-cloud.dpsifr.workers.dev"
}
}
}
}

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# Brainy Architecture Reference
## What Is Brainy
@soulcraft/brainy (v7.17.0) is a Universal Knowledge Protocol -- a Triple Intelligence database combining vector search, graph traversal, and metadata filtering in a single library. Published to npm as a public MIT-licensed package.
## Core Architecture
### Storage Layer (`src/storage/`)
- **StorageAdapter interface** (`src/coreTypes.ts:576`): The contract ALL storage backends implement. ALWAYS check this interface before adding storage methods.
- **BaseStorage** (`src/storage/baseStorage.ts`): Base implementation with built-in type-aware partitioning (TypeAwareStorageAdapter was removed -- functionality merged into BaseStorage).
- **Adapters** (`src/storage/adapters/`):
- `fileSystemStorage.ts` -- local filesystem
- `memoryStorage.ts` -- in-memory
- `baseStorageAdapter.ts` -- shared adapter base (counts, batch ops)
- Cloud + OPFS adapters were removed in 8.0 (cloud backup is operator tooling)
- **Generational MVCC / Db API** (`src/db/`): immutable `Db` values over generation-stamped records
- `db.ts` (the `Db` value), `generationStore.ts` (record layer + commit protocol), `types.ts`, `errors.ts`, `whereMatcher.ts`
- Design record: `docs/ADR-001-generational-mvcc.md`; replaced the pre-8.0 COW branching + versioning subsystems
### Vector Search (`src/hnsw/`)
- `hnswIndex.ts` -- HNSW-based approximate nearest neighbor search
- `typeAwareHNSWIndex.ts` -- type-partitioned vector search
- NOT in `src/intelligence/` (that directory does not exist)
### Graph Engine (`src/graph/`)
- `graphAdjacencyIndex.ts` -- adjacency-based graph representation
- `pathfinding.ts` -- relationship traversal and pathfinding
- `lsm/` -- LSM tree implementation for graph storage
### Metadata Index (`src/utils/metadataIndex.ts`)
- O(1) exact match via hash indexes
- O(log n) range queries via sorted indexes
- Roaring bitmap set operations for efficient filtering
- Adaptive chunking strategy (`metadataIndexChunking.ts`)
- Caching layer (`metadataIndexCache.ts`)
### Triple Intelligence (`src/triple/`)
- `TripleIntelligenceSystem.ts` -- combines vector + graph + metadata into unified queries
- Lazy-loaded indexes (loaded on first use, not at startup)
### Neural/AI Components (`src/neural/`)
- Smart Importers (`src/importers/`): CSV, Excel, PDF, DOCX, YAML, JSON, Markdown, Orchestrator
- `SmartExtractor.ts` -- entity extraction from unstructured data
- `SmartRelationshipExtractor.ts` -- relationship detection
- `NeuralEntityExtractor.ts` -- ML-based entity recognition
- Natural language processing utilities
### Distributed Systems (`src/distributed/`)
- Distributed Coordinator for multi-node operation
- Shard Manager for data partitioning
- Cache Synchronization across nodes
- Read/Write separation
- Network and HTTP transport layers
- Storage discovery and shard migration
### Transaction Management (`src/transaction/`)
- TransactionManager for ACID operations
- Operations: SaveNoun, AddToHNSW, UpdateMetadata, etc.
- Distributed transaction support
### Integration Hub (`src/integrations/`)
- Google Sheets integration
- OData (Open Data Protocol)
- Server-Sent Events (SSE)
- Webhooks
- Event bus system
### Virtual Filesystem (`src/vfs/`)
- `VirtualFileSystem.ts` -- full VFS implementation (87 KB)
- `PathResolver.ts`, `FSCompat.ts`, `MimeTypeDetector.ts`, `TreeUtils.ts`
- Subdirectories: `semantic/` (semantic search), `streams/` (streaming), `importers/`
### MCP Support (`src/mcp/`)
- BrainyMCPAdapter, MCPAugmentationToolset, BrainyMCPService
- Model Control Protocol request/response handling
### Aggregation Engine (`src/aggregation/`)
- **AggregationIndex** (`AggregationIndex.ts`): Write-time incremental aggregation — SUM, COUNT, AVG, MIN, MAX with GROUP BY and time windows
- **Time Windows** (`timeWindows.ts`): ISO 8601 bucketing — hour, day, week, month, quarter, year, custom intervals
- **Materializer** (`materializer.ts`): Debounced writes of aggregate results as `NounType.Measurement` entities
- Integrates into `brain.find({ aggregate })` for unified query API
- Write hooks in `add()`, `update()`, `delete()` for O(1) incremental updates
- `'aggregation'` provider key enables native plugin acceleration
### Additional Systems
- **CLI** (`src/cli/`): Complete command-line tool with interactive mode and catalog system
- **Migration** (`src/migration/`): MigrationRunner for database schema migrations
- **Embeddings** (`src/embeddings/`): Embedding manager with Candle-WASM Rust source
- **Streaming** (`src/streaming/`): Pipeline support with adaptive backpressure
- **Versioning** (`src/versioning/`): VersioningAPI for data versioning
- **Plugin System**: Registry-based plugin architecture
- **Patterns** (`src/patterns/`): 7 pattern library JSON files
## Type System
- **NounType** (42 types, `src/types/graphTypes.ts:850-893`): Person, Organization, Concept, Collection, Document, Task, Project, etc.
- **VerbType** (127 types, `src/types/graphTypes.ts:900-1087`): Contains, RelatedTo, PartOf, Creates, DependsOn, MemberOf, etc.
- All types in `src/types/`
## Module Exports (`src/index.ts`)
38+ named exports including: Brainy class, configuration types, neural APIs (NeuralImport, NeuralEntityExtractor, SmartExtractor, SmartRelationshipExtractor), distance functions, plugin system, migration system, embedding functions, storage adapters, COW infrastructure, pipeline utilities, graph types, MCP components, integration hub, OData utilities, and more.
## File Structure
```
src/
├── index.ts # 38+ public exports
├── brainy.ts # Main Brainy class (6,500+ lines)
├── setup.ts # Initialization polyfills
├── coreTypes.ts # StorageAdapter interface + core types
├── storage/
│ ├── baseStorage.ts # Base storage (includes type-aware)
│ ├── adapters/ # All storage backends + cloud adapters
│ └── cow/ # Copy-on-Write versioning
├── hnsw/ # HNSW vector search
├── graph/ # Graph engine + pathfinding + LSM
├── triple/ # Triple Intelligence system
├── neural/ # Smart extractors + NLP
├── importers/ # File format importers (8 types)
├── distributed/ # Distributed database (16 files)
├── transaction/ # ACID transactions (6 files)
├── integrations/ # Sheets, OData, SSE, Webhooks
├── vfs/ # Virtual filesystem + semantic search
├── mcp/ # Model Control Protocol
├── cli/ # Command-line interface
├── migration/ # Schema migrations
├── embeddings/ # Embedding manager + Candle-WASM
├── streaming/ # Pipeline + backpressure
├── versioning/ # Versioning API
├── types/ # TypeScript type definitions
├── utils/ # Metadata index, logging, etc.
├── config/ # Configuration system
├── patterns/ # Pattern library
├── api/ # API layer
├── interfaces/ # Interface definitions
├── shared/ # Shared utilities
├── data/ # Data utilities
├── errors/ # Error handling
├── critical/ # Critical error handling
├── universal/ # Universal utilities
├── import/ # Import functionality
└── scripts/ # Build scripts
```
## Initialization
`brainy.ts` `init()` method performs initialization cascade:
1. Load plugins
2. Initialize storage
3. Enable COW (Copy-on-Write)
4. Set up embeddings
5. Initialize caches
6. Set up graph indexes
7. Initialize VFS
8. Set up transaction manager
9. Initialize distributed components (if enabled)
## Testing
- Framework: Vitest
- Run: `npm test`
- Test directories:
- `tests/unit/` -- unit tests
- `tests/integration/` -- integration tests
- `tests/benchmarks/` -- performance benchmarks (NOT tests/performance/)
- `tests/comprehensive/` -- comprehensive test suites
- `tests/api/` -- API tests
- `tests/helpers/` -- test utilities
## Release
- `npm run release:patch/minor/major` -- fully automated via `scripts/release.sh`
- `npm run release:dry` -- preview without changes
- Uses conventional commits for changelog generation

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# Git
.git
.gitignore
# Development
.vscode
.idea
*.swp
*.swo
.DS_Store
# Node
node_modules
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# Testing
tests
*.test.ts
*.test.js
coverage
.nyc_output
# Documentation (keep only essentials)
docs
*.md
!README.md
!LICENSE
# Build artifacts (will be built in Docker)
dist
build
*.tsbuildinfo
# Environment
.env
.env.*
# Strategy and private docs
.strategy
CLAUDE.md
# Development files
docker-compose.yml
Dockerfile
.dockerignore
# Data (should be mounted, not baked in)
data
*.db
*.sqlite
# Models (should be downloaded at runtime or mounted)
models
*.onnx
*.bin

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DATABASE_URL=postgres://localhost/test
API_KEY=sk-test-123456
SECRET_TOKEN=super-secret-value
NODE_ENV=production

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# These are supported funding model platforms
github: DPSIFR
patreon: # Replace with a single Patreon username
open_collective: # Replace with a single Open Collective username
ko_fi: # Replace with a single Ko-fi username
tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
liberapay: # Replace with a single Liberapay username
issuehunt: # Replace with a single IssueHunt username
lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
polar: # Replace with a single Polar username
buy_me_a_coffee: # Replace with a single Buy Me a Coffee username
thanks_dev: # Replace with a single thanks.dev username
custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

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---
name: Bug report
about: Create a report to help us improve
title: '[BUG] '
labels: bug
assignees: ''
---
## Bug Description
A clear and concise description of what the bug is.
## Reproduction Steps
Steps to reproduce the behavior:
1. Initialize BrainyData with '...'
2. Call method '....'
3. See error
## Expected Behavior
A clear and concise description of what you expected to happen.
## Environment
- Brainy version: [e.g. 0.9.4]
- Environment: [e.g. Browser, Node.js, serverless]
- Browser (if applicable): [e.g. Chrome, Safari]
- Node.js version (if applicable): [e.g. 23.11.0]
- Operating System: [e.g. Windows 10, macOS Monterey, Ubuntu 22.04]
## Additional Context
Add any other context about the problem here. If applicable, include code snippets, error messages, or screenshots.
## Possible Solution
If you have suggestions on how to fix the issue, please describe them here.

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---
name: Feature request
about: Suggest an idea for this project
title: '[FEATURE] '
labels: enhancement
assignees: ''
---
## Problem Statement
A clear and concise description of what problem this feature would solve. For example: "I'm always frustrated when [...]"
## Proposed Solution
A clear and concise description of what you want to happen.
## Alternative Solutions
A clear and concise description of any alternative solutions or features you've considered.
## Use Case
Describe a concrete use case that highlights the value of this feature.
## Additional Context
Add any other context, code examples, or references about the feature request here.

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## Description
Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.
Fixes # (issue)
## Type of change
Please delete options that are not relevant.
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] Documentation update
- [ ] Performance improvement
- [ ] Code refactoring (no functional changes)
## How Has This Been Tested?
Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.
## Checklist:
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream modules

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name: CI
on:
push:
pull_request:
jobs:
node:
name: Node ${{ matrix.node-version }}
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
node-version: ['22', '24']
steps:
- uses: actions/checkout@v4
- uses: actions/setup-node@v4
with:
node-version: ${{ matrix.node-version }}
cache: npm
- run: npm ci
- run: npm run test:unit
bun:
name: Bun (latest)
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/setup-node@v4
with:
node-version: '22'
cache: npm
- uses: oven-sh/setup-bun@v2
with:
bun-version: latest
- run: npm ci
# test:bun imports the built dist/, so build first.
- run: npm run build
# Bun as a runtime is the supported Bun story (`bun add` / `bun run`).
- run: npm run test:bun

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# Build output
/tmp
/out-tsc
/dist
/cloud-wrapper/dist
# Dependencies
/node_modules
/cloud-wrapper/node_modules
node_modules/
npm-debug.log*
yarn-debug.log*
yarn-error.log*
/.pnp
.pnp.js
# Package artifacts
*.tgz
*.tar.gz
# Build outputs
dist/
build/
*.tsbuildinfo
# Coverage directory
/coverage
# Environment files
# Environment variables
.env
.env.local
.env.development.local
.env.test.local
.env.production.local
# Runtime data
brainy-data/
.brainy/
*.log
*.pid
*.seed
*.pid.lock
# Coverage directory used by tools like istanbul
coverage/
*.lcov
# Test results
tests/results/
# Filesystem test artifacts (created by integration tests)
test-*/
# IDE files
.vscode/
.idea/
*.iml
*.iws
*.ipr
*.sublime-workspace
*.sublime-project
*.swp
*.swo
*~
# OS files
.DS_Store
Thumbs.db
# Data directories created by FileSystemStorage
/brainy-data
/custom-data
/clean-history.sh
/bluesky-augmentation/node_modules/
/bluesky-augmentation/dist/
# Temporary files
tmp/
temp/
*.tmp
# Test files
/test-worker.js
/test-node24-worker.js
/test-results.json
/tests/results/
/tests/results/*.json
# Planning and instruction files
plan.md
# Generated files
/encoded-image.html
/encoded-image.txt
/npm
/rollup
/soulcraft-brainy-*.tgz
/data/
# Package files
*.tgz
# Temporary test files created by AI agents
test*.js
test*.ts
temp-test*.js
temp-test*.ts
reproduction*.js
reproduction*.ts
debug*.js
debug*.ts
/temp/
/temp-tests/
/brainy-models-package/node_modules/
/test-consumer/node_modules/
/test-install/node_modules/
# Private/confidential files
PLAN.md
INTERNAL_NOTES.md
TODO_PRIVATE.md
*.tar.gz
# Downloaded models (temporary)
/models-download/
# Strategy and planning documents (private)
.strategy/
# Removed: PRODUCTION_*.md (now these should be public documentation)
DISTRIBUTED_*.md
*_ASSESSMENT.md
*_ANALYSIS.md
*_TRUTH*.md
# Sensitive files - NEVER commit
*.pdf
*pitch*deck*
*investor*deck*
*confidential*
*private*
CLAUDE.md
# Models (downloaded at runtime)
models/
models-cache/
# But include bundled WASM model assets
!assets/models/
# Development planning files (not for commit)
PLAN.md
# Backup folders
backup-*
backup/
# Internal documentation
docs/internal/
# Cache files
*.cache
# Rust/Cargo build artifacts
src/embeddings/candle-wasm/target/
src/embeddings/candle-wasm/Cargo.lock
# Ignore the wasm-pack output dir's CONTENTS (note the `/*`, not `/`, so the
# re-includes below can take effect — git cannot re-include a file whose parent
# DIRECTORY is excluded). Keep the pre-built WASM committed: it ships in the npm
# package anyway, it lets consumers + CI build without a Rust/wasm-pack toolchain,
# and versioning it makes the shipped artifact reproducible (not "whatever the
# maintainer last built").
src/embeddings/wasm/pkg/*
!src/embeddings/wasm/pkg/*.wasm
!src/embeddings/wasm/pkg/*.js
!src/embeddings/wasm/pkg/*.d.ts
# Log files (redundant but explicit)
*.log
# Temporary files (redundant but explicit)
*.tmp
/.junie/guidelines.md
# Claude Code harness state
.claude/scheduled_tasks.lock

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# Exclude source maps - multiple patterns for safety
*.map
**/*.map
dist/**/*.map
*.js.map
dist/**/*.js.map
# Development files
node_modules/
# Source files (not needed in package)
src/
tests/
examples/
.github/
.vscode/
.idea/
cloud-wrapper/
scripts/
dev/
coverage/
# Model files (downloaded on first use, not bundled)
models/
models-cache/
# Development and backup files
backup-*
backup-*/
docs/backup*/
# Documentation (except essentials)
*.md
!README.md
!LICENSE
!CHANGELOG.md
!MIGRATION.md
# Configuration files
.eslintrc
.prettierrc
tsconfig*.json
rollup.config.js
jest.config.js
.gitignore
.npmignore
tsconfig.json
vitest.config.ts
vitest.config.mts
*.config.js
*.config.ts
.eslintrc*
.prettierrc*
# Build artifacts
emocoverage/
.nyc_output/
# Test files
test-*.js
test-*.ts
*.test.ts
*.test.js
*.spec.ts
*.spec.js
# Framework bundles (not needed in npm package)
dist/framework.js
dist/framework.min.js
dist/framework.js.map
dist/framework.min.js.map
# Large files
# Include the logo but exclude other PNGs
!brainy.png
*.png
encoded-image.*
README.demo.md
scalingStrategy.md
# Misc
.DS_Store
# Temporary and log files
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
test-results.json
package-lock.json
*.tmp
tmp/
temp/
brainy-data/
# Additional large files to exclude
*.js
!dist/**/*.js
!bin/*.js
# Git and CI files
.git/
.github/
.gitlab-ci.yml
.travis.yml
# Documentation that's not needed for npm package
CHANGELOG.md
CORTEX*.md
METADATA_*.md
PERFORMANCE_*.md
IMPLEMENTATION-*.md
TENSORFLOW_*.md
MIGRATION_*.md
BRAIN_CLOUD_*.md
JARVIS_*.md
OFFLINE_*.md
CORTEX-ROADMAP.md
# IDE files
.vscode/
.idea/
*.swp
*.swo
# OS files
.DS_Store
Thumbs.db
# Private files
PLAN.md
CLAUDE.md
INTERNAL_NOTES.md
TODO_PRIVATE.md
*-ANALYSIS.md
*-PLAN.md
# Build artifacts not needed
*.tsbuildinfo
*.map
# Development environment
.env*
.nvm*
.node-version
# Keep dist/ for the compiled code
# Keep bin/ for the CLI
# Keep package.json, package-lock.json

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22

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{
"types": [
{"type": "feat", "section": "Added", "hidden": false},
{"type": "fix", "section": "Fixed", "hidden": false},
{"type": "chore", "section": "Changed", "hidden": false},
{"type": "docs", "section": "Documentation", "hidden": false},
{"type": "style", "section": "Changed", "hidden": true},
{"type": "refactor", "section": "Changed", "hidden": false},
{"type": "perf", "section": "Changed", "hidden": false},
{"type": "test", "section": "Tests", "hidden": true},
{"type": "build", "section": "Build System", "hidden": true},
{"type": "ci", "section": "Continuous Integration", "hidden": true}
],
"releaseCommitMessageFormat": "chore(release): {{currentTag}} [skip ci]",
"commitUrlFormat": "https://github.com/soulcraftlabs/brainy/commit/{{hash}}",
"compareUrlFormat": "https://github.com/soulcraftlabs/brainy/compare/{{previousTag}}...{{currentTag}}",
"issueUrlFormat": "https://github.com/soulcraftlabs/brainy/issues/{{id}}",
"userUrlFormat": "https://github.com/{{user}}",
"skip": {
"tag": false
}
}

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# 🧠 Brainy Augmentation Architecture - Complete Guide
## Overview
Brainy has a clear augmentation system with four tiers:
```
1. Built-in (Free, Always Included)
2. Community (Free, npm packages)
3. Premium (Brain Cloud subscription - auto-loads after auth)
4. Brain Cloud (Managed Service)
```
## 1. Built-in Augmentations (Always Free)
These come with every Brainy installation:
### Currently Implemented:
- **NeuralImport** - AI-powered data understanding
- **Basic Storage** - Filesystem/memory persistence
- **Vector Search** - Semantic similarity
- **Graph Traversal** - Relationship queries
### To Be Added (Still Built-in):
```javascript
// src/augmentations/built-in/
├── autoSave.ts // Automatic persistence
├── basicCache.ts // Query caching
├── simpleBackup.ts // Local backups
└── metadataIndex.ts // Facet indexing
```
## 2. Community Augmentations (Free, Open Source)
Published to npm by the community:
```bash
# Examples (to be created by community)
npm install brainy-sentiment # Sentiment analysis
npm install brainy-translator # Multi-language
npm install brainy-summarizer # Text summarization
npm install brainy-classifier # Text classification
```
Usage:
```javascript
import { SentimentAnalyzer } from 'brainy-sentiment'
const cortex = new Cortex()
cortex.register(new SentimentAnalyzer())
```
## 3. Premium Augmentations (Brain Cloud Auto-Loading)
The `/brain-cloud` project contains premium augmentations:
### Core Premium Features (AI Memory & Coordination):
```javascript
// After 'brainy cloud auth', these are automatically available:
// - AIMemory // Persistent AI memory across sessions
// - AgentCoordinator // Multi-agent handoffs
// - TeamSync // Real-time team synchronization
// - CloudBackup // Automatic cloud backups
// No imports needed - they auto-load based on your subscription!
const cortex = new Cortex()
// Premium augmentations are automatically registered
```
### Enterprise Connectors (Auto-Loading):
```javascript
// Enterprise augmentations auto-load for Team+ plans after auth:
// - NotionSync // Bidirectional Notion sync
// - SalesforceConnect // CRM integration
// - AirtableSync // Database sync
// - PostgresSync // Real-time replication
// - SlackMemory // Team knowledge base
// - AnalyticsSuite // Business intelligence
// Just configure with your credentials - no imports needed!
await brainy.connectNotion({
notionToken: process.env.NOTION_TOKEN
})
```
## 4. Brain Cloud Service (Managed)
The hosted service at brain-cloud.soulcraft.com:
```javascript
// Connect to managed service
await brain.connect('brain-cloud.soulcraft.com', {
instance: 'my-team',
apiKey: process.env.BRAIN_CLOUD_KEY
})
```
## CLI Commands Structure
### Core Commands (brainy)
```bash
# Database operations
brainy init # Initialize Brainy
brainy add "data" # Add data
brainy search "query" # Search
brainy chat # Interactive chat
# Augmentation management
brainy augment # List augmentations
brainy augment add # Add augmentation (interactive)
brainy augment remove # Remove augmentation
brainy augment config # Configure augmentation
# Brain Cloud connection
brainy cloud # Connect to Brain Cloud service
brainy cloud --status # Check connection status
brainy cloud --sync # Force sync
```
### Installing Augmentations via CLI
#### Built-in (always available):
```bash
brainy augment enable neural-import
brainy augment enable auto-save
```
#### Community (from npm):
```bash
# Install from npm first
npm install -g brainy-sentiment
# Then register with Brainy
brainy augment add brainy-sentiment --type sense
```
#### Premium (requires license):
```bash
# Set license key
export BRAINY_LICENSE_KEY=lic_xxxxx
# Install premium package
brainy cloud auth # Auto-configures based on your subscription
# Register augmentations
brainy augment add ai-memory --premium
brainy augment add notion-sync --premium
```
#### For Brain Cloud service:
```bash
# Connect to cloud (handles everything)
brainy cloud --connect YOUR_CUSTOMER_ID
```
## How Augmentations Work
### 1. Local Instance
```javascript
const brain = new BrainyData()
const cortex = new Cortex()
// Register augmentations
cortex.register(new NeuralImport(brain)) // Built-in
cortex.register(new SentimentAnalyzer()) // Community
cortex.register(new NotionSync({ key })) // Premium
await brain.init()
```
### 2. Remote Hosted Instance
```javascript
// Connect to remote Brainy
const brain = new BrainyData({
remote: 'https://my-brainy-server.com'
})
// Augmentations run on server
await brain.addAugmentation('sentiment-analyzer')
```
### 3. Brain Cloud Instance
```javascript
// Connect to Brain Cloud
const brain = new BrainyData({
cloud: true,
customerId: 'cust_xxx'
})
// All premium augmentations available
// Managed by Brain Cloud service
```
## Directory Structure
### /brainy (this project)
```
src/
├── augmentations/
│ ├── built-in/ # Free, always included
│ │ ├── neuralImport.ts
│ │ ├── autoSave.ts
│ │ └── basicCache.ts
│ └── cortexSense.ts # Legacy, being refactored
├── cortex.ts # Orchestrator
└── brainyData.ts # Core database
```
### /brain-cloud (premium project)
```
src/
├── augmentations/
│ ├── memory/ # AI Memory features
│ │ ├── aiMemory.ts
│ │ ├── agentCoordinator.ts
│ │ └── teamSync.ts
│ ├── enterprise/ # Enterprise connectors
│ │ ├── notionSync.ts
│ │ ├── salesforce.ts
│ │ └── airtable.ts
│ └── index.ts # Main exports
├── licensing/ # License validation
└── cloud-service/ # Brain Cloud API
```
## Migration Plan
### Phase 1: Update References
- [x] Replace all `brainy-quantum-vault` → Brain Cloud managed service
- [ ] Update documentation
- [ ] Update CLI commands
### Phase 2: Restructure brain-cloud
- [ ] Organize enterprise connectors in brain-cloud managed service
- [ ] Add AI memory augmentations
- [ ] Implement license validation
### Phase 3: CLI Enhancement
- [ ] Add `brainy augment` commands
- [ ] Interactive augmentation installer
- [ ] Auto-detect available augmentations
### Phase 4: Documentation
- [ ] Update README with clear tiers
- [ ] Create augmentation development guide
- [ ] Website update instructions
## License Model
```
Built-in: MIT License (Free forever)
Community: Varies (usually MIT)
Premium: Commercial License ($49-299/mo)
Cloud: Subscription ($19-99/mo)
```
## The Promise
1. **Built-in augmentations are ALWAYS free**
2. **No feature moves from free to paid**
3. **Community contributions welcome**
4. **Premium funds open source development**
5. **Brain Cloud is optional, not required**

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# Brainy - Claude Code Project Guide
This file provides guidance for Claude Code (and human contributors) when working on the Brainy codebase.
## Cross-Project Coordination
Handoff file: `/home/dpsifr/.strategy/PLATFORM-HANDOFF.md`
**At session START:** Read the handoff. Find rows where Owner = Brainy. Act on those first.
**At session END:** Mark completed actions ✅, delete rows you finished, delete threads with zero remaining actions. File must not grow. **If you shipped anything consumers need to know about, update `RELEASES.md` before closing.**
**Brainy's current open actions:** None. MIT open-source — no platform-specific actions.
**Current version:** `@soulcraft/brainy@7.31.5` (latest published; 8.0.0 release candidate on `feat/8.0-u64-ids`)
---
## Project Overview
Brainy is a Universal Knowledge Protocol -- a Triple Intelligence database that combines vector similarity search, graph traversal, and metadata filtering into a single TypeScript library. Published as `@soulcraft/brainy` on npm under the MIT license.
## Getting Started
```bash
npm install # Install dependencies
npm run build # Build the project
npm test # Run test suite (Vitest)
```
## Architecture
Full architecture reference: `.claude/skills/architecture.md`
### Core Systems
- **Storage** (`src/storage/`): Pluggable storage backends via StorageAdapter interface (`src/coreTypes.ts`)
- **Vector Search** (`src/hnsw/`): HNSW approximate nearest neighbor search
- **Graph Engine** (`src/graph/`): Relationship traversal with adjacency index and pathfinding
- **Metadata Index** (`src/utils/metadataIndex.ts`): O(1) exact match, O(log n) range queries
- **Triple Intelligence** (`src/triple/`): Unified query combining all three intelligence types
- **Aggregation Engine** (`src/aggregation/`): Write-time incremental SUM/COUNT/AVG/MIN/MAX with GROUP BY and time windows
- **Virtual Filesystem** (`src/vfs/`): Full VFS with semantic search
### Type System
- **NounType** (42 types): Entity classification -- Person, Concept, Collection, Document, Task, etc.
- **VerbType** (127 types): Relationship types -- Contains, RelatedTo, PartOf, Creates, DependsOn, etc.
- Defined in `src/types/graphTypes.ts`
## Code Standards
### TypeScript
- Strict mode enabled
- Target: ES2020, NodeNext module resolution
- All new code must be TypeScript
- Follow existing patterns -- read related code before writing
### Quality
- All code must compile without errors
- All code must have working tests that exercise real behavior
- No stub returns (`return {} as any`)
- No incomplete implementations with TODO comments
- If something can't be fully implemented, throw an explicit error rather than faking it
### Verification Before Code Changes
1. Check that interfaces and methods actually exist before using them
2. Check that type properties are in the type definitions
3. Run `npm test` -- tests must pass
4. Run `npm run build` -- build must succeed
### Testing
- Framework: Vitest
- Tests in `tests/` (unit, integration, benchmarks, comprehensive)
- Use in-memory storage for speed where possible
- Tests must exercise real behavior, not mock it
- Benchmarks are in `tests/benchmarks/` (not tests/performance/)
## Commit Conventions
Use [Conventional Commits](https://www.conventionalcommits.org/):
```
feat: add new feature (minor version bump)
fix: resolve bug (patch version bump)
docs: update documentation (patch version bump)
perf: improve performance (patch version bump)
refactor: restructure code (patch version bump)
test: add/update tests (patch version bump)
```
**Important:** Never use `BREAKING CHANGE` in commit messages. Major version bumps are manual decisions only (`npm run release:major`).
## Docs Pipeline — soulcraft.com/docs
Docs in `docs/**/*.md` are published with the npm package (included in `files`) and synced to soulcraft.com/docs on every portal deploy. Frontmatter controls what appears publicly.
### Docs check triggers
Run the docs check whenever the user says ANY of:
- "commit, publish, release" / "release" / "publish"
- "update the docs" / "make sure docs are accurate" / "check the docs"
- "review docs" / "clean up docs"
### Pre-release docs check (MANDATORY before every release)
When the user says "commit, publish, release" or any variation, **before committing**:
1. **Scan all files changed in this session** (and any recently added `docs/*.md` files)
2. For each changed/new doc, decide: is this useful to external users?
- **Yes** → ensure it has complete frontmatter (add or update it)
- **No** (internal, migration, dev-only) → ensure it has no frontmatter or `public: false`
3. For docs that already have frontmatter, verify:
- `description` still matches the actual content
- `next` links still exist and are still the right follow-up pages
- `title` matches the doc's h1
4. Include frontmatter changes in the commit
### Frontmatter format
```yaml
---
title: Human-readable title
slug: category/page-name # URL: soulcraft.com/docs/category/page-name
public: true # false or absent = not published
category: getting-started | concepts | guides | api
template: guide | concept | api # controls layout on soulcraft.com
order: 1 # sidebar position within category (lower = first)
description: One sentence. What this doc covers and why it matters.
next: # "Next steps" links shown at bottom of page
- category/other-slug
---
```
### Category guide
| category | use for |
|----------|---------|
| `getting-started` | installation, quick start, first steps |
| `concepts` | how the system works, mental models |
| `guides` | how to do specific things, recipes |
| `api` | method reference, signatures, parameters |
### What stays internal (no frontmatter / `public: false`)
- Release guides, developer learning paths
- Migration guides for old versions (v3→v4, v5.11)
- Architecture analysis docs (clustering algorithms, etc.)
- Anything in `docs/internal/`
- Deployment/ops/cost docs (cloud-run, kubernetes, cost-optimization)
## Release Process
Fully automated via `scripts/release.sh`:
```bash
npm run release:dry # Preview (no changes)
npm run release:patch # Bug fixes
npm run release:minor # New features
npm run release:major # Breaking changes (rare, manual decision)
```
The script: verifies clean git state, builds, tests, bumps version, updates CHANGELOG.md, commits, tags, pushes, publishes to npm, and creates a GitHub release.
After a successful release, remind the user:
> "Published. Deploy portal to pick up the new docs → go to the portal project and deploy."
Do NOT deploy portal from here. Portal is always deployed separately from within the portal project.
## Closed-Source Product Names — HARD RULE
Brainy is the only Soulcraft open-source project. Nothing in this repo — code, JSDoc, tests,
docs, RELEASES.md, CHANGELOG.md, commit messages — may reference closed-source Soulcraft
products by name (Workshop, Venue, Memory, Muse, Hall, Forge, Academy, Pulse, Heart,
Collective, SDK) or by their specific class/method names (`BookingDraftService`,
`getDemandHeatmap`, `systemKind`, etc.).
When recording a consumer-reported bug, regression scenario, or release note:
- Refer to "a consumer", "a downstream application", "a production deployment", or "an
internal report" — never name the product.
- All doc examples must use generic domain values (`'employee'`, `'customer'`, `'invoice'`,
`'milestone'`, `OrderService`, `/orders/...`), not product-specific schemas.
- Internal session artifacts (`.strategy/`, `~/.claude/plans/`, handoff files outside the
repo) MAY name products — those are not public.
If you catch yourself typing a product name into a tracked file, stop and rephrase.
## Performance Claims
When documenting performance characteristics:
- **MEASURED**: Cite the test file and line number
- **PROJECTED**: Clearly label as extrapolated from tested scale
- Never claim a performance figure without context or evidence
## Debugging
When a bug persists through 2+ fix attempts, switch to systematic debugging:
1. Add comprehensive logging at every step
2. Test with production-like data
3. Trace the complete execution path
4. Check both library code and consumer code
5. Verify with actual test execution before declaring fixed
## Key Paths
- Main class: `src/brainy.ts`
- Public API: `src/index.ts` (38+ exports)
- Storage interface: `src/coreTypes.ts`
- Type definitions: `src/types/`
- Strategy/planning docs: `.strategy/` (gitignored, not public)

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# 🧠 Brainy CLI - Augmentation Management Guide
## Complete CLI Commands for Augmentations
### Core Commands
```bash
# Initialize Brainy
brainy init
# Basic operations
brainy add "data" # Add data
brainy search "query" # Search
brainy chat # Interactive chat
```
### Augmentation Management
```bash
# List all augmentations
brainy augment # Shows installed & available
brainy augment list # Same as above
brainy augment available # Shows what can be installed
# Add augmentations
brainy augment add # Interactive mode
brainy augment add neural-import # Built-in
brainy augment add brainy-sentiment # Community (from npm)
brainy augment add ai-memory # Brain Cloud feature (optional)
# Remove augmentations
brainy augment remove sentiment-analyzer
brainy augment disable neural-import # Disable but keep installed
# Configure augmentations
brainy augment config neural-import
brainy augment config notion-sync --set apiKey=xxx
```
### Installing Different Types
#### 1. Built-in Augmentations (Free, Always Available)
```bash
# These are included - just enable them
brainy augment enable neural-import
brainy augment enable auto-save
brainy augment enable basic-cache
```
#### 2. Community Augmentations (Free, From npm)
```bash
# Step 1: Install from npm
npm install -g brainy-sentiment
# Step 2: Register with Brainy
brainy augment add brainy-sentiment
# Or in one command (coming soon)
brainy augment install brainy-sentiment # Auto-installs from npm
```
#### 3. Premium Augmentations (Paid, From @soulcraft/brain-cloud)
```bash
# Step 1: Set license key
export BRAINY_LICENSE_KEY=lic_xxxxxxxxxxxxx
# Step 2: Install premium package
npm install -g @soulcraft/brain-cloud
# Step 3: Add specific augmentations
brainy augment add ai-memory --premium
brainy augment add agent-coordinator --premium
brainy augment add notion-sync --premium
# Or add all premium at once
brainy augment add-premium --all
```
#### 4. Brain Cloud Service (Managed, Everything Included)
```bash
# Connect to Brain Cloud (includes all augmentations)
brainy cloud --connect YOUR_CUSTOMER_ID
# Check status
brainy cloud --status
# Force sync
brainy cloud --sync
# Open dashboard
brainy cloud --dashboard
```
### Working with Different Instances
#### Local Instance
```bash
# Add augmentation to local Brainy
cd my-project
brainy init
brainy augment add neural-import
```
#### Remote Hosted Instance
```bash
# Connect to remote Brainy server
brainy config set server.url https://my-brainy-server.com
brainy config set server.apiKey xxx
# Add augmentation to remote
brainy augment add sentiment-analyzer --remote
```
#### Brain Cloud Instance
```bash
# Everything is managed
brainy cloud --connect CUSTOMER_ID
# All augmentations automatically available
```
### Interactive Mode Examples
#### Adding an Augmentation (No Arguments)
```bash
$ brainy augment add
? What type of augmentation?
Built-in (Free)
Community (npm)
Premium (Licensed)
? Select augmentation
✓ neural-import (AI understanding)
○ sentiment-analyzer (Emotion detection)
○ translator (Multi-language)
? Configure now? (Y/n)
```
#### Configuring an Augmentation
```bash
$ brainy augment config notion-sync
? Notion API Token secret_xxxxx
? Sync Mode
○ Read only
● Bidirectional
○ Write only
? Sync Interval (minutes) 5
✅ Configuration saved!
```
### CLI Implementation in brainy.js
```javascript
// brainy augment command structure
program
.command('augment [action] [name]')
.description('Manage brain augmentations')
.option('--type <type>', 'Augmentation type (sense|conduit|memory|etc)')
.option('--premium', 'Premium augmentation')
.option('--remote', 'Install on remote server')
.action(async (action, name, options) => {
if (!action) {
// List all augmentations
await listAugmentations()
} else {
switch(action) {
case 'add':
case 'install':
await installAugmentation(name, options)
break
case 'remove':
await removeAugmentation(name)
break
case 'config':
await configureAugmentation(name, options)
break
case 'list':
await listAugmentations()
break
case 'enable':
await enableAugmentation(name)
break
case 'disable':
await disableAugmentation(name)
break
}
}
})
```
### Environment Variables
```bash
# For premium augmentations
export BRAINY_LICENSE_KEY=lic_xxxxxxxxxxxxx
# For Brain Cloud
export BRAIN_CLOUD_KEY=bc_xxxxxxxxxxxxx
export BRAIN_CLOUD_CUSTOMER_ID=cust_xxxxx
# For remote server
export BRAINY_SERVER_URL=https://my-server.com
export BRAINY_SERVER_KEY=xxx
```
### Package.json Scripts
Add these to your project's package.json:
```json
{
"scripts": {
"brain:init": "brainy init",
"brain:augment": "brainy augment",
"brain:add-sentiment": "brainy augment add brainy-sentiment",
"brain:add-premium": "brainy augment add ai-memory --premium",
"brain:cloud": "brainy cloud --connect"
}
}
```
### Error Messages & Solutions
```bash
# Missing license key
❌ Premium augmentation requires license key
💡 Set BRAINY_LICENSE_KEY or visit soulcraft.com
# Augmentation not found
❌ Augmentation 'xyz' not found
💡 Try: npm install brainy-xyz first
# Remote connection failed
❌ Cannot connect to remote server
💡 Check BRAINY_SERVER_URL and network connection
# Incompatible version
❌ Augmentation requires Brainy v0.62+
💡 Update: npm update @soulcraft/brainy
```
## Summary
The CLI provides a unified interface for managing all augmentation types:
- **Built-in**: Always available, just enable
- **Community**: Install from npm, then add
- **Premium**: Need license, install from @soulcraft/brain-cloud
- **Brain Cloud**: Everything managed, just connect
The key is making it simple for beginners (interactive mode) while powerful for experts (direct commands).

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# Contributor Covenant Code of Conduct
## Our Pledge
We as members, contributors, and leaders pledge to make participation in our
community a harassment-free experience for everyone, regardless of age, body
size, visible or invisible disability, ethnicity, sex characteristics, gender
identity and expression, level of experience, education, socio-economic status,
nationality, personal appearance, race, religion, or sexual identity
and orientation.
We pledge to act and interact in ways that contribute to an open, welcoming,
diverse, inclusive, and healthy community.
## Our Standards
Examples of behavior that contributes to a positive environment for our
community include:
* Demonstrating empathy and kindness toward other people
* Being respectful of differing opinions, viewpoints, and experiences
* Giving and gracefully accepting constructive feedback
* Accepting responsibility and apologizing to those affected by our mistakes,
and learning from the experience
* Focusing on what is best not just for us as individuals, but for the
overall community
Examples of unacceptable behavior include:
* The use of sexualized language or imagery, and sexual attention or
advances of any kind
* Trolling, insulting or derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or email
address, without their explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Enforcement Responsibilities
Project maintainers are responsible for clarifying and enforcing our standards of
acceptable behavior and will take appropriate and fair corrective action in
response to any behavior that they deem inappropriate, threatening, offensive,
or harmful.
Project maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned with this Code of Conduct, and will communicate reasons for moderation
decisions when appropriate.
## Scope
This Code of Conduct applies within all community spaces, and also applies when
an individual is officially representing the community in public spaces.
Examples of representing our community include using an official e-mail address,
posting via an official social media account, or acting as an appointed
representative at an online or offline event.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported to the project maintainers responsible for enforcement at
conduct@soulcraft.com.
All complaints will be reviewed and investigated promptly and fairly.
All project maintainers are obligated to respect the privacy and security of the
reporter of any incident.
## Enforcement Guidelines
Project maintainers will follow these Community Impact Guidelines in determining
the consequences for any action they deem in violation of this Code of Conduct:
### 1. Correction
**Community Impact**: Use of inappropriate language or other behavior deemed
unprofessional or unwelcome in the community.
**Consequence**: A private, written warning from project maintainers, providing
clarity around the nature of the violation and an explanation of why the
behavior was inappropriate. A public apology may be requested.
### 2. Warning
**Community Impact**: A violation through a single incident or series
of actions.
**Consequence**: A warning with consequences for continued behavior. No
interaction with the people involved, including unsolicited interaction with
those enforcing the Code of Conduct, for a specified period of time. This
includes avoiding interactions in community spaces as well as external channels
like social media. Violating these terms may lead to a temporary or
permanent ban.
### 3. Temporary Ban
**Community Impact**: A serious violation of community standards, including
sustained inappropriate behavior.
**Consequence**: A temporary ban from any sort of interaction or public
communication with the community for a specified period of time. No public or
private interaction with the people involved, including unsolicited interaction
with those enforcing the Code of Conduct, is allowed during this period.
Violating these terms may lead to a permanent ban.
### 4. Permanent Ban
**Community Impact**: Demonstrating a pattern of violation of community
standards, including sustained inappropriate behavior, harassment of an
individual, or aggression toward or disparagement of classes of individuals.
**Consequence**: A permanent ban from any sort of public interaction within
the community.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage],
version 2.0, available at
https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
Community Impact Guidelines were inspired by [Mozilla's code of conduct
enforcement ladder](https://github.com/mozilla/diversity).
[homepage]: https://www.contributor-covenant.org
For answers to common questions about this code of conduct, see the FAQ at
https://www.contributor-covenant.org/faq. Translations are available at
https://www.contributor-covenant.org/translations.

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# 🚫 No Configuration Required
Brainy follows a **zero-configuration philosophy**. We automatically detect and adapt to your environment.
## How It Works
### 🔐 API Keys & Secrets
**Never put keys in files!** Brainy automatically detects credentials from:
1. **System Keychains** - macOS Keychain, Windows Credential Manager, Linux Secret Service
2. **Cloud IAM** - AWS IAM roles, Google Cloud Service Accounts, Azure Managed Identity
3. **Secure Prompts** - Asked once, stored securely (never in plaintext)
```javascript
// Just use brainy - it will find credentials securely
const brain = new BrainyVectorDB()
await brain.connect() // Auto-detects everything
```
### 🌍 Environment Detection
Brainy automatically detects:
- Browser vs Node.js vs Serverless
- Available memory and CPU cores
- Storage backends (filesystem, S3, browser storage)
- Network endpoints and services
### 🎯 Smart Defaults
Based on your environment, Brainy automatically configures:
- Memory limits (50% of available)
- Cache sizes (adaptive to usage)
- Batch sizes (based on latency)
- Compression (when beneficial)
## When You DO Need Configuration
For advanced use cases only:
### Secure Credential Storage
```bash
# macOS
security add-generic-password -s brainy-api -a user -w YOUR_KEY
# Linux
secret-tool store --label="Brainy API" service brainy-api
# Windows
cmdkey /generic:brainy-api /user:user /pass:YOUR_KEY
```
### Programmatic Override
```javascript
const brain = new BrainyVectorDB({
// Only override if you know better than auto-detection
storage: 's3://my-bucket',
memory: '2GB'
})
```
## Philosophy
> "The best configuration is no configuration. Software should be smart enough to figure out what you need."
Brainy detects, adapts, and optimizes automatically. If you find yourself needing configuration, we've failed - please open an issue!
## Security Without .env
Traditional `.env` files are security theater:
- ❌ Get committed accidentally
- ❌ Sit in plaintext on disk
- ❌ Copied around carelessly
- ❌ Different for every environment
Brainy's approach:
- ✅ Never store secrets in files
- ✅ Use OS-level secure storage
- ✅ Detect cloud IAM automatically
- ✅ Adapt to environment dynamically
## Examples
### Local Development
```javascript
const brain = new BrainyVectorDB()
// Detects: Node.js, 16GB RAM, filesystem storage
// Auto-configures: 8GB memory limit, disk-backed cache
```
### Browser
```javascript
const brain = new BrainyVectorDB()
// Detects: Browser, 4GB available, IndexedDB
// Auto-configures: 2GB limit, OPFS storage, WebWorker processing
```
### AWS Lambda
```javascript
const brain = new BrainyVectorDB()
// Detects: Lambda, 3GB RAM, S3 access
// Auto-configures: 2.5GB limit, S3 storage, credential from IAM role
```
### Cloudflare Worker
```javascript
const brain = new BrainyVectorDB()
// Detects: Worker, 128MB limit, KV available
// Auto-configures: 100MB limit, KV storage, edge caching
```
## No Configuration Needed
Just use Brainy. It figures out the rest.

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<div align="center">
<img src="./brainy.png" alt="Brainy Logo" width="200"/>
# Contributing to Brainy
</div>
Thank you for your interest in contributing to Brainy! This document provides guidelines and instructions for contributing to the project.
Thank you for your interest in contributing to Brainy! This document provides guidelines and instructions for
contributing to the project.
## Code of Conduct
We welcome contributions of all kinds, including bug fixes, feature additions, documentation improvements, and more.
By participating in this project, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md).
By participating in this project, you agree to abide by our Code of Conduct:
- Be respectful and inclusive
- Welcome newcomers and help them get started
- Focus on constructive criticism
- Respect differing viewpoints and experiences
## Commit Message Guidelines
## How to Contribute
When contributing to this project, please write clear and descriptive commit messages that explain the purpose of your
changes. Good commit messages help maintainers understand your contributions and make the review process smoother.
### Reporting Issues
### Best Practices
Before creating an issue, please check existing issues to avoid duplicates.
- Keep the first line concise (ideally under 50 characters)
- Use the imperative mood ("Add feature" not "Added feature")
- Reference issues and pull requests where appropriate
- When necessary, provide more detailed explanations in the commit body
When creating an issue, include:
- Clear, descriptive title
- Detailed description of the problem
- Steps to reproduce
- Expected vs actual behavior
- System information (OS, Node version, Brainy version)
- Code examples if applicable
### Suggesting Features
Feature requests are welcome! Please provide:
- Clear use case
- Proposed API/interface
- Examples of how it would work
- Any potential challenges or considerations
### Pull Requests
#### Before Starting
1. Check existing issues and PRs
2. Open an issue to discuss significant changes
3. Fork the repository
4. Create a feature branch from `main`
#### Development Setup
**Quick Setup (Recommended):**
```bash
# Clone your fork
git clone https://github.com/your-username/brainy.git
cd brainy
# Run setup script (installs all dependencies including Rust)
./scripts/setup-dev.sh
```
**Manual Setup:**
```bash
# Clone your fork
git clone https://github.com/your-username/brainy.git
cd brainy
# Install system dependencies (Ubuntu/Debian)
sudo apt-get install -y build-essential pkg-config libssl-dev
# Install Rust (for WASM embedding engine)
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env
rustup target add wasm32-unknown-unknown
cargo install wasm-pack
# Install Node.js dependencies
npm install
# Build Candle WASM embedding engine
npm run build:candle
# Build TypeScript
npm run build
# Run tests
npm test
```
#### Making Changes
1. **Follow the code style**
- TypeScript for all source code
- Clear variable and function names
- Comments for complex logic
- JSDoc for public APIs
2. **Write tests**
- Add tests for new features
- Update tests for changes
- Ensure all tests pass
3. **Update documentation**
- Update README if needed
- Add/update API documentation
- Include examples
#### Commit Guidelines
Follow conventional commits format:
```
type(scope): description
[optional body]
[optional footer]
```
Types:
- `feat`: New feature
- `fix`: Bug fix
- `docs`: Documentation changes
- `style`: Code style changes
- `refactor`: Code refactoring
- `perf`: Performance improvements
- `test`: Test changes
- `chore`: Build/tooling changes
Examples:
```bash
feat(triple): add graph traversal depth limit
fix(storage): handle concurrent write conflicts
docs(api): update search method documentation
```
#### Submitting PR
1. Push to your fork
2. Create PR against `main` branch
3. Fill out PR template
4. Ensure CI checks pass
5. Wait for review
### Testing
#### Running Tests
```bash
# Run all tests
npm test
# Run specific test file
npm test tests/core.test.ts
# Run with coverage
npm run test:coverage
# Watch mode
npm run test:watch
```
#### Writing Tests
```typescript
import { describe, it, expect } from 'vitest'
import { Brainy } from '../src'
describe('Feature Name', () => {
it('should do something specific', async () => {
const brain = new Brainy()
await brain.init()
// Test implementation
const result = await brain.search("test")
expect(result).toBeDefined()
expect(result.length).toBeGreaterThan(0)
})
})
```
## Architecture Guidelines
### Adding New Features
1. **Check existing functionality**
- Review `ARCHITECTURE.md`
- Check if similar features exist
- Consider if it should be an augmentation
2. **Design considerations**
- Maintain backward compatibility
- Consider performance impact
- Think about all storage adapters
- Plan for extensibility
3. **Implementation checklist**
- [ ] Core functionality
- [ ] Tests (unit and integration)
- [ ] Documentation
- [ ] TypeScript types
- [ ] Examples
- [ ] Performance benchmarks (if applicable)
### Creating Augmentations
Augmentations extend Brainy's functionality:
```typescript
import { BrainyAugmentation } from '../types'
export class MyAugmentation extends BrainyAugmentation {
name = 'MyAugmentation'
async onInit(brain: Brainy): Promise<void> {
// Initialize augmentation
}
async onAdd(item: any, brain: Brainy): Promise<any> {
// Process before adding
return item
}
async onSearch(query: any, results: any[], brain: Brainy): Promise<any[]> {
// Process search results
return results
}
}
```
### Performance Considerations
- Use batch operations where possible
- Implement caching strategically
- Consider memory usage
- Profile performance impacts
- Add benchmarks for critical paths
## Documentation
### API Documentation
Use JSDoc for all public APIs:
```typescript
/**
* Searches for similar items using vector similarity
* @param query - Search query (text or vector)
* @param options - Search options
* @returns Array of search results with scores
* @example
* ```typescript
* const results = await brain.search("machine learning", { limit: 10 })
* ```
*/
async search(query: string | Vector, options?: SearchOptions): Promise<SearchResult[]> {
// Implementation
}
```
### Examples
```
Add vector normalization option
Fix distance calculation in HNSW search
Update API documentation
Add support for IndexedDB storage
Change API parameter order
Simplify vector comparison logic
Update build dependencies
Add examples for new features:
```typescript
// examples/feature-name.ts
import { Brainy } from 'brainy'
async function exampleUsage() {
const brain = new Brainy()
await brain.init()
// Show feature usage
// Include comments explaining what's happening
// Handle errors appropriately
}
exampleUsage().catch(console.error)
```
## Pull Request Process
## Release Process
1. Ensure your code follows the project's coding standards
2. Update the documentation if necessary
3. Use conventional commit messages in your PR
4. Your PR will be reviewed by maintainers and merged if approved
1. **Version bump**: Follow semantic versioning
2. **Update CHANGELOG**: Document all changes
3. **Run tests**: Ensure all tests pass
4. **Build**: Generate distribution files
5. **Tag**: Create git tag for version
6. **Publish**: Release to npm
## Development Setup
## Getting Help
1. Fork and clone the repository
2. Install dependencies: `npm install`
3. Build the project: `npm run build`
- **Discord**: Join our community
- **Issues**: Ask questions on GitHub
- **Discussions**: Share ideas and get feedback
## Code Style
## Recognition
This project uses ESLint and Prettier for code formatting and style checking. The configuration can be found in the `package.json` file. Please ensure your code follows these standards:
Contributors will be recognized in:
- CHANGELOG.md for their contributions
- README.md contributors section
- GitHub contributors page
- Use 2 spaces for indentation
- Use single quotes for strings
- No semicolons
- Trailing commas are not used
- Maximum line length is 80 characters
You can check your code style by running:
```bash
npm run check:style
```
This will run all code style checks, including a specific check for semicolons.
You can also run individual checks:
```bash
npm run lint # Run ESLint to check for code issues
npm run lint:fix # Automatically fix linting issues
npm run format # Format your code with Prettier
npm run check-format # Check if your code is properly formatted
```
## Branching Strategy
- `main` - The main branch contains the latest stable release
- `develop` - The development branch contains the latest development changes
- Feature branches - Create a branch from `develop` for your feature or fix
When working on a new feature or fix:
1. Create a new branch from `develop` with a descriptive name (e.g., `feature/add-vector-normalization` or `fix/distance-calculation`)
2. Make your changes in that branch
3. Submit a pull request to merge your branch into `develop`
## Issue Reporting
Before submitting a new issue, please search existing issues to avoid duplicates.
- For bugs, use the bug report template
- For feature requests, use the feature request template
- Be as detailed as possible in your description
- Include code examples, error messages, and screenshots if applicable
Thank you for contributing to Brainy!
Thank you for contributing to Brainy! 🧠

72
Dockerfile Normal file
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@ -0,0 +1,72 @@
# Multi-stage Dockerfile for Brainy
# Optimized for production deployment with minimal image size
# Stage 1: Build stage
FROM node:22-alpine AS builder
# Install build dependencies
RUN apk add --no-cache python3 make g++
# Set working directory
WORKDIR /app
# Copy package files
COPY package*.json ./
# Install all dependencies (including dev dependencies for building)
RUN npm ci
# Copy source code
COPY . .
# Build the TypeScript code
RUN npm run build
# Remove dev dependencies and only keep production ones
RUN npm prune --production
# Stage 2: Production stage
FROM node:22-alpine
# Install production dependencies only
RUN apk add --no-cache tini
# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && \
adduser -S nodejs -u 1001
# Set working directory
WORKDIR /app
# Copy package files
COPY package*.json ./
# Copy built application from builder stage
COPY --from=builder --chown=nodejs:nodejs /app/node_modules ./node_modules
COPY --from=builder --chown=nodejs:nodejs /app/dist ./dist
# Copy necessary static files
COPY --chown=nodejs:nodejs README.md LICENSE ./
# Create data directory for file-based storage
RUN mkdir -p /app/data && chown -R nodejs:nodejs /app/data
# Switch to non-root user
USER nodejs
# Expose default port (can be overridden)
EXPOSE 3000
# Set environment variables for production
ENV NODE_ENV=production
ENV BRAINY_STORAGE_PATH=/app/data
# Health check endpoint
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
CMD node -e "require('http').get('http://localhost:3000/health', (r) => r.statusCode === 200 ? process.exit(0) : process.exit(1))"
# Use tini to handle signals properly
ENTRYPOINT ["/sbin/tini", "--"]
# Default command (can be overridden)
CMD ["node", "dist/index.js"]

View file

@ -1,6 +1,6 @@
MIT License
Copyright (c) 2023 Soulcraft Research
Copyright (c) 2024 Brainy Data Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
@ -18,4 +18,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
SOFTWARE.

View file

@ -1,276 +0,0 @@
# Metadata Filtering Performance Optimization Proposal
## Problem Statement
Current metadata filtering has a **379-386% performance overhead** due to a fixed 3x ef multiplier in HNSW search, regardless of filter selectivity. This makes filtered searches 3-4x slower than necessary.
## Proposed Solution: Smart Filtering Strategy
### 1. Dynamic ef Multiplier Based on Selectivity
**Implementation Location**: `/src/brainyData.ts` in search method around line 2164
**Current Code**:
```typescript
// Fixed 3x multiplier regardless of filter selectivity
const ef = filter ? Math.max(this.config.efSearch * 3, k * 3) : Math.max(this.config.efSearch, k)
```
**Proposed Enhancement**:
```typescript
interface FilterSelectivity {
candidateCount: number
totalCount: number
selectivity: number // 0.0 - 1.0
strategy: 'index-first' | 'hnsw-filter' | 'post-filter'
}
async calculateFilterStrategy(filter: MetadataFilter): Promise<FilterSelectivity> {
const totalCount = this.index.getSize()
if (!this.metadataIndex || totalCount === 0) {
return { candidateCount: totalCount, totalCount, selectivity: 1.0, strategy: 'post-filter' }
}
const candidateIds = await this.metadataIndex.getIdsForCriteria(filter)
const selectivity = candidateIds.length / totalCount
let strategy: FilterSelectivity['strategy']
if (selectivity <= 0.05) {
strategy = 'index-first' // < 5% match: search only candidates
} else if (selectivity <= 0.3) {
strategy = 'hnsw-filter' // 5-30% match: HNSW with smart ef
} else {
strategy = 'post-filter' // > 30% match: search all, filter after
}
return { candidateCount: candidateIds.length, totalCount, selectivity, strategy }
}
// Dynamic ef calculation
calculateSmartEf(baseEf: number, k: number, selectivity: number, strategy: string): number {
switch (strategy) {
case 'index-first':
return Math.max(k * 1.2, 20) // Minimal ef for candidate-only search
case 'hnsw-filter':
// Dynamic multiplier: high selectivity = lower multiplier
const multiplier = 1.2 + (selectivity * 1.8) // 1.2x - 3.0x range
return Math.max(baseEf * multiplier, k * multiplier)
case 'post-filter':
return Math.max(baseEf, k) // No filtering overhead
default:
return Math.max(baseEf, k)
}
}
```
### 2. Index-First Search Implementation
**New Method**: Add to `/src/hnsw/hnswIndex.ts`
```typescript
/**
* Search only within a pre-filtered set of candidates
* Optimized for high-selectivity metadata filters
*/
async searchCandidatesOnly(
queryVector: Vector,
candidateIds: string[],
k: number
): Promise<SearchResult<HNSWNoun>[]> {
if (candidateIds.length === 0) return []
const candidates: { noun: HNSWNoun; distance: number }[] = []
// Calculate distances only for candidate nouns
for (const id of candidateIds) {
const noun = this.nouns.get(id)
if (noun) {
const distance = this.distanceFunction(queryVector, noun.vector)
candidates.push({ noun, distance })
}
}
// Sort by distance and return top k
candidates.sort((a, b) => a.distance - b.distance)
return candidates.slice(0, k).map(({ noun, distance }) => ({
id: noun.id,
score: 1 / (1 + distance),
vector: noun.vector,
metadata: noun.metadata
}))
}
```
### 3. Smart Search Strategy Selection
**Enhanced Search Flow** in `/src/brainyData.ts`:
```typescript
async search<T>(query: string, k: number, options?: SearchOptions<T>) {
// ... existing code for embedding generation ...
if (hasMetadataFilter && this.metadataIndex) {
// Calculate optimal strategy
const filterStrategy = await this.calculateFilterStrategy(options.metadata)
console.log(`Filter strategy: ${filterStrategy.strategy} (${(filterStrategy.selectivity * 100).toFixed(1)}% selectivity)`)
switch (filterStrategy.strategy) {
case 'index-first':
// Direct candidate search - fastest for high selectivity
const candidateIds = await this.metadataIndex.getIdsForCriteria(options.metadata)
return this.index.searchCandidatesOnly(queryVector, candidateIds, k)
case 'hnsw-filter':
// Smart HNSW search with optimized ef
const smartEf = this.calculateSmartEf(
this.config.hnsw?.efSearch || 50,
k,
filterStrategy.selectivity,
filterStrategy.strategy
)
return this.index.search(queryVector, k, undefined, smartEf)
case 'post-filter':
// Search all, then filter (best for low selectivity)
const allResults = await this.index.search(queryVector, k * 3) // Get more results
return this.applyMetadataFilter(allResults, options.metadata).slice(0, k)
}
}
// ... existing non-filtered search code ...
}
```
## Expected Performance Improvements
### High Selectivity Filters (< 5% match rate)
- **Current**: 150ms with 3x ef multiplier
- **Optimized**: ~15ms with direct candidate search
- **Improvement**: **90% faster**
### Medium Selectivity Filters (5-30% match rate)
- **Current**: 150ms with fixed 3x multiplier
- **Optimized**: ~45-75ms with dynamic multiplier
- **Improvement**: **50-70% faster**
### Low Selectivity Filters (> 30% match rate)
- **Current**: 150ms with unnecessary filtering overhead
- **Optimized**: ~32ms with post-filtering
- **Improvement**: **80% faster**
## Implementation Plan
### Phase 1: Core Infrastructure (1-2 days)
1. Add selectivity calculation methods to `BrainyData`
2. Implement dynamic ef calculation logic
3. Add configuration options for strategy thresholds
### Phase 2: Search Strategy Implementation (2-3 days)
1. Implement `searchCandidatesOnly` in `HNSWIndex`
2. Add smart strategy selection to search method
3. Implement post-filtering strategy
### Phase 3: Configuration & Tuning (1 day)
1. Add configuration options for selectivity thresholds
2. Add performance monitoring and logging
3. Update documentation with optimization guidance
### Phase 4: Testing & Validation (1-2 days)
1. Update performance tests with new benchmarks
2. Add test cases for different selectivity scenarios
3. Validate backward compatibility
## Configuration Options
```typescript
interface MetadataIndexConfig {
// Existing options...
// New optimization options
selectivityThresholds?: {
indexFirst: number // Default: 0.05 (5%)
hnswFilter: number // Default: 0.3 (30%)
}
dynamicEf?: {
enabled: boolean // Default: true
minMultiplier: number // Default: 1.2
maxMultiplier: number // Default: 3.0
}
performanceLogging?: {
enabled: boolean // Default: false
logSelectivity: boolean // Default: false
}
}
```
## Backward Compatibility
- All existing APIs remain unchanged
- Default behavior maintains current functionality if optimizations disabled
- Gradual rollout possible with feature flags
- Performance improvements are opt-in via configuration
## Testing Strategy
```typescript
// New performance tests to add
describe('Metadata Search Optimization', () => {
it('should use index-first for high selectivity filters', async () => {
// Test with filter matching <5% of items
// Verify strategy selection and performance improvement
})
it('should use dynamic ef for medium selectivity filters', async () => {
// Test with filter matching 5-30% of items
// Verify ef calculation and performance improvement
})
it('should use post-filtering for low selectivity filters', async () => {
// Test with filter matching >30% of items
// Verify strategy selection and performance improvement
})
})
```
## Risk Assessment
**Low Risk Changes**:
- Configuration additions
- New method implementations
- Performance logging
**Medium Risk Changes**:
- Strategy selection logic
- Dynamic ef calculation
**Mitigation Strategies**:
- Feature flags for gradual rollout
- Extensive testing with different dataset sizes
- Fallback to original behavior on errors
- Performance monitoring to detect regressions
## Success Metrics
1. **Performance Improvement**: 50-90% reduction in filtered search time
2. **Selectivity Accuracy**: Strategy selection matches actual selectivity
3. **Resource Usage**: No significant increase in memory or CPU
4. **Compatibility**: All existing tests continue to pass
5. **User Experience**: Improved search response times in real applications
## Future Enhancements
1. **Query Pattern Analysis**: Learn from search patterns to optimize strategy selection
2. **Index Warmup**: Pre-calculate common filter combinations
3. **Parallel Candidate Search**: Multi-threaded candidate evaluation
4. **Index Compression**: Reduce storage overhead for large datasets
5. **Adaptive Thresholds**: Machine learning-based threshold optimization
This optimization will significantly improve the metadata filtering system's performance while maintaining the robust architecture and backward compatibility.

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@ -1,227 +0,0 @@
# Brainy Metadata Filtering Performance Analysis
## Executive Summary
The metadata filtering system in Brainy provides powerful search capabilities with indexing optimizations, but comes with specific performance trade-offs. This analysis examines the performance impact across five key dimensions: index build time, storage overhead, search performance, memory usage, and write operations.
## Key Findings
### 1. Index Build Time Impact
**Performance Overhead: 8.8%**
- **Without indexing**: 138.24ms per item for 100 items
- **With indexing**: 150.46ms per item for 100 items
- **Overhead**: 8.8% slower initialization when metadata indexing is enabled
The overhead is primarily due to:
- Building inverted indexes for each metadata field
- Writing index entries to storage
- Initial cache population
### 2. Index Storage Overhead
**Storage Overhead: 26 bytes per item**
From test with 100 items containing 6 indexed fields each:
- **Total index entries**: 26 unique field-value combinations
- **Total indexed IDs**: 600 (100 items × 6 fields average)
- **Index size**: 2,600 bytes (26 bytes per item)
- **Storage efficiency**: Very compact representation
**Index Structure:**
- **Storage Location**: `_system` directory with `__metadata_index__` prefix
- **Index Format**: Inverted indexes mapping `field:value``Set<id>`
- **Cached Fields**: department, level, location, salary, remote, active (excludes id, createdAt, updatedAt by default)
### 3. Search Performance Analysis
**Critical Finding: 379-386% overhead when filtering is enabled**
#### Performance Breakdown:
- **No filtering**: 31.46ms average
- **Simple filter** (department='Engineering'): 150.82ms average (**379.4% overhead**)
- **Complex filter** (multiple conditions): 153.05ms average (**386.5% overhead**)
#### Root Cause Analysis:
The performance overhead stems from the **3x ef multiplier** implementation in `/src/hnsw/hnswIndex.ts:377`:
```typescript
const ef = filter ? Math.max(this.config.efSearch * 3, k * 3) : Math.max(this.config.efSearch, k)
```
This multiplier compensates for potential filtering but significantly increases the search space:
- **Default efSearch**: Typically 50-100
- **With filtering**: 150-300+ candidates evaluated
- **Impact**: 3x more vector calculations and distance computations
#### Search Process with Metadata Filtering:
1. **Pre-filtering Phase**:
- Query metadata index for candidate IDs: ~0.1ms
- Create filtered ID set: ~0.05ms
2. **HNSW Search Phase** (Major bottleneck):
- Search with 3x larger ef parameter: ~150ms
- Evaluate 3x more vector similarities
- Apply metadata filter to results: ~0.2ms
3. **Post-processing**:
- Re-rank and limit results: ~0.1ms
### 4. Memory Usage Impact
**Memory Overhead: ~26 bytes per indexed item**
The metadata index system uses:
- **Index Cache**: In-memory Map storing field-value → ID mappings
- **LRU Eviction**: Automatic cleanup of unused entries
- **Dirty Tracking**: Efficient batch writes to storage
- **Memory Efficiency**: Minimal overhead per item
### 5. Write Performance Impact
**Excellent Write Performance with Indexing**
- **ADD**: 154.35ms per item (includes embedding generation)
- **UPDATE**: 0.03ms per item (**very fast**)
- **DELETE**: 0.10ms per item (**very fast**)
Write operations benefit from:
- **Efficient Index Updates**: O(1) hash lookups
- **Batch Operations**: Dirty tracking for efficient storage writes
- **Automatic Cleanup**: Empty index entries are automatically removed
## Performance Recommendations
### 1. Immediate Optimizations
#### A. Dynamic ef Multiplier
**Current Issue**: Fixed 3x multiplier regardless of filter selectivity
**Recommendation**: Implement dynamic ef calculation based on index statistics:
```typescript
const estimateSelectivity = async (filter: MetadataFilter): Promise<number> => {
if (!this.metadataIndex) return 1.0
const totalItems = this.index.getSize()
const candidateIds = await this.metadataIndex.getIdsForCriteria(filter)
return candidateIds.length / totalItems
}
// Use in search:
const selectivity = await this.estimateSelectivity(filter)
const multiplier = selectivity < 0.1 ? 2.0 : selectivity < 0.3 ? 1.5 : 1.2
const ef = Math.max(this.config.efSearch * multiplier, k * multiplier)
```
**Expected Impact**: 50-70% reduction in search overhead for high-selectivity filters
#### B. Index-First Search Strategy
**Current**: Always search full HNSW then filter
**Proposed**: Pre-filter significantly when index suggests high selectivity
```typescript
if (candidateIds.length < totalItems * 0.1) {
// High selectivity: search only candidate vectors
return this.searchCandidatesOnly(candidateIds, queryVector, k)
} else {
// Low selectivity: use current HNSW + filter approach
return this.searchWithFilter(queryVector, k, filter)
}
```
### 2. Configuration Recommendations
#### A. Selective Field Indexing
**Default**: Index all metadata fields (can be wasteful)
**Recommended**: Configure specific fields for indexing
```typescript
metadataIndex: {
indexedFields: ['department', 'level', 'location'], // Only frequently filtered fields
excludeFields: ['id', 'createdAt', 'updatedAt', 'description'],
autoOptimize: true
}
```
#### B. Index Size Limits
Configure appropriate limits based on use case:
```typescript
metadataIndex: {
maxIndexSize: 50000, // Increase for large datasets
rebuildThreshold: 0.05, // More aggressive rebuilding
}
```
### 3. Use Case Specific Optimizations
#### High-Selectivity Scenarios (< 10% match rate)
- Use smaller ef multiplier (1.2-1.5x)
- Enable aggressive index pre-filtering
- Consider dedicated filtered search paths
#### Low-Selectivity Scenarios (> 50% match rate)
- Disable metadata indexing for better performance
- Use post-filtering instead of HNSW filtering
- Consider vector-first search strategies
#### Mixed Workloads
- Implement adaptive ef multipliers
- Use query pattern analysis
- Enable smart caching strategies
## Implementation Architecture
### MetadataIndexManager Design
**Strengths**:
- ✅ Efficient inverted index structure
- ✅ LRU cache for frequently accessed entries
- ✅ Automatic index maintenance
- ✅ Storage in separate `_system` directory
- ✅ Backward compatibility with non-indexed searches
**Areas for Improvement**:
- ⚠️ Fixed 3x ef multiplier regardless of selectivity
- ⚠️ No query optimization based on index statistics
- ⚠️ Limited index compression for large datasets
### Storage Integration
**Well-designed storage patterns**:
- Index entries stored with `__metadata_index__` prefix
- Efficient serialization of Sets to Arrays
- Proper cleanup of empty index entries
- Flush batching for write performance
## Benchmark Summary
| Operation | Without Index | With Index | Overhead |
|-----------|--------------|------------|----------|
| **Initialization** | 138.24ms/item | 150.46ms/item | +8.8% |
| **Simple Search** | 31.46ms | 150.82ms | +379.4% |
| **Complex Search** | 31.46ms | 153.05ms | +386.5% |
| **Add Operations** | N/A | 154.35ms/item | (includes embedding) |
| **Update Operations** | N/A | 0.03ms/item | (very fast) |
| **Delete Operations** | N/A | 0.10ms/item | (very fast) |
| **Storage Overhead** | 0 bytes | 26 bytes/item | minimal |
## Conclusion
The metadata filtering system provides powerful search capabilities with reasonable storage and initialization overhead. However, the **current search implementation has significant performance bottlenecks** due to the fixed 3x ef multiplier.
**Key Takeaways**:
1. **Index building** is efficient with only 8.8% overhead
2. **Storage overhead** is minimal at 26 bytes per item
3. **Write operations** are very fast due to efficient index updates
4. **Search performance** needs optimization - currently 300-400% slower when filtering
5. **Memory usage** is reasonable and well-managed
**Priority Action Items**:
1. Implement dynamic ef multiplier based on filter selectivity
2. Add index-first search for high-selectivity filters
3. Provide configuration guidance for different use cases
4. Consider query pattern analysis for automatic optimization
The system architecture is solid and well-designed; the performance issues are primarily in the search optimization logic and can be addressed with the recommended improvements.

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@ -1,275 +0,0 @@
# Migration Guide: Brainy 0.x → 1.0
This guide will help you upgrade from Brainy 0.x to 1.0.0-rc.1. While there are breaking changes, most functionality has been simplified and improved.
## 🎯 **Quick Migration Checklist**
- [ ] Update package: `npm install @soulcraft/brainy@rc`
- [ ] Update CLI commands (see mapping below)
- [ ] Replace `addSmart()` with `add()`
- [ ] Update any pipeline imports
- [ ] Test functionality with new API
- [ ] Enable new features (encryption, soft delete)
## 📦 **Package Installation**
```bash
# Install the release candidate
npm install @soulcraft/brainy@rc
# Or with yarn
yarn add @soulcraft/brainy@rc
```
## 🔄 **API Method Changes**
### Core Data Operations
| **0.x Method** | **1.0 Method** | **Notes** |
|----------------|----------------|-----------|
| `addSmart(data, metadata)` | `add(data, metadata)` | Smart by default now |
| `add(data, metadata)` | `add(data, metadata, { process: 'literal' })` | Use literal option for old behavior |
| `searchSimilar(query, k)` | `search(query, k)` | Same functionality, cleaner name |
| `searchByMetadata(filter)` | `search('', k, { metadata: filter })` | Unified search interface |
| `searchConnected(id, k)` | `search('', k, { searchConnectedNouns: true })` | Part of unified search |
### NEW Methods in 1.0
```javascript
// New methods available
await brainy.import([data1, data2, data3]) // Bulk import
await brainy.addNoun(data, NounType.Person) // Explicit typing
await brainy.update(id, newData, newMetadata) // Smart updates
await brainy.delete(id) // Soft delete by default
await brainy.delete(id, { soft: false }) // Hard delete if needed
```
## 🖥️ **CLI Command Changes**
### Command Mapping
| **0.x Command** | **1.0 Command** | **Notes** |
|-----------------|-----------------|-----------|
| `brainy add-smart "data"` | `brainy add "data"` | Smart by default |
| `brainy add-literal "data"` | `brainy add "data" --literal` | Use literal flag |
| `brainy search-similar "query"` | `brainy search "query"` | Cleaner naming |
| `brainy search-metadata '{"type":"person"}'` | `brainy search "" --filter '{"type":"person"}'` | Unified search |
| `brainy list-stats` | `brainy status` | Enhanced status command |
| Multiple config commands | `brainy config <action>` | Unified config management |
### NEW CLI Commands
```bash
brainy init --encryption # Initialize with encryption
brainy update <id> --data "new" # Update existing data
brainy delete <id> # Soft delete (default)
brainy delete <id> --hard # Hard delete
brainy import data.json # Bulk import
```
### Removed CLI Commands
These commands have been consolidated:
- `brainy add-smart``brainy add`
- `brainy add-literal``brainy add --literal`
- `brainy search-similar``brainy search`
- `brainy search-metadata``brainy search --filter`
- Various config commands → `brainy config`
## 🏗️ **Architecture Changes**
### Pipeline/Cortex Changes
```javascript
// OLD - Multiple pipeline classes
import {
SequentialPipeline,
ParallelPipeline,
StreamlinedPipeline
} from '@soulcraft/brainy'
// NEW - One unified Cortex class
import { Pipeline, Cortex } from '@soulcraft/brainy'
// Both Pipeline and Cortex are the same class
const pipeline = new Pipeline() // or new Cortex()
```
### Import Path Changes
Most imports remain the same, but some internal imports may have changed:
```javascript
// These should still work
import { BrainyData, NounType, VerbType } from '@soulcraft/brainy'
// Check these if you were using internal APIs
// (Most users won't need to change anything)
```
## 🔐 **New Encryption Features**
1.0 introduces comprehensive encryption support:
```javascript
// Initialize with encryption
const brainy = new BrainyData()
await brainy.init()
// Encrypt configuration
await brainy.setConfig('api-key', 'secret-key', { encrypt: true })
// Encrypt individual data items
await brainy.add("sensitive data", {}, { encrypt: true })
// CLI encryption
brainy init --encryption
brainy add "sensitive data" --encrypt
```
## 📊 **Soft Delete by Default**
The new `delete()` method uses soft delete by default:
```javascript
// Soft delete (preserves indexes, better performance)
await brainy.delete(id) // Default behavior
// Hard delete (removes from indexes)
await brainy.delete(id, { soft: false })
// Cascade delete (deletes related verbs)
await brainy.delete(id, { cascade: true })
```
Search automatically excludes soft-deleted items.
## 🐳 **Container Deployment**
New container-optimized features:
```javascript
// Preload models for containers
await BrainyData.preloadModel({
model: 'Xenova/all-MiniLM-L6-v2',
cacheDir: './models'
})
// Container-optimized initialization
const brainy = await BrainyData.warmup({
storage: { forceMemoryStorage: true }
}, {
preloadModel: true
})
```
## 🧪 **Testing Your Migration**
### Basic Functionality Test
```javascript
import { BrainyData } from '@soulcraft/brainy'
async function testMigration() {
const brainy = new BrainyData()
await brainy.init()
// Test core functionality
const id = await brainy.add("Test migration data")
const results = await brainy.search("migration", 5)
await brainy.update(id, "Updated data")
await brainy.delete(id) // Soft delete
console.log("✅ Migration successful!")
}
testMigration()
```
### CLI Test
```bash
# Test CLI functionality
brainy add "Test data"
brainy search "test"
brainy status
brainy --help
```
## ⚠️ **Breaking Changes Summary**
### Definite Breaking Changes
1. **CLI commands renamed** - Most commands have new names
2. **`addSmart()` method removed** - Use `add()` instead
3. **Pipeline classes consolidated** - Multiple classes → one Cortex
4. **Some internal import paths** - Check if using internal APIs
### Likely Compatible
1. **Core API methods** - `add()`, `search()` largely the same
2. **Storage adapters** - All existing adapters work
3. **Configuration** - Existing configs should work
4. **Data format** - Your existing data is compatible
## 🆘 **Getting Help**
If you encounter issues during migration:
1. **Check the examples** in this guide
2. **Test with a small dataset** first
3. **File an issue** with the `migration` label
4. **Join discussions** for community help
### Common Migration Issues
**Issue**: `addSmart is not a function`
```javascript
// Fix: Use add() instead
await brainy.add(data, metadata) // Smart by default
```
**Issue**: CLI command not found
```bash
# Fix: Check command mapping above
brainy search "query" # Not search-similar
```
**Issue**: Pipeline import error
```javascript
// Fix: Use unified import
import { Pipeline } from '@soulcraft/brainy'
```
## 🎉 **New Features to Explore**
After migration, try these new features:
```javascript
// Bulk import
const ids = await brainy.import([data1, data2, data3])
// Explicit noun typing
await brainy.addNoun(personData, NounType.Person)
// Encrypted storage
await brainy.add(sensitiveData, {}, { encrypt: true })
// Smart updates
await brainy.update(id, newData, { cascade: true })
```
```bash
# New CLI features
brainy init --encryption --storage s3
brainy import large-dataset.json
brainy delete old-id --cascade
brainy chat "Tell me about my data"
```
## 📞 **Support**
- **📚 Documentation**: Updated for 1.0 API
- **🐛 Issues**: [GitHub Issues](https://github.com/soulcraftlabs/brainy/issues)
- **💬 Discussions**: [GitHub Discussions](https://github.com/soulcraftlabs/brainy/discussions)
- **🏷️ Tags**: Use `migration`, `1.0-rc.1`, `breaking-change` tags
**We're here to help make your migration smooth!** 🚀

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@ -1,143 +0,0 @@
# Migration Plan: Deprecated Methods
## Overview
This document outlines the migration plan for deprecated methods in the Brainy codebase. These methods are marked as deprecated due to potential memory issues with large datasets.
## Deprecated Methods
### 1. Storage Adapter Methods
- `getAllNouns()` → Use `getNouns()` with pagination
- `getAllVerbs()` → Use `getVerbs()` with pagination
- `getNounsByNounType(nounType)` → Use `getNouns({ nounType })`
- `getVerbsBySource(sourceId)` → Use `getVerbs({ sourceId })`
- `getVerbsByTarget(targetId)` → Use `getVerbs({ targetId })`
- `getVerbsByType(type)` → Use `getVerbs({ verbType: type })`
### 2. HNSW Index Methods
- `getNouns()` → Use `getNounsPaginated()`
## Migration Strategy
### Phase 1: Update Internal BrainyData Usage (High Priority)
**Files to update:**
- `src/brainyData.ts` - 8 usages of deprecated methods
- `src/augmentations/memoryAugmentations.ts` - 1 usage
- `src/mcp/brainyMCPAdapter.ts` - 2 usages
**Specific Changes:**
#### src/brainyData.ts
```typescript
// OLD:
const nouns = await this.storage!.getAllNouns()
// NEW:
const nouns: HNSWNoun[] = []
let cursor: SearchCursor | undefined
do {
const result = await this.storage!.getNouns({}, { limit: 1000, cursor })
nouns.push(...result.results)
cursor = result.cursor
} while (cursor)
```
#### src/augmentations/memoryAugmentations.ts
```typescript
// OLD:
const nodes = await this.storage.getAllNouns()
// NEW:
const nodes = await this.storage.getNouns({}, { limit: Number.MAX_SAFE_INTEGER })
```
#### src/mcp/brainyMCPAdapter.ts
```typescript
// OLD:
const outgoing = await (this.brainyData as any).getVerbsBySource?.(id) || []
// NEW:
const outgoing = await this.brainyData.getVerbs({ sourceId: id }, { limit: Number.MAX_SAFE_INTEGER }) || []
```
### Phase 2: Update Storage Adapter Implementations (Medium Priority)
**Files to update:**
- `src/storage/adapters/memoryStorage.ts`
- `src/storage/adapters/fileSystemStorage.ts`
- `src/storage/adapters/opfsStorage.ts`
- `src/storage/adapters/s3CompatibleStorage.ts`
**Strategy:** Keep deprecated methods but mark them as internal-only and implement them using the new filtered methods.
### Phase 3: Update Type Definitions (Low Priority)
**Files to update:**
- `src/coreTypes.ts` - Remove deprecated method signatures
- `src/storage/baseStorage.ts` - Remove deprecated implementations
### Phase 4: Update Tests (Low Priority)
**Files to update:**
- `tests/*.test.ts` - Update test files that use deprecated methods
## Implementation Order
### 1. Immediate (Safe Changes)
- ✅ Remove unused files (tensorflowUtils.ts, etc.)
- ✅ Fix TODO items with version handling
- Update internal BrainyData usage with pagination
### 2. Short-term (1-2 weeks)
- Update augmentation and MCP adapter usage
- Add deprecation warnings to method implementations
- Update storage adapter internal implementations
### 3. Long-term (Next major version)
- Remove deprecated method signatures from interfaces
- Remove deprecated method implementations
- Update all test files
## Backward Compatibility
### Option 1: Gradual Deprecation (Recommended)
- Keep deprecated methods but add console warnings
- Implement them using new filtered methods internally
- Remove in next major version (0.42.0 → 1.0.0)
### Option 2: Immediate Removal
- Remove deprecated methods now
- Update all usage immediately
- Risk: Breaking changes for external users
## Testing Strategy
1. **Unit Tests**: Update existing tests to use new methods
2. **Integration Tests**: Verify pagination works correctly
3. **Performance Tests**: Ensure new implementations don't regress performance
4. **Memory Tests**: Verify large dataset handling improves
## Rollback Plan
If issues arise:
1. Revert to previous implementations
2. Add memory limits as temporary solution
3. Implement pagination more gradually
## Success Criteria
- ✅ All deprecated method usage removed from core files
- ✅ No memory issues with large datasets
- ✅ Performance maintained or improved
- ✅ All tests passing
- ✅ Backward compatibility preserved (if Option 1)
## Timeline
- **Week 1**: Complete Phase 1 (internal usage)
- **Week 2**: Complete Phase 2 (storage adapters)
- **Week 3**: Complete Phase 3 (type definitions)
- **Week 4**: Complete Phase 4 (tests) and validation
## Notes
- The deprecated methods are still widely used, so this migration requires careful planning
- Consider adding configuration option to control pagination limits
- Document the breaking changes clearly in CHANGELOG.md
- Consider providing migration utilities for external users

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@ -1,56 +0,0 @@
# Offline Models
Brainy uses Transformers.js with ONNX Runtime for **true offline operation** - no more TensorFlow.js dependency hell!
## How it works
Brainy automatically figures out the best approach:
1. **First use**: Downloads models once (~87 MB) to local cache
2. **Subsequent use**: Loads from cache (completely offline, zero network calls)
3. **Smart detection**: Automatically finds models in cache, bundled, or downloads as needed
## Standard usage
```bash
npm install @soulcraft/brainy
# Use immediately - models download automatically on first use
```
## Docker with production egress restrictions
For environments where production has no internet but build does:
```dockerfile
FROM node:24-slim
WORKDIR /app
COPY package*.json ./
RUN npm install @soulcraft/brainy
RUN npm run download-models # Download during build (when internet available)
COPY . .
# Production container now works completely offline
```
## Development with immediate offline
If you want models available immediately for development:
```bash
npm install @soulcraft/brainy
npm run download-models # Optional: download now instead of on first use
```
## Key benefits vs TensorFlow.js
- ✅ **95% smaller package** - 643 kB vs 12.5 MB
- ✅ **84% smaller models** - 87 MB vs 525 MB
- ✅ **True offline** - Zero network calls after initial download
- ✅ **No dependency issues** - 5 deps vs 47+, no more --legacy-peer-deps
- ✅ **Better performance** - ONNX Runtime beats TensorFlow.js
- ✅ **Same API** - Drop-in replacement
## Philosophy
**Install and use. Brainy handles the rest.**
No configuration files, no environment variables, no complex setup. Brainy detects your environment and does the right thing automatically.

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@ -1,204 +0,0 @@
# 🚀 Metadata Filtering Performance Optimization
**Priority: HIGH** | **Complexity: Medium** | **Est. Time: 2-3 hours**
## 🎯 The Issue
Current metadata filtering has a **300-400% search overhead** due to a fixed 3x ef multiplier in HNSW search, regardless of filter selectivity.
### Performance Analysis
- **No filtering**: 31.46ms average
- **Simple filter**: 150.82ms average (**379% overhead**)
- **Complex filter**: 153.05ms average (**386% overhead**)
### Root Cause
```typescript
// Current implementation (inefficient)
// File: src/hnsw/hnswIndex.ts:377
const ef = filter ? Math.max(this.config.efSearch * 3, k * 3) : Math.max(this.config.efSearch, k)
```
The **fixed 3x multiplier** is used for ALL filtered searches, whether the filter matches 1% or 90% of items.
## 🛠️ Solution: Dynamic ef Multiplier
### 1. Calculate Filter Selectivity
```typescript
// Add to searchByNounTypes method
const selectivity = candidateIds.length / totalItems
```
### 2. Dynamic Multiplier Strategy
```typescript
function getEfMultiplier(selectivity: number): number {
if (selectivity <= 0.01) return 1.1 // 1% match: minimal overhead
if (selectivity <= 0.05) return 1.3 // 5% match: small overhead
if (selectivity <= 0.15) return 1.6 // 15% match: medium overhead
if (selectivity <= 0.30) return 2.0 // 30% match: higher overhead
return 1.0 // 30%+ match: no overhead (post-filter)
}
```
### 3. Implementation Location
**File**: `src/brainyData.ts`
**Method**: `searchByNounTypes` (around line 2165)
```typescript
// Current code around line 2165:
if (hasMetadataFilter && this.metadataIndex) {
const candidateIds = await this.metadataIndex.getIdsForCriteria(options.metadata)
// ADD THIS: Calculate selectivity
const totalItems = this.index.size()
const selectivity = candidateIds.length / totalItems
const efMultiplier = getEfMultiplier(selectivity)
// Store efMultiplier for use in HNSW search
}
```
**File**: `src/hnsw/hnswIndex.ts`
**Method**: `search` (around line 377)
```typescript
// Replace this line:
const ef = filter ? Math.max(this.config.efSearch * 3, k * 3) : Math.max(this.config.efSearch, k)
// With dynamic calculation:
const ef = filter && filterSelectivity
? Math.max(this.config.efSearch * filterSelectivity.multiplier, k)
: Math.max(this.config.efSearch, k)
```
## 📈 Expected Performance Improvements
| Filter Selectivity | Current Overhead | Expected Overhead | Improvement |
|-------------------|------------------|-------------------|-------------|
| 1% (high selectivity) | 379% | 50% | **85% faster** |
| 5% (medium selectivity) | 379% | 80% | **70% faster** |
| 15% (low selectivity) | 379% | 150% | **50% faster** |
| 30%+ (very low selectivity) | 379% | 10% | **90% faster** |
## 🔧 Implementation Steps
### Step 1: Add Selectivity Calculation
1. Modify `searchByNounTypes` to calculate selectivity
2. Pass selectivity info to HNSW search method
3. Create `getEfMultiplier` helper function
### Step 2: Update HNSW Search
1. Modify `HNSWIndex.search` to accept selectivity parameter
2. Update `HNSWIndexOptimized.search` to forward selectivity
3. Replace fixed 3x multiplier with dynamic calculation
### Step 3: Test Performance
1. Run performance benchmarks with different selectivity scenarios
2. Verify filtering accuracy is maintained
3. Test edge cases (empty results, 100% selectivity)
### Step 4: Optional Enhancements
1. **Index-First Strategy**: For <5% selectivity, search only candidate vectors
2. **Post-Filter Strategy**: For >50% selectivity, search all then filter
3. **Query Pattern Learning**: Track and optimize based on common patterns
## 🧪 Test Cases
```typescript
// High selectivity (1% match) - should be very fast
await brainy.search("developer", 10, {
metadata: { rare_certification: "specific_cert" }
})
// Medium selectivity (10% match) - should be moderately fast
await brainy.search("developer", 10, {
metadata: { level: "senior" }
})
// Low selectivity (50% match) - should use post-filtering
await brainy.search("developer", 10, {
metadata: { active: true }
})
```
## 📊 Monitoring
Add performance logging to track improvements:
```typescript
const start = Date.now()
const selectivity = candidateIds.length / totalItems
const efMultiplier = getEfMultiplier(selectivity)
console.log(`Filter selectivity: ${(selectivity * 100).toFixed(1)}%, ef multiplier: ${efMultiplier}`)
// After search
console.log(`Search completed in ${Date.now() - start}ms`)
```
## 🚨 Known Issues to Fix
### Issue 1: HNSWIndexOptimized Filtering Bug
**Status**: Identified but not fixed
**Problem**: `HNSWIndexOptimized.search()` method signature was missing filter parameter
**Solution**: Already added filter parameter, but needs verification
### Issue 2: Method Binding
**Problem**: TypeScript might not be calling overridden methods correctly
**Solution**: Verify method resolution and binding
## 🎉 Success Criteria
- [ ] Filtered search performance improves by 50-90% based on selectivity
- [ ] Filtering accuracy remains 100% correct
- [ ] No breaking changes to existing API
- [ ] Performance monitoring shows expected improvements
- [ ] All existing tests continue to pass
## 🧠 Additional Optimization: LRU Cache for Metadata Indexes
**Priority: MEDIUM** | **Complexity: Low** | **Est. Time: 1-2 hours**
### The Opportunity
Add LRU caching to metadata indexes similar to HNSW index caching:
```typescript
// Reuse existing infrastructure
this.metadataCache = new LRUCache<string, any>({
maxSize: config.maxCacheSize ?? 1000,
ttl: config.cacheTTL ?? 300000 // 5 minutes
})
// Cache field indexes and value chunks
const cachedFieldIndex = this.metadataCache.get(`field_${field}`)
```
### Expected Benefits
- **10-100x faster** repeated filter discovery
- **Zero latency** for common filter UI operations
- **90% code reuse** from existing HNSW cache system
- **Automatic learning** of usage patterns
### Implementation
1. Extend existing LRU cache to metadata indexes
2. Cache field indexes (`field_category.json`)
3. Cache hot value chunks (`category_electronics_chunk0.json`)
4. Add cache invalidation on metadata updates
5. Reuse existing cache statistics and monitoring
## 📝 Files to Modify
1. `src/brainyData.ts` (selectivity calculation)
2. `src/hnsw/hnswIndex.ts` (dynamic ef multiplier)
3. `src/hnsw/optimizedHNSWIndex.ts` (forward selectivity)
## 🔄 Rollback Plan
If performance optimization causes issues:
1. Revert to fixed 3x multiplier
2. Feature flag the optimization for gradual rollout
3. Add configuration option to disable dynamic multiplier
---
**This optimization will make metadata filtering 50-90% faster while maintaining the same powerful querying capabilities!** 🚀

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@ -1,164 +0,0 @@
# 🧠 Brainy Philosophy & Design Principles
## Core Philosophy
**"Simple for beginners, powerful for experts"**
## Design Principles
### 1. **Beginner-Friendly by Default**
- If no arguments provided → Interactive mode with helpful prompts
- Clear, simple language (no jargon)
- Helpful examples shown automatically
- Smart defaults that "just work"
### 2. **Clean, Simple Language**
```bash
# Good - Clear and simple
brainy add "John works at Acme Corp"
brainy search "Who works at Acme?"
brainy augment neural-import data.csv
# Bad - Technical and confusing
brainy insert --vector-dimension=384 --graph-node="person"
brainy query --similarity-threshold=0.8 --facet-filter='{"type":"person"}'
```
### 3. **Progressive Disclosure**
- Start simple, reveal complexity only when needed
- Basic usage requires no configuration
- Advanced features available but not required
### 4. **Interactive When Uncertain**
```bash
$ brainy add
? What would you like to add? John Smith is a developer
? Add any tags or categories? (optional) person, developer
✅ Added successfully!
$ brainy search
? What are you looking for? developers
? How many results? (10) 5
🔍 Found 5 matches...
```
### 5. **Consistent Brain Metaphor**
- **Brainy** = The brain (whole system)
- **Cortex** = Orchestrator (coordinates everything)
- **Neural Import** = Understanding data (neural processing)
- **Augmentations** = Brain capabilities (vision, hearing, memory, etc.)
### 6. **One Way to Do Things**
- Single clear path for common tasks
- No duplicate commands or confusing aliases
- If there are options, make the best one the default
### 7. **Helpful Error Messages**
```bash
# Good
❌ Can't find data.csv
💡 Did you mean data.json? Or try: brainy import --help
# Bad
Error: ENOENT no such file or directory
```
### 8. **Smart Defaults**
- Auto-detect file types
- Infer intent from context
- Use Neural Import by default for understanding data
- Automatic augmentation discovery
## CLI Command Philosophy
### Core Commands (Simple Verbs)
```bash
brainy init # Start here
brainy add # Add data
brainy search # Find data
brainy chat # Talk to your data
```
### Augmentation Commands (Clear Actions)
```bash
brainy augment # List/manage augmentations
brainy augment add neural-import # Add an augmentation
brainy augment remove notion-sync # Remove an augmentation
```
### Interactive Examples
```bash
# No arguments = Interactive mode
$ brainy add
? What would you like to add? [waiting for input]
# With arguments = Direct mode
$ brainy add "Sarah is a designer at StartupXYZ"
✅ Added!
# Help is conversational
$ brainy help add
📝 Add data to your brain
Examples:
brainy add "John works at Acme"
brainy add data.csv
brainy add --interactive
Just run 'brainy add' for interactive mode!
```
## Code Philosophy
### Function Names
```typescript
// Good - Clear and simple
brain.add(data)
brain.search(query)
cortex.process(augmentation)
// Bad - Technical and verbose
brain.insertVectorWithGraphRelationships(data)
brain.executeMultiDimensionalQuery(query)
cortex.executeAugmentationPipeline(augmentation)
```
### API Design
```typescript
// Good - Progressive enhancement
brain.add("simple text") // Works
brain.add("text", { category: "person" }) // More control
brain.add("text", metadata, options) // Full control
// Bad - All or nothing
brain.add(text, vector, metadata, options, callback)
```
## Documentation Philosophy
### README Structure
1. **What it is** (one sentence)
2. **Quick start** (3 commands max)
3. **Simple examples** (real-world use)
4. **Going deeper** (advanced features)
### Example First
Always show the example before explaining:
```bash
# Add a person
brainy add "Alice is a product manager"
# Find them later
brainy search "product manager"
```
## Testing Philosophy
- Test the beginner path first
- Interactive mode must always work
- Examples in docs must be runnable
- Error messages must be helpful
## Remember
- **If it's not simple, it's not ready**
- **The best interface is no interface** (smart defaults)
- **Show, don't tell** (examples > explanations)
- **Beginner's mind** (always ask: would a newcomer understand this?)

633
README.md
View file

@ -1,494 +1,217 @@
<div align="center">
<p align="center">
<img src="https://raw.githubusercontent.com/soulcraftlabs/brainy/main/brainy.png" alt="Brainy" width="180">
</p>
![Brainy Logo](brainy.png)
<h1 align="center">Brainy</h1>
[![npm version](https://badge.fury.io/js/%40soulcraft%2Fbrainy.svg)](https://badge.fury.io/js/%40soulcraft%2Fbrainy)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
[![Try Demo](https://img.shields.io/badge/Try%20Demo-Live-green.svg)](https://soulcraft.com)
[![Brain Cloud](https://img.shields.io/badge/Brain%20Cloud-Early%20Access-blue.svg)](https://soulcraft.com/brain-cloud)
[![Node.js](https://img.shields.io/badge/node-%3E%3D24.4.1-brightgreen.svg)](https://nodejs.org/)
[![TypeScript](https://img.shields.io/badge/TypeScript-5.4.5-blue.svg)](https://www.typescriptlang.org/)
<p align="center">
<b>Three database paradigms. One API. Zero configuration.</b><br>
The in-process knowledge database for TypeScript — vector search, graph traversal,<br>
and metadata filtering unified in a single query.
</p>
# The World's First Multi-Dimensional AI Database™
<p align="center">
<a href="https://www.npmjs.com/package/@soulcraft/brainy"><img src="https://img.shields.io/npm/v/@soulcraft/brainy.svg" alt="npm version"></a>
<a href="https://www.npmjs.com/package/@soulcraft/brainy"><img src="https://img.shields.io/npm/dm/@soulcraft/brainy.svg" alt="npm downloads"></a>
<a href="https://github.com/soulcraftlabs/brainy/actions/workflows/ci.yml"><img src="https://github.com/soulcraftlabs/brainy/actions/workflows/ci.yml/badge.svg" alt="CI"></a>
<a href="https://soulcraft.com/docs"><img src="https://img.shields.io/badge/docs-soulcraft.com-blue.svg" alt="Documentation"></a>
<a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="MIT License"></a>
<a href="https://www.typescriptlang.org/"><img src="https://img.shields.io/badge/%3C%2F%3E-TypeScript-%230074c1.svg" alt="TypeScript"></a>
</p>
*Vector similarity • Graph relationships • Metadata facets • Neural understanding*
**Build AI apps that actually understand your data - in minutes, not months**
</div>
<p align="center">
<a href="#quick-start">Quick start</a> ·
<a href="#one-query-three-engines">One query</a> ·
<a href="#feature-tour">Features</a> ·
<a href="#from-laptop-to-hundreds-of-millions">Scale with Cor</a> ·
<a href="#documentation">Docs</a>
</p>
---
## ✅ 100% Free & Open Source
Built because we were tired of stitching a vector store to a graph database to a document store — and spending weeks on plumbing before writing a line of business logic. Brainy indexes every fact **three ways at once** and lets one call query them together:
**Brainy is completely free. No license keys. No limits. No catch.**
| You write | Brainy indexes it as | You query it with |
|---|---|---|
| `data: 'Ada wrote the first program'` | a **384-dim vector** (local embedding — no API key) | `find({ query: 'computing pioneers' })` |
| `metadata: { field: 'CS', year: 1843 }` | **structured fields** (O(1) exact, O(log n) range) | `find({ where: { year: { lessThan: 1900 } } })` |
| `relate({ from: ada, to: babbage })` | a **typed, directed graph edge** | `find({ connected: { to: babbage, depth: 2 } })` |
Every feature you see here works without any payment or registration:
- ✓ Full vector database
- ✓ Graph relationships
- ✓ Semantic search
- ✓ All storage adapters
- ✓ Complete API
- ✓ Forever free
It runs **inside your process** — no server, no Docker, nothing to operate — and persists to plain files you can snapshot with a hard link.
> 🌩️ **Brain Cloud** is an optional add-on for teams who want cloud sync and enterprise connectors.
**New here?** → **[What is Brainy? — plain-language overview, no jargon](docs/eli5.md)**
---
## Quick start
## 🚀 What Can You Build?
### 💬 **AI Chat Apps** - That Actually Remember
```javascript
// Your users' conversations persist across sessions
const brain = new BrainyData()
await brain.add("User prefers dark mode")
await brain.add("User is learning Spanish")
// Later sessions remember everything
const context = await brain.search("user preferences")
// AI knows: dark mode + Spanish learning preference
```
### 🤖 **Smart Assistants** - With Real Knowledge Graphs
```javascript
// Build assistants that understand relationships
await brain.add("Sarah manages the design team")
await brain.addVerb("Sarah", "reports_to", "John")
await brain.addVerb("Sarah", "works_on", "Project Apollo")
// Query complex relationships
const team = await brain.getRelated("Project Apollo", {
verb: "works_on",
depth: 2
})
// Returns: entire team structure with relationships
```
### 📊 **RAG Applications** - Without the Complexity
```javascript
// Retrieval-Augmented Generation in 3 lines
await brain.add(companyDocs) // Add your knowledge base
const relevant = await brain.search(userQuery, 10) // Find relevant context
const answer = await llm.generate(relevant + userQuery) // Generate with context
```
### 🔍 **Semantic Search** - That Just Works
```javascript
// No embeddings API needed - it's built in!
await brain.add("The iPhone 15 Pro has a titanium design")
await brain.add("Samsung Galaxy S24 features AI photography")
const results = await brain.search("premium smartphones with metal build")
// Returns: iPhone (titanium matches "metal build" semantically)
```
### 🎯 **Recommendation Engines** - With Graph Intelligence
```javascript
// Netflix-style recommendations with relationships
await brain.addVerb("User123", "watched", "Inception")
await brain.addVerb("User123", "liked", "Inception")
await brain.addVerb("Inception", "similar_to", "Interstellar")
const recommendations = await brain.getRelated("User123", {
verb: ["liked", "watched"],
depth: 2
})
// Returns: Interstellar and other related content
```
## 💫 Why Brainy? The Problem We Solve
### ❌ **The Old Way: Database Frankenstein**
```
Pinecone ($750/mo) + Neo4j ($500/mo) + Elasticsearch ($300/mo) +
Sync nightmares + 3 different APIs + Vendor lock-in = 😱💸
```
### ✅ **The Brainy Way: One Brain, All Dimensions**
```
Vector + Graph + Search + AI = Brainy (Free & Open Source) = 🧠✨
```
**Your data gets superpowers. Your wallet stays happy.**
## 🎮 Try It Now - No Install Required!
<div align="center">
### [**→ Live Demos at soulcraft.com/demo ←**](https://soulcraft.com/demo)
Try Brainy instantly in your browser. No signup. No credit card.
</div>
## ⚡ Quick Start (60 Seconds)
### Open Source (Local Storage)
```bash
npm install @soulcraft/brainy
bun add @soulcraft/brainy # Bun ≥ 1.1 — recommended
npm install @soulcraft/brainy # Node.js ≥ 22
```
```javascript
import { BrainyData } from '@soulcraft/brainy'
import { Brainy, NounType, VerbType } from '@soulcraft/brainy'
// Zero configuration - it just works!
const brain = new BrainyData()
const brain = new Brainy() // in-memory; one line swaps to disk
await brain.init()
// Add any data - text, objects, relationships
await brain.add("Elon Musk founded SpaceX in 2002")
await brain.add({ company: "Tesla", ceo: "Elon Musk", founded: 2003 })
await brain.addVerb("Elon Musk", "founded", "Tesla")
// Text auto-embeds locally; metadata auto-indexes
const react = await brain.add({
data: 'React is a JavaScript library for building user interfaces',
type: NounType.Concept,
subtype: 'library',
metadata: { category: 'frontend', year: 2013 }
})
// Search naturally
const results = await brain.search("companies founded by Elon")
const next = await brain.add({
data: 'Next.js is a React framework with server-side rendering',
type: NounType.Concept,
subtype: 'framework',
metadata: { category: 'frontend', year: 2016 }
})
await brain.relate({ from: next, to: react, type: VerbType.DependsOn, subtype: 'runtime' })
```
### ☁️ Brain Cloud (AI Memory + Agent Coordination)
## One query, three engines
```javascript
const results = await brain.find({
query: 'modern frontend frameworks', // vector — what it means
where: { year: { greaterThan: 2015 } }, // metadata — what it is
connected: { to: react, depth: 2 } // graph — what it touches
})
```
Every clause is optional; any combination composes. Under the hood Brainy plans the query across an HNSW vector index, a roaring-bitmap field index, and an adjacency graph index — and re-validates every result against your predicate before returning it, so a corrupt index can never hand you a wrong answer.
## Feature tour
### The database is a value
Pin it, rewind it, fork it. Snapshot isolation without a server.
```javascript
const db = brain.now() // pin current state — O(1)
await brain.transact([ // atomic all-or-nothing, CAS-guarded
{ op: 'update', id: order, metadata: { status: 'paid' } },
{ op: 'relate', from: invoice, to: order, type: VerbType.References, subtype: 'billing' }
], { ifAtGeneration: db.generation })
await db.get(order) // still 'pending' — pinned forever
await brain.get(order) // 'paid' — live
const lastWeek = await brain.asOf(Date.now() - 7 * 86_400_000) // full query surface, past state
const whatIf = await db.with([{ op: 'remove', id: order }]) // speculative — never touches disk
await brain.now().persist('/backups/today') // instant hard-link snapshot
```
**[Consistency model](docs/concepts/consistency-model.md)** · **[Snapshots & time travel](docs/guides/snapshots-and-time-travel.md)**
### Local embeddings — no API keys
Strings embed on-device with a bundled MiniLM model (WASM). Semantic search works offline, in CI, and on air-gapped machines, at zero cost per call. Hybrid keyword + semantic ranking is the default:
```javascript
await brain.find({ query: 'David Smith' }) // auto: text + semantic
await brain.find({ query: 'AI concepts', searchMode: 'semantic' }) // semantic only
```
### A typed graph, not a bag of edges
42 entity types × 127 relationship types form a shared vocabulary for any domain — healthcare (`Patient → diagnoses → Condition`), finance (`Account → transfers → Transaction`), yours. Your own taxonomy layers on with `subtype`, enforced at write time:
```javascript
await brain.add({ data: 'Avery Brooks', type: NounType.Person, subtype: 'employee' })
brain.counts.bySubtype(NounType.Person) // O(1) — { employee: 12, customer: 847 }
brain.requireSubtype(NounType.Person, { values: ['employee', 'customer'], required: true })
```
**[Type system](docs/architecture/noun-verb-taxonomy.md)** · **[Subtypes & facets](docs/guides/subtypes-and-facets.md)**
### Graph analytics built in
```javascript
await brain.graph.rank() // which entities matter most (centrality)
await brain.graph.communities() // natural clusters
await brain.graph.path(a, b) // how two things connect
await brain.graph.subgraph([seed], { depth: 2 }) // bounded neighborhood → { nodes, edges }
await brain.graph.export() // whole graph, one O(N+E) streaming pass
```
### Write-time aggregations
`SUM` / `COUNT` / `AVG` / `MIN` / `MAX` with `GROUP BY` and time windows, maintained incrementally on every write — reads are O(1) lookups, not scans. **[Aggregation guide](docs/guides/aggregation.md)**
### Import anything
```javascript
await brain.import('customers.csv')
await brain.import('sales.xlsx') // every sheet
await brain.import('research-paper.pdf') // tables extracted
await brain.import('https://api.example.com/data.json')
```
Entities auto-classify on the way in; `brain.extractEntities(text)` exposes the same NER ensemble directly. **[Import guide](docs/guides/import-anything.md)**
### A filesystem that understands content
```javascript
await brain.vfs.writeFile('/docs/readme.md', 'Project documentation')
await brain.vfs.search('React components with hooks') // semantic file search
```
**[VFS quick start](docs/vfs/QUICK_START.md)**
### Operations-grade by default
- **Single-writer, many-reader** — an exclusive lock protects the data directory; `Brainy.openReadOnly()` and the `brainy inspect` CLI examine a live brain from another process, safely.
- **Self-upgrading data files** — a 7.x brain opens under 8.x and migrates itself behind an observable lock (`getIndexStatus().migration`), with an automatic pre-upgrade backup. No migration scripts.
- **No silent wrong answers** — cold-open guards self-heal or throw typed errors (`MetadataIndexNotReadyError`, `GraphIndexNotReadyError`); they never return `[]` for data that exists.
**[Multi-process model](docs/concepts/multi-process.md)** · **[Inspection guide](docs/guides/inspection.md)**
## From laptop to hundreds of millions
Brainy's TypeScript engines take you a long way. When you outgrow them, add the native engine — **the API doesn't change**:
```bash
# Auto-setup with cloud instance provisioning (RECOMMENDED)
brainy cloud setup --email your@email.com
# Sign up at app.soulcraft.com (free trial)
brainy cloud auth # Auto-configures based on your plan
npm install @soulcraft/cor
```
```javascript
import { BrainyData, Cortex } from '@soulcraft/brainy'
// After authentication, augmentations auto-load
// No imports needed - they're managed by your account!
const brain = new BrainyData()
const cortex = new Cortex()
// Add premium augmentations (requires Early Access license)
cortex.register(new AIMemory())
cortex.register(new AgentCoordinator())
// Now your AI remembers everything across all sessions!
await brain.add("User prefers TypeScript over JavaScript")
// This memory persists and syncs across all devices
// Returns: SpaceX and Tesla with relevance scores
// Query relationships
const companies = await brain.getRelated("Elon Musk", { verb: "founded" })
// Returns: SpaceX, Tesla
// Filter with metadata
const recent = await brain.search("companies", 10, {
filter: { founded: { $gte: 2000 } }
})
const brain = new Brainy({ storage: { type: 'filesystem', path: './data' } })
await brain.init() // @soulcraft/cor detected — same code, native engines underneath
```
## 🧩 Augmentation System - Extend Your Brain
Installing the package is the opt-in: if `@soulcraft/cor` is present, it loads and announces itself in the init log; if it's present but broken, `init()` **throws** — an installed accelerator never silently vanishes behind the JS engines. Opt out with `plugins: []`, or pin exactly what loads with `plugins: ['@soulcraft/cor']`. [`@soulcraft/cor`](https://www.npmjs.com/package/@soulcraft/cor) (Brainy 8.x ↔ Cor 3.x, version-matched) registers Rust implementations behind every provider seam: SIMD distance kernels, memory-mapped storage, a disk-native vector index that doesn't need your dataset in RAM, durable LSM field/graph indexes that serve cold opens instantly, and native aggregation. Recall@10 measured **0.99 / 0.96 / 0.96 at 1M / 10M / 100M vectors** in Cor's release gate.
Brainy is **100% open source** with a powerful augmentation system. Choose what you need:
Open core, commercial accelerator: Brainy is MIT and complete on its own; Cor is licensed and funds both.
### 🆓 **Built-in Augmentations** (Always Free)
```javascript
import { NeuralImport } from '@soulcraft/brainy'
## Performance
// AI-powered data understanding - included in every install
const neural = new NeuralImport(brain)
await neural.neuralImport('data.csv') // Automatically extracts entities & relationships
```
- JS distance kernels: **~6× faster cosine, ~1.4× euclidean** than 7.x (measured: [`tests/benchmarks/distance-microbench.mjs`](tests/benchmarks/distance-microbench.mjs), 384-dim, median of 41).
- Whole-graph reads are single **O(N + E)** cursor walks — a consumer-measured 19k-edge export dropped from ~27 s of per-node calls to one scan.
- Full numbers and capacity planning: **[docs/PERFORMANCE.md](docs/PERFORMANCE.md)** · **[docs/SCALING.md](docs/SCALING.md)**
**Included augmentations:**
- ✅ **Neural Import** - AI understands your data structure
- ✅ **Basic Memory** - Persistent storage
- ✅ **Simple Search** - Text and vector search
- ✅ **Graph Traversal** - Relationship queries
## Use cases
### 🌟 **Community Augmentations** (Free, Open Source)
```bash
npm install brainy-sentiment # Community created
npm install brainy-translate # Community maintained
```
**AI agent memory** — persistent semantic recall with relationship tracking · **Knowledge bases** — auto-linking and meaning-aware navigation · **Semantic search** over codebases, documents, media · **Enterprise data** — CRM, catalogs, institutional memory · **Games & simulations** — worlds and characters that remember.
```javascript
import { SentimentAnalyzer } from 'brainy-sentiment'
import { Translator } from 'brainy-translate'
## Documentation
cortex.register(new SentimentAnalyzer()) // Analyze emotions
cortex.register(new Translator()) // Multi-language support
```
| Start | Core | Going deeper |
|---|---|---|
| [Brainy explained simply](docs/eli5.md) | [API reference](docs/api/README.md) | [Architecture overview](docs/architecture/overview.md) |
| [Installation](docs/guides/installation.md) | [Data model](docs/DATA_MODEL.md) | [Consistency model](docs/concepts/consistency-model.md) |
| [Natural-language queries](docs/guides/natural-language.md) | [Query operators](docs/QUERY_OPERATORS.md) | [Multi-process model](docs/concepts/multi-process.md) |
| | [Find system](docs/FIND_SYSTEM.md) | [Scaling](docs/SCALING.md) |
**Popular community augmentations:**
- 🎭 Sentiment Analysis
- 🌍 Translation (50+ languages)
- 📧 Email Parser
- 🔗 URL Extractor
- 📊 Data Visualizer
- 🎨 Image Understanding
## Requirements
### ☁️ **Brain Cloud** (Optional Add-On)
🌟 **Brainy works perfectly without this!** Brain Cloud adds team features:
**Bun ≥ 1.1** (recommended) or **Node.js ≥ 22**. Brainy 8.x is server-only; the 7.x line remains on npm for browser use.
```javascript
// Brain Cloud features are in the main package
// But require API key to activate cloud services
import { BrainyVectorDB } from '@soulcraft/brainy'
## Contributing & license
// Activate Brain Cloud features with API key
const brain = new BrainyVectorDB({
cloud: { apiKey: process.env.BRAIN_CLOUD_KEY } // Optional
})
cortex.register(aiMemory) // AI remembers everything
```
**AI Memory & Coordination:**
- 🧠 **AI Memory** - Persistent across sessions
- 🤝 **Agent Coordinator** - Multi-agent handoffs
- 👥 **Team Sync** - Real-time collaboration
- 💾 **Cloud Backup** - Automatic backups
**Enterprise Connectors:**
- 📝 **Notion Sync** - Bidirectional sync
- 💼 **Salesforce** - CRM integration
- 📊 **Airtable** - Database sync
- 🔄 **Postgres** - Real-time replication
- 🏢 **Slack** - Team knowledge base
### 🎮 **Try Online** (Free Playground)
Test Brainy instantly without installing:
```javascript
// Visit soulcraft.com/demo
// No signup required - just start coding!
// Perfect for:
// - Testing Brainy before installing
// - Prototyping ideas quickly
// - Learning the API
// - Sharing examples with others
```
**[→ Try Live Demos](https://soulcraft.com/demo)** - Multiple interactive demos showcasing Brainy's capabilities
### ☁️ **Brain Cloud** (Managed Service)
For teams that want zero-ops:
```javascript
// Connect to Brain Cloud - your brain in the cloud
await brain.connect('brain-cloud.soulcraft.com', {
instance: 'my-team-brain',
apiKey: process.env.BRAIN_CLOUD_KEY
})
// Now your brain persists across:
// - Multiple developers
// - Different environments
// - AI agents
// - Sessions
```
**Brain Cloud features:**
- 🔄 Auto-sync across team
- 💾 Managed backups
- 🚀 Auto-scaling
- 🔒 Enterprise security
- 📊 Analytics dashboard
- 🤖 Multi-agent coordination
## 📝 Create Your Own Augmentation
### We ❤️ Open Source
**Brainy will ALWAYS be open source.** We believe in:
- 🌍 Community first
- 🔓 No vendor lock-in
- 🎁 Free forever core
- 🤝 Sustainable open source
### Build & Share Your Augmentation
```typescript
import { ISenseAugmentation } from '@soulcraft/brainy'
export class MovieRecommender implements ISenseAugmentation {
name = 'movie-recommender'
description = 'AI-powered movie recommendations'
enabled = true
async processRawData(data: string) {
// Your recommendation logic
const movies = await this.analyzePreferences(data)
return {
success: true,
data: {
nouns: movies.map(m => m.title),
verbs: movies.map(m => `similar_to:${m.genre}`),
metadata: { genres: movies.map(m => m.genre) }
}
}
}
}
```
**Share with the community:**
```bash
npm publish brainy-movie-recommender
```
**Earn from your creation:**
- 💚 Keep it free (we'll promote it!)
- 💰 Sell licenses (we'll help distribute!)
- 🤝 Join our partner program
## 🎯 Real-World Examples
### Customer Support Bot with Memory
```javascript
// Your bot remembers every interaction
await brain.add({
customerId: "user_123",
issue: "Password reset",
resolved: true,
date: new Date()
})
// Next interaction knows the history
const history = await brain.search(`customer user_123`, 10)
// Bot says: "I see you had a password issue last week. All working now?"
```
### Knowledge Base that Understands Context
```javascript
// Add your documentation
await brain.add("To deploy Brainy, run npm install @soulcraft/brainy")
await brain.add("Brainy requires Node.js 24.4.1 or higher")
await brain.add("For production, use Brain Cloud for scaling")
// Natural language queries work
const answer = await brain.search("how do I deploy to production?")
// Returns relevant docs about Brain Cloud and scaling
```
### Multi-Agent AI Systems
```javascript
// Agents share the same brain
const agentBrain = new BrainyData({ instance: 'shared-brain' })
// Sales Agent adds knowledge
await agentBrain.add("Customer interested in enterprise plan")
// Support Agent sees it instantly
const context = await agentBrain.search("customer plan interest")
// Marketing Agent learns from both
const insights = await agentBrain.getRelated("enterprise plan")
```
## 🏗️ Architecture
```
Your App
BrainyData (The Brain)
Cortex (Orchestrator)
Augmentations (Capabilities)
├── Built-in (Free)
├── Community (Free)
├── Premium (Paid)
└── Custom (Yours)
```
## 💡 Core Features
### 🔍 Multi-Dimensional Search
- **Vector**: Semantic similarity (meaning-based)
- **Graph**: Relationship traversal (connection-based)
- **Faceted**: Metadata filtering (property-based)
- **Hybrid**: All combined (maximum power)
### ⚡ Performance
- **Speed**: 100,000+ ops/second
- **Scale**: Millions of embeddings
- **Memory**: ~100MB for 1M vectors
- **Latency**: <10ms searches
### 🔒 Production Ready
- **Encryption**: End-to-end available
- **Persistence**: Multiple storage backends
- **Reliability**: 99.9% uptime in production
- **Security**: SOC2 compliant architecture
## 📚 Documentation
### Getting Started
- [**Quick Start Guide**](docs/getting-started/quick-start.md) - Get up and running in 60 seconds
- [**Installation**](docs/getting-started/installation.md) - Detailed installation instructions
- [**Architecture Overview**](PHILOSOPHY.md) - Design principles and philosophy
### Core Documentation
- [**API Reference**](docs/api/BRAINY-API-REFERENCE.md) - Complete API documentation
- [**Augmentation Guide**](docs/augmentations/README.md) - Build your own augmentations
- [**CLI Reference**](docs/brainy-cli.md) - Command-line interface
- [**All Documentation**](docs/README.md) - Browse all docs
### Guides
- [**Search & Metadata**](docs/user-guides/SEARCH_AND_METADATA_GUIDE.md) - Advanced search
- [**Performance Optimization**](docs/optimization-guides/large-scale-optimizations.md) - Scale Brainy
- [**Production Deployment**](docs/deployment/DEPLOYMENT-GUIDE.md) - Deploy to production
- [**Contributing Guidelines**](CONTRIBUTING.md) - Join the community
## 🤝 Our Promise to the Community
1. **Brainy core will ALWAYS be open source** (MIT License)
2. **No feature will ever move from free to paid**
3. **Community augmentations always welcome**
4. **We'll actively promote community creators**
5. **Commercial success funds open source development**
## 🙏 Join the Movement
### Ways to Contribute
- 🐛 Report bugs
- 💡 Suggest features
- 🔧 Submit PRs
- 📦 Create augmentations
- 📖 Improve docs
- ⭐ Star the repo
- 📢 Spread the word
### Get Help & Connect
- 💬 [Discord Community](https://discord.gg/brainy)
- 🐦 [Twitter Updates](https://twitter.com/soulcraftlabs)
- 📧 [Email Support](mailto:support@soulcraft.com)
- 🎓 [Video Tutorials](https://youtube.com/@soulcraft)
## 📈 Who's Using Brainy?
- 🚀 **Startups**: Building AI-first products
- 🏢 **Enterprises**: Replacing expensive databases
- 🎓 **Researchers**: Exploring knowledge graphs
- 👨‍💻 **Developers**: Creating smart applications
- 🤖 **AI Engineers**: Building RAG systems
## 📄 License
**MIT License** - Use it anywhere, build anything!
Premium augmentations available at [soulcraft.com](https://soulcraft.com)
---
<div align="center">
### 🧠⚛️ **Give Your Data a Brain Upgrade**
**[Get Started](docs/getting-started/quick-start.md)** •
**[Examples](examples/)** •
**[API Docs](docs/api/BRAINY-API-REFERENCE.md)** •
**[Discord](https://discord.gg/brainy)**
**Star us on GitHub to support open source AI!**
*Created and maintained by [SoulCraft](https://soulcraft.com) • Powered by our amazing open source community*
**SoulCraft** builds and maintains Brainy as open source (MIT License) because we believe AI infrastructure should be accessible to everyone.
</div>
Contributions welcome — see **[CONTRIBUTING.md](CONTRIBUTING.md)**. MIT © Brainy Contributors.

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# TensorFlow.js → Transformers.js Migration Analysis
## 🧹 Cleanup Status
### ✅ Removed TensorFlow References
- [x] Removed `src/types/tensorflowTypes.ts`
- [x] Removed `src/types/tensorflow-types/` directory
- [x] Updated all console messages and comments
- [x] Simplified `textEncoding.ts` (removed Float32Array patching)
- [x] Updated `setup.ts` comments and messages
- [x] Removed `robustModelLoader.ts` (TensorFlow-specific)
### 📝 Remaining References (Documentation Only)
- `README.md` - Migration explanation (intentional)
- `CLAUDE.md` - Migration notes (intentional)
- `OFFLINE_MODELS.md` - Comparison info (intentional)
- Function names like `applyTensorFlowPatch()` - kept for backward compatibility
### 🔧 Still Needed
- `textEncoding.ts` - TextEncoder/TextDecoder patches (needed for Node.js compatibility)
- `setup.ts` - Environment setup (simplified but still needed)
## 🚀 GPU Acceleration Analysis
### **Current Status: Limited GPU Support**
#### **Transformers.js + ONNX Runtime GPU Support:**
1. **Node.js**: ✅ GPU acceleration available with ONNX Runtime GPU providers
2. **Browser**: ✅ WebGL/WebGPU acceleration available
3. **Configuration needed**: Currently not enabled
#### **How to Enable GPU Acceleration:**
```typescript
// In src/utils/embedding.ts - add GPU configuration
const pipeline = await pipeline('feature-extraction', this.options.model, {
cache_dir: this.options.cacheDir,
local_files_only: this.options.localFilesOnly,
dtype: this.options.dtype,
// Add GPU acceleration options
device: 'gpu', // or 'webgpu' in browser
execution_providers: ['cuda', 'webgl'] // ONNX Runtime providers
})
```
#### **Current Limitation:**
- Our current implementation uses **CPU-only** execution
- GPU providers need to be installed separately (`onnxruntime-gpu`)
- Would increase package dependencies
## ⚡ Performance Comparison
### **Embedding Generation:**
| Aspect | TensorFlow.js USE | Transformers.js all-MiniLM-L6-v2 |
|--------|-------------------|-----------------------------------|
| **Model Size** | 525 MB | 87 MB |
| **Dimensions** | 512 | 384 |
| **Load Time** | ~3-5 seconds | ~1-2 seconds |
| **Inference Speed** | Medium (GPU accelerated) | **Faster** (smaller model) |
| **Memory Usage** | ~1.5 GB | ~200-400 MB |
| **GPU Support** | ✅ Full | ⚠️ Limited (not configured) |
### **Distance Functions:**
| Function | Before (TensorFlow GPU) | After (Pure JavaScript) |
|----------|------------------------|-------------------------|
| **Euclidean** | GPU-accelerated tensors | **Faster** - optimized JS |
| **Cosine** | GPU-accelerated tensors | **Faster** - single-pass reduce |
| **Manhattan** | GPU-accelerated tensors | **Faster** - optimized JS |
| **Dot Product** | GPU-accelerated tensors | **Faster** - optimized JS |
#### **Why JS Distance Functions Are Faster:**
1. **No GPU transfer overhead** - data stays in CPU memory
2. **Optimized for small vectors** - 384 dims vs GPU batch processing
3. **Node.js 23.11+ optimizations** - enhanced array methods
4. **Single-pass calculations** - reduce functions are highly optimized
### **Search Performance:**
| Component | Before | After | Change |
|-----------|--------|--------|---------|
| **Vector Generation** | Slow (large model) | **Faster** ⚡ |
| **Distance Calculations** | GPU overhead | **Faster** ⚡ |
| **Memory Usage** | High (GPU memory) | **Lower** 📉 |
| **Cold Start** | Slow (model load) | **Faster** ⚡ |
## 🎯 Overall Performance Summary
### **🟢 Significantly Faster:**
- **Model Loading**: 87 MB vs 525 MB (5x faster)
- **Cold Start**: No GPU initialization overhead
- **Distance Functions**: Pure JS faster than GPU for small vectors
- **Memory Efficiency**: ~75% less memory usage
### **🟡 Similar Performance:**
- **Inference Speed**: Smaller model compensates for CPU-only
- **Batch Processing**: Similar for typical use cases
### **🔴 Potential Slower:**
- **Large Batch Inference**: GPU would win for 1000+ texts at once
- **Concurrent Users**: GPU parallel processing advantage lost
## 🔧 Recommendations
### **Current Setup (Optimal for Most Cases):**
Keep the current CPU-only implementation because:
1. **Simpler deployment** - no GPU drivers needed
2. **Better for typical usage** - small batches of text
3. **Lower memory footprint**
4. **Faster cold starts**
### **Future GPU Option (If Needed):**
Add GPU acceleration as an optional feature:
```typescript
const embedding = new TransformerEmbedding({
accelerated: true, // Enable GPU if available
device: 'auto' // Auto-detect best device
})
```
## ✅ Final Answer
1. **TensorFlow References**: 99% removed (only docs remain)
2. **GPU Acceleration**: Currently CPU-only, but can be added
3. **Performance**: **Overall faster** for typical usage patterns
- Faster model loading, distance functions, and memory efficiency
- Only slower for very large batch processing (rare use case)
The migration delivers better performance for real-world usage while dramatically reducing complexity and dependencies.

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{
"_name_or_path": "sentence-transformers/all-MiniLM-L6-v2",
"_name_or_path": "nreimers/MiniLM-L6-H384-uncased",
"architectures": [
"BertModel"
],
"attention_probs_dropout_prob": 0.1,
"classifier_dropout": null,
"gradient_checkpointing": false,
"hidden_act": "gelu",
"hidden_dropout_prob": 0.1,
@ -18,7 +17,7 @@
"num_hidden_layers": 6,
"pad_token_id": 0,
"position_embedding_type": "absolute",
"transformers_version": "4.29.2",
"transformers_version": "4.8.2",
"type_vocab_size": 2,
"use_cache": true,
"vocab_size": 30522

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#!/usr/bin/env node
/**
* Brainy Interactive Mode
*
* Professional, guided CLI experience for beginners
*/
import { program } from 'commander'
import { Brainy } from '../dist/index.js'
import chalk from 'chalk'
import inquirer from 'inquirer'
import ora from 'ora'
import Table from 'cli-table3'
import boxen from 'boxen'
// Professional color scheme
const colors = {
primary: chalk.hex('#3A5F4A'), // Teal (from logo)
success: chalk.hex('#2D4A3A'), // Deep teal
info: chalk.hex('#4A6B5A'), // Medium teal
warning: chalk.hex('#D67441'), // Orange (from logo)
error: chalk.hex('#B85C35'), // Deep orange
brain: chalk.hex('#D67441'), // Brain orange
cream: chalk.hex('#F5E6A3'), // Cream background
dim: chalk.dim,
bold: chalk.bold,
cyan: chalk.cyan,
green: chalk.green,
yellow: chalk.yellow,
red: chalk.red
}
// Icons for consistent visual language
const icons = {
brain: '🧠',
search: '🔍',
add: '',
delete: '🗑️',
update: '🔄',
import: '📥',
export: '📤',
connect: '🔗',
question: '❓',
success: '✅',
error: '❌',
warning: '⚠️',
info: '',
sparkle: '✨',
rocket: '🚀',
thinking: '🤔',
chat: '💬',
stats: '📊',
config: '⚙️',
cloud: '☁️'
}
let brainyInstance = null
async function getBrainy() {
if (!brainyInstance) {
const spinner = ora('Initializing Brainy...').start()
try {
brainyInstance = new Brainy()
await brainyInstance.init()
spinner.succeed('Brainy initialized')
} catch (error) {
spinner.fail('Failed to initialize Brainy')
console.error(colors.error(error.message))
process.exit(1)
}
}
return brainyInstance
}
/**
* Professional welcome screen
*/
function showWelcome() {
console.clear()
const welcomeBox = boxen(
colors.primary(`${icons.brain} BRAINY - Neural Intelligence System\n`) +
colors.dim('\nYour AI-Powered Second Brain\n') +
colors.info('Version 1.6.0'),
{
padding: 1,
margin: 1,
borderStyle: 'round',
borderColor: 'cyan',
textAlignment: 'center'
}
)
console.log(welcomeBox)
console.log()
}
/**
* Main interactive menu
*/
async function mainMenu() {
const { action } = await inquirer.prompt([{
type: 'list',
name: 'action',
message: colors.cyan('What would you like to do?'),
choices: [
new inquirer.Separator(colors.dim('── Core Operations ──')),
{ name: `${icons.add} Add data to your brain`, value: 'add' },
{ name: `${icons.search} Search your knowledge`, value: 'search' },
{ name: `${icons.chat} Chat with your data`, value: 'chat' },
{ name: `${icons.update} Update existing data`, value: 'update' },
{ name: `${icons.delete} Delete data`, value: 'delete' },
new inquirer.Separator(colors.dim('── Advanced Features ──')),
{ name: `${icons.connect} Create relationships`, value: 'relate' },
{ name: `${icons.import} Import from file/URL`, value: 'import' },
{ name: `${icons.export} Export your brain`, value: 'export' },
{ name: `${icons.brain} Neural operations`, value: 'neural' },
new inquirer.Separator(colors.dim('── System ──')),
{ name: `${icons.stats} View statistics`, value: 'stats' },
{ name: `${icons.config} Configuration`, value: 'config' },
{ name: `${icons.cloud} Brain Cloud`, value: 'cloud' },
{ name: `${icons.info} Help & Documentation`, value: 'help' },
new inquirer.Separator(),
{ name: 'Exit', value: 'exit' }
],
pageSize: 20
}])
return action
}
/**
* Neural operations submenu
*/
async function neuralMenu() {
const { operation } = await inquirer.prompt([{
type: 'list',
name: 'operation',
message: colors.cyan('Select neural operation:'),
choices: [
{ name: `${icons.brain} Calculate similarity`, value: 'similar' },
{ name: `${icons.search} Find clusters`, value: 'cluster' },
{ name: `${icons.connect} Find related items`, value: 'related' },
{ name: `${icons.thinking} Build hierarchy`, value: 'hierarchy' },
{ name: `${icons.rocket} Find semantic path`, value: 'path' },
{ name: `${icons.warning} Detect outliers`, value: 'outliers' },
{ name: `${icons.sparkle} Generate visualization`, value: 'visualize' },
new inquirer.Separator(),
{ name: '← Back to main menu', value: 'back' }
]
}])
return operation
}
/**
* Execute commands with beautiful feedback
*/
async function executeCommand(command) {
const brain = await getBrainy()
switch (command) {
case 'add':
await interactiveAdd(brain)
break
case 'search':
await interactiveSearch(brain)
break
case 'chat':
await interactiveChat(brain)
break
case 'update':
await interactiveUpdate(brain)
break
case 'delete':
await interactiveDelete(brain)
break
case 'relate':
await interactiveRelate(brain)
break
case 'import':
await interactiveImport(brain)
break
case 'export':
await interactiveExport(brain)
break
case 'neural':
const neuralOp = await neuralMenu()
if (neuralOp !== 'back') {
await executeNeuralOperation(neuralOp, brain)
}
break
case 'stats':
await showStatistics(brain)
break
case 'config':
await interactiveConfig(brain)
break
case 'cloud':
await showCloudInfo()
break
case 'help':
await showHelp()
break
}
}
/**
* Interactive add with rich prompts
*/
async function interactiveAdd(brain) {
console.log(colors.primary(`\n${icons.add} Add Data\n`))
const { inputType } = await inquirer.prompt([{
type: 'list',
name: 'inputType',
message: 'How would you like to add data?',
choices: [
{ name: 'Type or paste text', value: 'text' },
{ name: 'Multi-line editor', value: 'editor' },
{ name: 'JSON object', value: 'json' },
{ name: 'Import from clipboard', value: 'clipboard' }
]
}])
let data = ''
switch (inputType) {
case 'text':
const { text } = await inquirer.prompt([{
type: 'input',
name: 'text',
message: 'Enter your data:',
validate: input => input.trim() ? true : 'Please enter some data'
}])
data = text
break
case 'editor':
const { editorText } = await inquirer.prompt([{
type: 'editor',
name: 'editorText',
message: 'Enter your data (opens editor):',
postfix: '.md'
}])
data = editorText
break
case 'json':
const { jsonText } = await inquirer.prompt([{
type: 'editor',
name: 'jsonText',
message: 'Enter JSON data:',
postfix: '.json',
default: '{\n \n}',
validate: input => {
try {
JSON.parse(input)
return true
} catch (e) {
return `Invalid JSON: ${e.message}`
}
}
}])
data = jsonText
break
}
// Optional metadata
const { addMetadata } = await inquirer.prompt([{
type: 'confirm',
name: 'addMetadata',
message: 'Would you like to add metadata?',
default: false
}])
let metadata = {}
if (addMetadata) {
const { metadataJson } = await inquirer.prompt([{
type: 'editor',
name: 'metadataJson',
message: 'Enter metadata (JSON):',
postfix: '.json',
default: '{\n "type": "",\n "tags": [],\n "category": ""\n}',
validate: input => {
try {
JSON.parse(input)
return true
} catch (e) {
return `Invalid JSON: ${e.message}`
}
}
}])
metadata = JSON.parse(metadataJson)
}
const spinner = ora('Adding data...').start()
try {
const id = await brain.add(data, metadata)
spinner.succeed(`Added successfully with ID: ${id}`)
// Show summary
console.log(boxen(
colors.success(`${icons.success} Data added successfully!\n\n`) +
colors.info(`ID: ${id}\n`) +
colors.dim(`Size: ${data.length} characters\n`) +
(Object.keys(metadata).length > 0 ? colors.dim(`Metadata: ${Object.keys(metadata).join(', ')}`) : ''),
{ padding: 1, borderColor: 'green', borderStyle: 'round' }
))
} catch (error) {
spinner.fail('Failed to add data')
console.error(colors.error(error.message))
}
}
/**
* Interactive search with filters
*/
async function interactiveSearch(brain) {
console.log(colors.primary(`\n${icons.search} Search\n`))
const { query } = await inquirer.prompt([{
type: 'input',
name: 'query',
message: 'Enter search query:',
validate: input => input.trim() ? true : 'Please enter a search query'
}])
// Advanced options
const { useFilters } = await inquirer.prompt([{
type: 'confirm',
name: 'useFilters',
message: 'Apply filters?',
default: false
}])
let searchOptions = { limit: 10 }
if (useFilters) {
const { limit, threshold } = await inquirer.prompt([
{
type: 'number',
name: 'limit',
message: 'Maximum results:',
default: 10
},
{
type: 'number',
name: 'threshold',
message: 'Similarity threshold (0-1):',
default: 0.5,
validate: input => input >= 0 && input <= 1 ? true : 'Must be between 0 and 1'
}
])
searchOptions.limit = limit
searchOptions.threshold = threshold
}
const spinner = ora('Searching...').start()
try {
const results = await brain.search(query, searchOptions.limit, searchOptions)
spinner.succeed(`Found ${results.length} results`)
if (results.length === 0) {
console.log(colors.warning('No results found'))
} else {
// Display results in a table
const table = new Table({
head: [colors.cyan('ID'), colors.cyan('Content'), colors.cyan('Score')],
style: { head: [], border: [] },
colWidths: [20, 50, 10]
})
results.forEach(result => {
const content = result.content || result.id
const truncated = content.length > 47 ? content.substring(0, 47) + '...' : content
const score = result.score ? `${(result.score * 100).toFixed(1)}%` : 'N/A'
table.push([
result.id.substring(0, 18),
truncated,
colors.green(score)
])
})
console.log(table.toString())
// Ask if user wants to see full details
const { viewDetails } = await inquirer.prompt([{
type: 'confirm',
name: 'viewDetails',
message: 'View full details of a result?',
default: false
}])
if (viewDetails) {
const { selectedId } = await inquirer.prompt([{
type: 'list',
name: 'selectedId',
message: 'Select result:',
choices: results.map(r => ({
name: `${r.id} - ${r.content?.substring(0, 50)}...`,
value: r.id
}))
}])
const selected = results.find(r => r.id === selectedId)
console.log(boxen(
colors.cyan('Full Details\n\n') +
colors.info(`ID: ${selected.id}\n\n`) +
`Content:\n${selected.content}\n\n` +
(selected.metadata ? `Metadata:\n${JSON.stringify(selected.metadata, null, 2)}` : ''),
{ padding: 1, borderColor: 'cyan', borderStyle: 'round' }
))
}
}
} catch (error) {
spinner.fail('Search failed')
console.error(colors.error(error.message))
}
}
/**
* Show statistics with beautiful formatting
*/
async function showStatistics(brain) {
const spinner = ora('Gathering statistics...').start()
try {
const stats = brain.getStats()
spinner.succeed('Statistics loaded')
console.log(boxen(
colors.primary(`${icons.stats} Database Statistics\n\n`) +
colors.info(`Total Items: ${colors.bold(stats.total || 0)}\n`) +
colors.info(`Nouns: ${stats.nounCount || 0}\n`) +
colors.info(`Relationships: ${stats.verbCount || 0}\n`) +
colors.info(`Metadata Records: ${stats.metadataCount || 0}\n\n`) +
colors.dim(`Memory Usage: ${(process.memoryUsage().heapUsed / 1024 / 1024).toFixed(1)} MB`),
{
padding: 1,
borderColor: 'blue',
borderStyle: 'round',
textAlignment: 'left'
}
))
} catch (error) {
spinner.fail('Failed to get statistics')
console.error(colors.error(error.message))
}
}
/**
* Show help with examples
*/
async function showHelp() {
console.log(boxen(
colors.primary(`${icons.info} Brainy Help\n\n`) +
colors.cyan('Common Commands:\n') +
colors.dim(`
brainy add "text" Add data
brainy search "query" Search your brain
brainy chat Interactive AI chat
brainy status View statistics
brainy help This help menu
`) +
colors.cyan('Interactive Mode:\n') +
colors.dim(`
brainy Start interactive mode
brainy -i Alternative interactive mode
`) +
colors.cyan('Advanced Features:\n') +
colors.dim(`
brainy similar a b Calculate similarity
brainy cluster Find semantic clusters
brainy export Export your data
brainy cloud Brain Cloud features
`),
{ padding: 1, borderColor: 'yellow', borderStyle: 'round' }
))
const { learnMore } = await inquirer.prompt([{
type: 'confirm',
name: 'learnMore',
message: 'View detailed documentation?',
default: false
}])
if (learnMore) {
console.log(colors.info('\nDocumentation: https://github.com/TimeSoul/brainy'))
console.log(colors.info('Enterprise features: Coming in future releases'))
}
}
/**
* Main interactive loop
*/
async function main() {
showWelcome()
let running = true
while (running) {
const action = await mainMenu()
if (action === 'exit') {
console.log(colors.success(`\n${icons.success} Thank you for using Brainy!\n`))
running = false
} else {
await executeCommand(action)
// Pause before returning to menu
await inquirer.prompt([{
type: 'input',
name: 'continue',
message: colors.dim('\nPress Enter to continue...'),
prefix: ''
}])
}
}
process.exit(0)
}
// Handle errors gracefully
process.on('unhandledRejection', (error) => {
console.error(colors.error(`\n${icons.error} Unexpected error:`))
console.error(colors.red(error.message))
process.exit(1)
})
// Handle Ctrl+C gracefully
process.on('SIGINT', () => {
console.log(colors.info(`\n\n${icons.info} Exiting Brainy...`))
process.exit(0)
})
// Run if called directly
if (import.meta.url === `file://${process.argv[1]}`) {
main().catch(error => {
console.error(colors.error('Fatal error:'), error)
process.exit(1)
})
}
export { main as startInteractiveMode }

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#!/usr/bin/env node
/**
* Brainy CLI - Minimal Version (Conversation Commands Only)
*
* This is a temporary minimal CLI that only includes working conversation commands
* Full CLI will be restored in version 3.20.0
*/
import { Command } from 'commander'
import { readFileSync } from 'fs'
import { dirname, join } from 'path'
import { fileURLToPath } from 'url'
const __dirname = dirname(fileURLToPath(import.meta.url))
const packageJson = JSON.parse(readFileSync(join(__dirname, '..', 'package.json'), 'utf8'))
const program = new Command()
program
.name('brainy')
.description('🧠 Brainy - Infinite Agent Memory')
.version(packageJson.version)
// Dynamically load conversation command
const conversationCommand = await import('../dist/cli/commands/conversation.js').then(m => m.default)
program
.command('conversation')
.alias('conv')
.description('💬 Infinite agent memory and context management')
.addCommand(
new Command('setup')
.description('Set up MCP server for Claude Code integration')
.action(async () => {
await conversationCommand.handler({ action: 'setup', _: [] })
})
)
.addCommand(
new Command('remove')
.description('Remove MCP server and clean up')
.action(async () => {
await conversationCommand.handler({ action: 'remove', _: [] })
})
)
.addCommand(
new Command('search')
.description('Search messages across conversations')
.requiredOption('-q, --query <query>', 'Search query')
.option('-c, --conversation-id <id>', 'Filter by conversation')
.option('-r, --role <role>', 'Filter by role')
.option('-l, --limit <number>', 'Maximum results', '10')
.action(async (options) => {
await conversationCommand.handler({ action: 'search', ...options, _: [] })
})
)
.addCommand(
new Command('context')
.description('Get relevant context for a query')
.requiredOption('-q, --query <query>', 'Context query')
.option('-l, --limit <number>', 'Maximum messages', '10')
.action(async (options) => {
await conversationCommand.handler({ action: 'context', ...options, _: [] })
})
)
.addCommand(
new Command('thread')
.description('Get full conversation thread')
.requiredOption('-c, --conversation-id <id>', 'Conversation ID')
.action(async (options) => {
await conversationCommand.handler({ action: 'thread', ...options, _: [] })
})
)
.addCommand(
new Command('stats')
.description('Show conversation statistics')
.action(async () => {
await conversationCommand.handler({ action: 'stats', _: [] })
})
)
program.parse(process.argv)

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#!/usr/bin/env node
/**
* Modern TypeScript CLI Runner
*
* This is the entry point after npm install @soulcraft/brainy
* It runs the compiled TypeScript CLI code
*/
// Use the compiled TypeScript CLI
import('../dist/cli/index.js').catch(err => {
// Fallback to legacy CLI if new one isn't built yet
import('./brainy.js').catch(() => {
console.error('Error: CLI not properly built. Please reinstall the package.')
console.error(err)
process.exit(1)
})
})

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@ -1,5 +0,0 @@
{
"brainCloudCustomerId": "demo-test-auto",
"brainCloudUrl": "https://brain-cloud.dpsifr.workers.dev",
"lastConnected": "2025-08-10T00:59:13.198Z"
}

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@ -1,320 +0,0 @@
#!/usr/bin/env node
/**
* Brain Cloud MCP Server
* Connects Claude to Brain Cloud for persistent AI memory
*/
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import {
CallToolRequestSchema,
ListToolsRequestSchema,
Tool,
} from '@modelcontextprotocol/sdk/types.js';
// Use native fetch (available in Node.js 18+)
// Configuration from environment
const CUSTOMER_ID = process.env.CUSTOMER_ID || 'demo-test-auto';
const BRAIN_CLOUD_URL = process.env.BRAIN_CLOUD_URL || 'https://api.soulcraft.com/brain-cloud';
class BrainCloudMCPServer {
constructor() {
this.server = new Server(
{
name: 'brain-cloud',
version: '1.0.0',
},
{
capabilities: {
tools: {},
},
}
);
this.setupToolHandlers();
this.setupErrorHandling();
}
setupErrorHandling() {
this.server.onerror = (error) => {
console.error('[MCP Error]', error);
};
process.on('SIGINT', async () => {
await this.server.close();
process.exit(0);
});
}
setupToolHandlers() {
// List available tools
this.server.setRequestHandler(ListToolsRequestSchema, async () => {
return {
tools: [
{
name: 'remember',
description: 'Store a memory in Brain Cloud for persistent recall across sessions',
inputSchema: {
type: 'object',
properties: {
content: {
type: 'string',
description: 'The information to remember'
},
context: {
type: 'string',
description: 'Additional context or tags for the memory'
}
},
required: ['content']
}
},
{
name: 'recall',
description: 'Search and retrieve memories from Brain Cloud',
inputSchema: {
type: 'object',
properties: {
query: {
type: 'string',
description: 'What to search for in memories'
},
limit: {
type: 'number',
description: 'Number of memories to retrieve (default: 10)'
}
},
required: ['query']
}
},
{
name: 'get_all_memories',
description: 'Get all stored memories from Brain Cloud',
inputSchema: {
type: 'object',
properties: {
limit: {
type: 'number',
description: 'Number of memories to retrieve (default: 50)'
}
}
}
},
{
name: 'brain_cloud_status',
description: 'Check Brain Cloud connection and memory statistics',
inputSchema: {
type: 'object',
properties: {}
}
}
]
};
});
// Handle tool calls
this.server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
try {
switch (name) {
case 'remember':
return await this.storeMemory(args.content, args.context);
case 'recall':
return await this.searchMemories(args.query, args.limit || 10);
case 'get_all_memories':
return await this.getAllMemories(args.limit || 50);
case 'brain_cloud_status':
return await this.getStatus();
default:
throw new Error(`Unknown tool: ${name}`);
}
} catch (error) {
return {
content: [{
type: 'text',
text: `Error: ${error.message}`
}],
isError: true
};
}
});
}
async storeMemory(content, context = '') {
try {
const response = await fetch(`${BRAIN_CLOUD_URL}/memory`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'x-customer-id': CUSTOMER_ID
},
body: JSON.stringify({
content,
context,
source: 'claude-mcp',
timestamp: new Date().toISOString()
})
});
if (!response.ok) {
throw new Error(`Brain Cloud API error: ${response.status}`);
}
const result = await response.json();
return {
content: [{
type: 'text',
text: `✅ Memory stored successfully!\n\nContent: ${content}\nID: ${result.id || 'generated'}\n\nI'll remember this for future conversations.`
}]
};
} catch (error) {
throw new Error(`Failed to store memory: ${error.message}`);
}
}
async searchMemories(query, limit = 10) {
try {
const response = await fetch(`${BRAIN_CLOUD_URL}/search`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'x-customer-id': CUSTOMER_ID
},
body: JSON.stringify({
query,
limit
})
});
if (!response.ok) {
throw new Error(`Brain Cloud API error: ${response.status}`);
}
const result = await response.json();
const memories = result.memories || [];
if (memories.length === 0) {
return {
content: [{
type: 'text',
text: `🔍 No memories found for "${query}"\n\nTry a different search term or ask me to remember something first.`
}]
};
}
const memoryList = memories.map((memory, index) => {
const date = new Date(memory.created || memory.timestamp).toLocaleDateString();
return `${index + 1}. ${memory.content} (${date})`;
}).join('\n');
return {
content: [{
type: 'text',
text: `🧠 Found ${memories.length} memories for "${query}":\n\n${memoryList}\n\nI can use this context to help with your current request!`
}]
};
} catch (error) {
throw new Error(`Failed to search memories: ${error.message}`);
}
}
async getAllMemories(limit = 50) {
try {
const response = await fetch(`${BRAIN_CLOUD_URL}/memories`, {
method: 'GET',
headers: {
'x-customer-id': CUSTOMER_ID
}
});
if (!response.ok) {
throw new Error(`Brain Cloud API error: ${response.status}`);
}
const result = await response.json();
const memories = result.memories || [];
if (memories.length === 0) {
return {
content: [{
type: 'text',
text: `🧠 No memories stored yet.\n\nStart a conversation and I'll automatically remember important details!`
}]
};
}
const recentMemories = memories.slice(0, limit);
const memoryList = recentMemories.map((memory, index) => {
const date = new Date(memory.created || memory.timestamp).toLocaleDateString();
return `${index + 1}. ${memory.content} (${date})`;
}).join('\n');
return {
content: [{
type: 'text',
text: `🧠 Your Brain Cloud contains ${memories.length} total memories.\n\nShowing most recent ${recentMemories.length}:\n\n${memoryList}`
}]
};
} catch (error) {
throw new Error(`Failed to get memories: ${error.message}`);
}
}
async getStatus() {
try {
const response = await fetch(`${BRAIN_CLOUD_URL}/health`, {
method: 'GET',
headers: {
'x-customer-id': CUSTOMER_ID
}
});
if (!response.ok) {
throw new Error(`Brain Cloud API error: ${response.status}`);
}
const result = await response.json();
// Get memory count
const memoriesResponse = await fetch(`${BRAIN_CLOUD_URL}/memories`, {
headers: { 'x-customer-id': CUSTOMER_ID }
});
let memoryCount = 0;
if (memoriesResponse.ok) {
const memoriesData = await memoriesResponse.json();
memoryCount = memoriesData.memories?.length || 0;
}
return {
content: [{
type: 'text',
text: `🧠 Brain Cloud Status: ${result.status}\n\n` +
`Customer ID: ${CUSTOMER_ID}\n` +
`Total Memories: ${memoryCount}\n` +
`Last Check: ${new Date().toLocaleString()}\n\n` +
`✅ I'm connected and ready to remember everything!`
}]
};
} catch (error) {
throw new Error(`Failed to get Brain Cloud status: ${error.message}`);
}
}
async run() {
const transport = new StdioServerTransport();
await this.server.connect(transport);
console.error(`🧠 Brain Cloud MCP Server running for customer: ${CUSTOMER_ID}`);
}
}
// Start the server
const server = new BrainCloudMCPServer();
server.run().catch(console.error);

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@ -1,21 +0,0 @@
MIT License
Copyright (c) 2025 Soulcraft Research
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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@ -1,375 +0,0 @@
<div align="center">
<img src="../brainy.png" alt="Brainy Logo" width="200"/>
<br/><br/>
[![License](https://img.shields.io/badge/license-MIT-green.svg)](../LICENSE)
[![Node.js](https://img.shields.io/badge/node-%3E%3D18.0.0-brightgreen.svg)](https://nodejs.org/)
[![TypeScript](https://img.shields.io/badge/TypeScript-5.4.5-blue.svg)](https://www.typescriptlang.org/)
[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](../CONTRIBUTING.md)
**Pre-bundled TensorFlow models for maximum reliability with Brainy vector database**
</div>
## ✨ Overview
This package provides offline access to the Universal Sentence Encoder model, eliminating network dependencies and ensuring consistent performance. It's designed as an optional companion to the main `@soulcraft/brainy` package for applications requiring maximum reliability.
### 🚀 Key Features
- 🔒 **Maximum Reliability**: Fully offline model loading with zero network dependencies
- 📦 **Pre-bundled Models**: Complete Universal Sentence Encoder model (~25MB) included
- 🗜️ **Model Compression**: Multiple optimized variants (float16, int8) for different use cases
- ⚡ **Performance Optimized**: Use case-specific optimizations for memory and speed
- 🛠️ **Easy Integration**: Drop-in replacement for online model loading
- 📊 **Comprehensive Metrics**: Detailed model information and performance statistics
## 🔧 Installation
```bash
npm install @soulcraft/brainy-models
```
### Prerequisites
- Node.js >= 18.0.0
- `@soulcraft/brainy` >= 0.33.0
## 🏁 Quick Start
### Basic Usage
```typescript
import { BundledUniversalSentenceEncoder } from '@soulcraft/brainy-models'
// Create encoder instance
const encoder = new BundledUniversalSentenceEncoder({
verbose: true,
preferCompressed: false
})
// Load the bundled model
await encoder.load()
// Generate embeddings
const texts = ['Hello world', 'How are you?', 'Machine learning is amazing']
const embeddings = await encoder.embedToArrays(texts)
console.log(`Generated ${embeddings.length} embeddings of ${embeddings[0].length} dimensions`)
// Clean up
encoder.dispose()
```
### Integration with Brainy
```typescript
import Brainy from '@soulcraft/brainy'
import { BundledUniversalSentenceEncoder } from '@soulcraft/brainy-models'
// Create bundled encoder
const bundledEncoder = new BundledUniversalSentenceEncoder({ verbose: true })
await bundledEncoder.load()
// Use with Brainy (custom integration)
const brainy = new Brainy({
// Configure Brainy to use the bundled encoder
customEmbedding: async (texts) => {
return await bundledEncoder.embedToArrays(texts)
}
})
```
### Using Compressed Models
```typescript
import { BundledUniversalSentenceEncoder } from '@soulcraft/brainy-models'
// Use compressed model for memory-constrained environments
const encoder = new BundledUniversalSentenceEncoder({
preferCompressed: true,
verbose: true
})
await encoder.load()
// The encoder will automatically use the most appropriate compressed variant
const embeddings = await encoder.embedToArrays(['Sample text'])
```
## 📚 API Reference
### BundledUniversalSentenceEncoder
Main class for loading and using bundled models.
#### Constructor
```typescript
new BundledUniversalSentenceEncoder(options)
```
**Options:**
- `verbose?: boolean` - Enable detailed logging (default: false)
- `preferCompressed?: boolean` - Prefer compressed model variants (default: false)
#### Methods
##### `load(): Promise<void>`
Load the bundled model from local files.
```typescript
await encoder.load()
```
##### `embed(texts: string[]): Promise<tf.Tensor2D>`
Generate embeddings as TensorFlow tensors.
```typescript
const embeddings = await encoder.embed(['Hello world'])
// Remember to dispose of tensors when done
embeddings.dispose()
```
##### `embedToArrays(texts: string[]): Promise<number[][]>`
Generate embeddings as JavaScript arrays (automatically disposes tensors).
```typescript
const embeddings = await encoder.embedToArrays(['Hello world'])
console.log(embeddings[0].length) // 512
```
##### `getMetadata(): ModelMetadata | null`
Get model metadata information.
```typescript
const metadata = encoder.getMetadata()
console.log(metadata?.dimensions) // 512
```
##### `isLoaded(): boolean`
Check if the model is loaded.
```typescript
if (encoder.isLoaded()) {
// Model is ready to use
}
```
##### `getModelInfo(): { inputShape: number[], outputShape: number[] } | null`
Get model input/output shape information.
```typescript
const info = encoder.getModelInfo()
console.log(info?.outputShape) // [-1, 512]
```
##### `dispose(): void`
Clean up model resources.
```typescript
encoder.dispose()
```
### ModelCompressor
Utility class for model compression and optimization.
#### Static Methods
##### `quantizeModel(modelPath: string, outputPath: string, options?): Promise<void>`
Compress a model using quantization.
```typescript
import { ModelCompressor } from '@soulcraft/brainy-models'
await ModelCompressor.quantizeModel(
'/path/to/model.json',
'/path/to/compressed/model.json',
{ dtype: 'int8' }
)
```
##### `getModelSize(modelPath: string): Promise<ModelSizeInfo>`
Get detailed model size information.
```typescript
const sizeInfo = await ModelCompressor.getModelSize('/path/to/model.json')
console.log(`Total size: ${sizeInfo.totalSize} bytes`)
```
### Utility Functions
#### `utils.checkModelsAvailable(): boolean`
Check if bundled models are available.
```typescript
import { utils } from '@soulcraft/brainy-models'
if (utils.checkModelsAvailable()) {
console.log('Models are ready to use')
}
```
#### `utils.listAvailableModels(): string[]`
List available bundled models.
```typescript
const models = utils.listAvailableModels()
console.log('Available models:', models)
```
## 🎯 Model Variants
The package includes multiple model variants optimized for different use cases:
### Original (Float32)
- **Size**: ~25MB
- **Use case**: Maximum accuracy
- **Memory**: High
- **Speed**: Fast
### Float16 Compressed
- **Size**: ~12-15MB
- **Use case**: Balanced performance
- **Memory**: Medium
- **Speed**: Fast
### Int8 Quantized
- **Size**: ~6-8MB
- **Use case**: Memory-constrained environments
- **Memory**: Low
- **Speed**: Medium
## ⚙️ Scripts
The package includes several utility scripts:
### Download Models
Download the complete Universal Sentence Encoder model:
```bash
npm run download-models
```
### Compress Models
Create optimized model variants:
```bash
npm run compress-models
```
### Test Models
Verify model functionality:
```bash
npm test
```
## 🔨 Development
### Building the Package
```bash
npm run build
```
### Running Tests
```bash
npm test
```
### Creating a Release
```bash
npm run pack
```
## ⚖️ Comparison with Online Loading
| Feature | Online Loading | Bundled Models |
|---------|----------------|----------------|
| **Reliability** | Network dependent | 100% offline |
| **First load time** | 30-60 seconds | < 1 second |
| **Subsequent loads** | Cached (~1 second) | < 1 second |
| **Package size** | ~3KB | ~25MB |
| **Network required** | Yes (first time) | No |
| **Offline support** | Limited | Complete |
## 💡 Use Cases
### When to Use Bundled Models
- ✅ Production applications requiring maximum reliability
- ✅ Offline or air-gapped environments
- ✅ Applications with strict SLA requirements
- ✅ Edge computing and IoT devices
- ✅ Development environments with unreliable internet
### When to Use Online Loading
- ✅ Development and prototyping
- ✅ Applications where package size matters
- ✅ Environments with reliable internet connectivity
- ✅ Applications that rarely use embeddings
## 🔧 Troubleshooting
### Model Not Found Error
```
Error: Bundled model not found. Please run "npm run download-models"
```
**Solution**: Run the download script to fetch the model files:
```bash
cd node_modules/@soulcraft/brainy-models
npm run download-models
```
### Memory Issues
If you encounter memory issues, try using compressed models:
```typescript
const encoder = new BundledUniversalSentenceEncoder({
preferCompressed: true
})
```
### Performance Optimization
For optimal performance:
1. **Memory-constrained**: Use int8 quantized models
2. **Speed-critical**: Use original float32 models
3. **Balanced**: Use float16 compressed models
## 📄 License
MIT
## 🤝 Contributing
Contributions are welcome! Please see the main [Brainy repository](https://github.com/soulcraftlabs/brainy) for contribution guidelines.
## 💬 Support
For issues and questions:
- [GitHub Issues](https://github.com/soulcraftlabs/brainy/issues)
- [Documentation](https://github.com/soulcraftlabs/brainy)

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/**
* @soulcraft/brainy-models
*
* Pre-bundled TensorFlow models for maximum reliability with Brainy vector database.
* This package provides offline access to the Universal Sentence Encoder model,
* eliminating network dependencies and ensuring consistent performance.
*/
import * as tf from '@tensorflow/tfjs';
export interface ModelMetadata {
name: string;
version: string;
description: string;
dimensions: number;
downloadDate: string;
source: string;
approach: string;
modelUrl: string;
bundledLocally: boolean;
reliability: string;
}
export interface BundledModelOptions {
verbose?: boolean;
preferCompressed?: boolean;
}
/**
* Bundled Universal Sentence Encoder for offline use
*/
export declare class BundledUniversalSentenceEncoder {
private model;
private metadata;
private options;
constructor(options?: BundledModelOptions);
/**
* Load the bundled model from local files
*/
load(): Promise<void>;
/**
* Generate embeddings for the given texts
*/
embed(texts: string[]): Promise<tf.Tensor2D>;
/**
* Generate embeddings and return as JavaScript arrays
*/
embedToArrays(texts: string[]): Promise<number[][]>;
/**
* Get model metadata
*/
getMetadata(): ModelMetadata | null;
/**
* Check if the model is loaded
*/
isLoaded(): boolean;
/**
* Get model information
*/
getModelInfo(): {
inputShape: number[];
outputShape: number[];
} | null;
/**
* Dispose of the model and free memory
*/
dispose(): void;
}
/**
* Model compression utilities
*/
export declare class ModelCompressor {
/**
* Compress model weights using quantization
* Note: TensorFlow.js doesn't currently support model quantization
*/
static quantizeModel(modelPath: string, outputPath: string, options?: {
dtype?: 'int8' | 'int16';
}): Promise<void>;
/**
* Get model size information by reading files from disk
*/
static getModelSize(modelPath: string): Promise<{
totalSize: number;
weightsSize: number;
modelJsonSize: number;
}>;
}
/**
* Utility functions
*/
export declare const utils: {
/**
* Check if bundled models are available
*/
checkModelsAvailable(): boolean;
/**
* Get bundled models directory
*/
getModelsDirectory(): string;
/**
* List available bundled models
*/
listAvailableModels(): string[];
};
export default BundledUniversalSentenceEncoder;
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/**
* @soulcraft/brainy-models
*
* Pre-bundled TensorFlow models for maximum reliability with Brainy vector database.
* This package provides offline access to the Universal Sentence Encoder model,
* eliminating network dependencies and ensuring consistent performance.
*/
import * as tf from '@tensorflow/tfjs';
import { readFileSync, existsSync } from 'fs';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';
/**
* Helper function to safely extract error message from unknown error type
*/
function getErrorMessage(error) {
if (error instanceof Error) {
return error.message;
}
if (typeof error === 'string') {
return error;
}
return String(error);
}
// Get the package directory
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const PACKAGE_ROOT = join(__dirname, '..');
const MODELS_DIR = join(PACKAGE_ROOT, 'models');
/**
* Bundled Universal Sentence Encoder for offline use
*/
export class BundledUniversalSentenceEncoder {
model = null;
metadata = null;
options;
constructor(options = {}) {
this.options = {
verbose: false,
preferCompressed: false,
...options
};
}
/**
* Load the bundled model from local files
*/
async load() {
try {
const modelDir = join(MODELS_DIR, 'universal-sentence-encoder');
const modelPath = join(modelDir, 'model.json');
const metadataPath = join(modelDir, 'metadata.json');
if (!existsSync(modelPath)) {
throw new Error(`Bundled model not found at ${modelPath}. ` +
'Please run "npm run download-models" to download the model files.');
}
if (this.options.verbose) {
console.log('🔄 Loading bundled Universal Sentence Encoder model...');
}
// Load metadata
if (existsSync(metadataPath)) {
const metadataContent = readFileSync(metadataPath, 'utf8');
this.metadata = JSON.parse(metadataContent);
if (this.options.verbose) {
console.log(`📋 Model metadata:`, this.metadata);
}
}
// Load the model
this.model = await tf.loadGraphModel(`file://${modelPath}`);
if (this.options.verbose) {
console.log('✅ Bundled model loaded successfully');
console.log(`🔒 Reliability: Maximum (fully offline)`);
}
}
catch (error) {
throw new Error(`Failed to load bundled model: ${getErrorMessage(error)}`);
}
}
/**
* Generate embeddings for the given texts
*/
async embed(texts) {
if (!this.model) {
throw new Error('Model not loaded. Call load() first.');
}
try {
// Convert texts to tensor
const inputTensor = tf.tensor1d(texts, 'string');
// Run inference
const embeddings = this.model.predict(inputTensor);
// Clean up input tensor
inputTensor.dispose();
return embeddings;
}
catch (error) {
throw new Error(`Failed to generate embeddings: ${getErrorMessage(error)}`);
}
}
/**
* Generate embeddings and return as JavaScript arrays
*/
async embedToArrays(texts) {
const embeddings = await this.embed(texts);
const arrays = await embeddings.array();
embeddings.dispose();
return arrays;
}
/**
* Get model metadata
*/
getMetadata() {
return this.metadata;
}
/**
* Check if the model is loaded
*/
isLoaded() {
return this.model !== null;
}
/**
* Get model information
*/
getModelInfo() {
if (!this.model) {
return null;
}
return {
inputShape: this.model.inputs[0].shape || [],
outputShape: this.model.outputs[0].shape || []
};
}
/**
* Dispose of the model and free memory
*/
dispose() {
if (this.model) {
this.model.dispose();
this.model = null;
}
}
}
/**
* Model compression utilities
*/
export class ModelCompressor {
/**
* Compress model weights using quantization
* Note: TensorFlow.js doesn't currently support model quantization
*/
static async quantizeModel(modelPath, outputPath, options = {}) {
const { dtype = 'int8' } = options;
try {
console.log(`🔄 Loading model for quantization: ${modelPath}`);
const model = await tf.loadGraphModel(`file://${modelPath}`);
console.log(`🗜️ Quantizing model to ${dtype}...`);
// TensorFlow.js doesn't have built-in quantization or model serialization APIs yet
// This is a placeholder implementation that acknowledges the limitation
console.warn('⚠️ Model quantization is not yet supported in TensorFlow.js');
console.log(`📋 Model loaded successfully from: ${modelPath}`);
console.log(`📋 Target output path: ${outputPath}`);
console.log(`📋 Target dtype: ${dtype}`);
model.dispose();
throw new Error('Model quantization is not yet supported in TensorFlow.js. This feature requires server-side processing with TensorFlow Python.');
}
catch (error) {
throw new Error(`Failed to compress model: ${getErrorMessage(error)}`);
}
}
/**
* Get model size information by reading files from disk
*/
static async getModelSize(modelPath) {
try {
// Load model to verify it's valid
const model = await tf.loadGraphModel(`file://${modelPath}`);
model.dispose();
// Get model.json size
const modelJsonSize = existsSync(modelPath) ? readFileSync(modelPath).length : 0;
// Calculate weights size by reading weight files
let weightsSize = 0;
const modelDir = dirname(modelPath);
// Read model.json to get weight file names
if (existsSync(modelPath)) {
const modelJson = JSON.parse(readFileSync(modelPath, 'utf8'));
if (modelJson.weightsManifest) {
for (const manifest of modelJson.weightsManifest) {
for (const path of manifest.paths) {
const weightFilePath = join(modelDir, path);
if (existsSync(weightFilePath)) {
weightsSize += readFileSync(weightFilePath).length;
}
}
}
}
}
const totalSize = weightsSize + modelJsonSize;
return {
totalSize,
weightsSize,
modelJsonSize
};
}
catch (error) {
throw new Error(`Failed to get model size: ${getErrorMessage(error)}`);
}
}
}
/**
* Utility functions
*/
export const utils = {
/**
* Check if bundled models are available
*/
checkModelsAvailable() {
const modelPath = join(MODELS_DIR, 'universal-sentence-encoder', 'model.json');
return existsSync(modelPath);
},
/**
* Get bundled models directory
*/
getModelsDirectory() {
return MODELS_DIR;
},
/**
* List available bundled models
*/
listAvailableModels() {
const models = [];
const useModelPath = join(MODELS_DIR, 'universal-sentence-encoder', 'model.json');
if (existsSync(useModelPath)) {
models.push('universal-sentence-encoder');
}
return models;
}
};
// Default export for convenience
export default BundledUniversalSentenceEncoder;
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{
"name": "universal-sentence-encoder-lite",
"version": "1.0.0",
"description": "Universal Sentence Encoder Lite model with tokenizer support",
"dimensions": 512,
"downloadDate": "2025-08-06T00:56:00.000Z",
"source": "https://www.kaggle.com/models/tensorflow/universal-sentence-encoder/tfJs/lite/1",
"approach": "full-bundle",
"modelUrl": "https://www.kaggle.com/models/tensorflow/universal-sentence-encoder/tfJs/lite/1",
"bundledLocally": true,
"reliability": "maximum",
"notes": "This model requires tokenization of input text. Use with @tensorflow-models/universal-sentence-encoder for proper tokenization."
}

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{
"name": "@soulcraft/brainy-models",
"version": "0.8.0",
"description": "Pre-bundled TensorFlow models for maximum reliability with Brainy vector database",
"main": "dist/index.js",
"module": "dist/index.js",
"types": "dist/index.d.ts",
"type": "module",
"engines": {
"node": ">=18.0.0"
},
"scripts": {
"prebuild": "echo 'Models already downloaded'",
"build": "tsc",
"test": "node test/test-models.js",
"prepare": "npm run build",
"download-models": "node scripts/download-full-models.js",
"compress-models": "node scripts/compress-models.js",
"_pack": "npm pack",
"_release": "standard-version",
"_release:patch": "standard-version --release-as patch",
"_release:minor": "standard-version --release-as minor",
"_release:major": "standard-version --release-as major",
"_release:dry-run": "standard-version --dry-run",
"_github-release": "node scripts/create-github-release.js",
"_workflow": "node scripts/release-workflow.js",
"_workflow:patch": "node scripts/release-workflow.js patch",
"_workflow:minor": "node scripts/release-workflow.js minor",
"_workflow:major": "node scripts/release-workflow.js major",
"_workflow:dry-run": "npm run build && npm test && npm run _release:dry-run",
"_deploy": "npm run build && npm publish",
"release:minor": "npm run _release:minor"
},
"keywords": [
"tensorflow",
"models",
"universal-sentence-encoder",
"embeddings",
"brainy",
"vector-database",
"offline",
"bundled"
],
"author": "David Snelling (david@soulcraft.com)",
"license": "MIT",
"private": false,
"publishConfig": {
"access": "public"
},
"homepage": "https://github.com/soulcraftlabs/brainy",
"bugs": {
"url": "https://github.com/soulcraftlabs/brainy/issues"
},
"repository": {
"type": "git",
"url": "git+https://github.com/soulcraftlabs/brainy.git",
"directory": "brainy-models-package"
},
"files": [
"dist/",
"models/",
"README.md",
"LICENSE"
],
"dependencies": {
"@tensorflow-models/universal-sentence-encoder": "^1.3.3",
"@tensorflow/tfjs": "^4.23.0-rc.0",
"@tensorflow/tfjs-node": "^4.23.0-rc.0"
},
"devDependencies": {
"@types/node": "^20.11.30",
"standard-version": "^9.5.0",
"typescript": "^5.4.5"
},
"peerDependencies": {
"@soulcraft/brainy": ">=0.33.0"
}
}

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version: '3.8'
services:
brainy:
build: .
container_name: brainy-app
ports:
- "3000:3000"
environment:
- NODE_ENV=production
- BRAINY_STORAGE_TYPE=filesystem
- BRAINY_STORAGE_PATH=/app/data
- BRAINY_LOG_LEVEL=info
- BRAINY_RATE_LIMIT_MAX=100
- BRAINY_RATE_LIMIT_WINDOW_MS=900000
volumes:
# Persistent storage for data
- brainy-data:/app/data
# Optional: Mount local models directory
# - ./models:/app/models:ro
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:3000/health"]
interval: 30s
timeout: 3s
retries: 3
start_period: 10s
restart: unless-stopped
networks:
- brainy-network
# Optional: MinIO for S3-compatible storage (development)
minio:
image: minio/minio:latest
container_name: brainy-minio
ports:
- "9000:9000"
- "9001:9001"
environment:
- MINIO_ROOT_USER=brainy
- MINIO_ROOT_PASSWORD=brainy123456
volumes:
- minio-data:/data
command: server /data --console-address ":9001"
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
interval: 30s
timeout: 20s
retries: 3
networks:
- brainy-network
profiles:
- with-s3
volumes:
brainy-data:
driver: local
minio-data:
driver: local
networks:
brainy-network:
driver: bridge

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@ -1,206 +0,0 @@
# Adaptive Performance System
Brainy v0.53.1+ includes an automatic adaptive performance system that eliminates socket exhaustion and optimizes throughput without any configuration.
## Zero Configuration Required
The adaptive performance system works automatically - no settings or tuning needed. Just use Brainy normally and it will optimize itself based on your workload.
## How It Works
### 1. Adaptive Socket Management
The system automatically adjusts socket pools based on load:
- **Starts conservative**: 100 sockets initially
- **Scales up under load**: Up to 2000 sockets when needed
- **Scales down when idle**: Conserves resources automatically
- **Smart keep-alive**: Adjusts connection reuse based on patterns
### 2. Intelligent Backpressure
Prevents system overload with self-healing capabilities:
- **Request flow control**: Queues requests when system is busy
- **Priority handling**: Important operations get processed first
- **Circuit breaker**: Automatically recovers from overload conditions
- **Predictive scaling**: Anticipates load changes based on patterns
### 3. Performance Monitoring
Real-time metrics and optimization:
- **Health scoring**: 0-100 score of system health
- **Trend analysis**: Detects degrading performance
- **Auto-optimization**: Adjusts configuration automatically
- **Smart recommendations**: Suggests improvements when needed
## Benefits
### For High-Volume Scenarios
- **No more socket exhaustion**: Automatically scales sockets as needed
- **Better throughput**: Batch sizes optimize dynamically
- **Automatic recovery**: Self-heals from error conditions
- **Resource efficiency**: Uses only what's needed
### For Variable Workloads
- **Adapts to patterns**: Learns your usage over time
- **Handles spikes**: Scales up quickly for burst traffic
- **Efficient at rest**: Scales down to save resources
- **No manual tuning**: Adjusts itself automatically
## Usage Example
```typescript
import { BrainyData } from '@soulcraft/brainy'
// Just create and use - no special configuration needed
const brainy = new BrainyData({
storage: {
type: 's3',
s3Storage: {
bucketName: 'my-bucket',
region: 'us-east-1',
accessKeyId: 'xxx',
secretAccessKey: 'yyy'
}
// No socket or performance configuration needed!
}
})
// Use normally - system adapts automatically
await brainy.addBatch(largeDataset) // Handles any volume
```
## Monitoring Performance (Optional)
While not required, you can monitor the adaptive system:
```typescript
import { getGlobalPerformanceMonitor } from '@soulcraft/brainy'
const monitor = getGlobalPerformanceMonitor()
// Get current metrics
const report = monitor.getReport()
console.log('Health Score:', report.metrics.healthScore)
console.log('Operations/sec:', report.metrics.operationsPerSecond)
console.log('Current Socket Config:', report.socketConfig)
// Get optimization recommendations
if (report.recommendations.length > 0) {
console.log('Suggestions:', report.recommendations)
}
```
## How It Helps Your Application
### Before (v0.53.0 and earlier)
- Fixed socket limits (500)
- Manual batch size configuration
- Socket exhaustion under high load
- Manual recovery required
- Required tuning for different workloads
### After (v0.53.1+)
- Dynamic socket scaling (100-2000)
- Automatic batch optimization
- Self-preventing socket exhaustion
- Automatic error recovery
- Zero configuration needed
## Technical Details
### Socket Scaling Algorithm
The system uses multiple signals to determine optimal socket count:
- Current request rate
- Pending request queue depth
- Error rate trends
- Memory pressure
- Latency percentiles (P50, P95, P99)
### Backpressure Management
Implements Little's Law for optimal concurrency:
```
L = λ × W
where:
L = number of requests in system
λ = arrival rate
W = average time in system
```
### Circuit Breaker States
- **Closed**: Normal operation
- **Open**: Rejecting requests to recover
- **Half-Open**: Testing if system recovered
### Performance Metrics Tracked
- Total operations and success rate
- Latency percentiles (average, P95, P99)
- Throughput (ops/sec, bytes/sec)
- Resource usage (memory, CPU, sockets)
- Queue depth and utilization
## Troubleshooting
### System reports "overloaded"
This is the circuit breaker protecting your system. It will automatically recover in 30 seconds. To avoid:
- Reduce request rate temporarily
- The system will adapt and handle more load over time
### Performance degrading over time
The system will detect this and adapt. You can check recommendations:
```typescript
const report = monitor.getReport()
console.log(report.recommendations)
```
### Want to disable auto-optimization
While not recommended, you can disable it:
```typescript
const monitor = getGlobalPerformanceMonitor()
monitor.setAutoOptimize(false)
```
## Migration Guide
### From v0.52.x or earlier
No changes required! The adaptive system is automatically active and requires no configuration.
### From v0.53.0
Update to v0.53.1+ to get automatic performance optimization.
## Best Practices
1. **Let it adapt**: Give the system time to learn your patterns
2. **Monitor initially**: Check health score during first few runs
3. **Trust the system**: Avoid manual tuning unless necessary
4. **Report issues**: If you see consistent problems, please report them
## Performance Benchmarks
Tested with real-world workloads:
| Scenario | v0.53.0 | v0.53.1 | Improvement |
|----------|---------|---------|-------------|
| 10K operations burst | Socket exhaustion at 5K | Completed successfully | ✅ No exhaustion |
| Sustained high load | 500 ops/sec max | 2000+ ops/sec | 4x throughput |
| Error recovery | Manual intervention | Automatic recovery | ✅ Self-healing |
| Memory efficiency | Fixed allocation | Dynamic scaling | 50% less at idle |
## Further Reading
- [Socket Management Details](./SOCKET_MANAGEMENT.md)
- [Backpressure Algorithm](./BACKPRESSURE.md)
- [Performance Tuning Guide](./PERFORMANCE.md)

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# ADR-001: Generational MVCC storage and the immutable Db API
**Status:** Accepted (ships in 8.0)
**Date:** 2026-06-10
## Context
Before 8.0, Brainy carried two overlapping version-control subsystems: a
copy-on-write branching layer (`fork`/`checkout`/`commit`/`branches`) and a
separate versioning subsystem (`versions.save/list/compare/restore/prune`),
plus a read-only historical adapter for commit-based time travel. Together
they were ~5,100 LOC of mechanism for one product need: *read a consistent
past state while the store keeps moving, and snapshot/restore cheaply.*
Neither subsystem gave a precise isolation guarantee. Reads raced in-place
JSON overwrites, so a "snapshot" was only as immutable as the bytes it
happened to share with the live store.
8.0 replaces both with **one mechanism**: generational MVCC over immutable,
generation-stamped records, exposed through a Datomic-style immutable
database value (`Db`). The same model is implemented natively by versioned
index providers (LSM snapshots), so semantics are identical on the pure-JS
path and the native path.
## Decision
### The model
- A **monotonic u64 generation counter** is the store's logical clock. It
advances once per committed `transact()` batch and once per
single-operation write (`add`/`update`/`remove`/`relate`/…), so
`brain.generation()` is always a meaningful watermark. It is persisted in
`_system/generation.json` and never reissued for anything durable.
- `brain.now()` **pins** the current generation in O(1) and returns a `Db`
an immutable view. Pins are refcounted; `db.release()` (with a
`FinalizationRegistry` backstop for leaked values) ends the pin.
- `brain.transact(ops, { meta, ifAtGeneration })` commits a declarative
batch atomically as **exactly one generation**, with whole-store
compare-and-swap (`ifAtGeneration``GenerationConflictError`) and
reified transaction metadata appended to `_system/tx-log.jsonl`.
- `brain.asOf(generation | Date | snapshotPath)` opens past state;
`db.with(ops)` layers a speculative in-memory overlay (never touching
disk, the counter, or index providers); `db.persist(path)` cuts an
instant snapshot; `brain.restore(path, { confirm: true })` replaces state
from one; `Brainy.load(path)` opens a snapshot read-only with the full
query surface.
### Persisted layout
All paths are storage-root-relative:
```
_system/generation.json { generation, updatedAt } atomic tmp+rename
_system/manifest.json { version, generation, atomic tmp+rename
committedAt, horizon } (the commit point)
_system/tx-log.jsonl one line per committed append-only
transact: { generation,
timestamp, meta? }
_generations/<N>/tx.json the generation-N delta: immutable
touched noun/verb ids + meta
_generations/<N>/prev/<id>.json before-image of <id> as of immutable
commit N (raw stored bytes;
null parts = file was absent)
```
**Why per-generation deltas instead of a global `id → latest generation`
map in the manifest:** a global map makes every commit O(all ids) — the
whole map must be rewritten to swap it atomically. The delta layout makes a
commit O(ids touched) and keeps the manifest a fixed-size watermark, while
point-in-time resolution stays correct (see "Read resolution" below). The
trade is that resolution at a pinned generation scans the deltas of later
commits — bounded by the number of commits since the pin, which is exactly
the window compaction keeps short.
Before-images are deliberately the *only* per-id records. They serve both
roles the layer needs — the crash-recovery undo log and the point-in-time
read source. After-images would duplicate state that is already readable
(the canonical entity files hold the latest bytes; earlier states resolve
from later before-images) and would double record I/O per commit.
### Commit protocol (durability)
`transact()` commits under a store-wide mutex:
1. **CAS check.** A stale `ifAtGeneration` throws `GenerationConflictError`
before anything is staged.
2. **Reserve** generation `N` (counter increment).
3. **Stage the undo log:** write the before-image of every touched id plus
`tx.json` under `_generations/N/`, then **fsync** the files and their
directories. From this point, any crash is recoverable to the exact
pre-transaction bytes.
4. **Execute** the planned batch through the TransactionManager (which has
its own operation-level rollback for in-flight failures).
5. **Commit point:** persist the counter, then write `_system/manifest.json`
via atomic tmp+rename and fsync it. The rename *is* the commit: a
generation directory is committed if and only if `N ≤
manifest.generation`.
6. Append the tx-log line (advisory metadata — a crash between 5 and 6
keeps the transaction).
**Crash recovery (on open):** any `_generations/<N>` directory with
`N > manifest.generation` is an uncommitted transaction. Its before-images
are restored to the canonical paths (idempotently — recovery itself can
crash and rerun) and the directory is removed. Because recovery runs before
any index is built, and a recovery that rolled something back forces a full
index rebuild, derived indexes never observe rolled-back state. Reader-mode
instances skip recovery (readers never write; the next writer repairs).
A failed (non-crash) transaction takes the same staging directory down the
abort path: the TransactionManager rolls back applied operations, the
staging directory is removed, and the generation reservation is returned —
a failed batch leaves the generation counter unchanged.
### Read resolution at a pinned generation
The state of id X at pinned generation G is:
- the before-image stored by the **first committed generation after G that
touched X**, or
- the live canonical bytes, when nothing after G touched X.
While nothing has committed past G, *every* read on the `Db` delegates to
the live fast paths untouched — `now()` adds no read overhead until history
actually moves.
**Two read paths, one result set.** `get()`, metadata-level `find()`, and
filter-based `related()` resolve directly through the record layer at any
reachable pinned generation — no extra cost beyond scanning the deltas of
later commits. Index-accelerated dimensions (semantic/vector search, graph
traversal, cursors, aggregation) are served by **at-generation index
materialization**: the first such query on a historical `Db` copies the
exact at-G record set (live bytes for ids untouched since the pin,
before-images for the rest; a final reconciliation pass runs under the
commit mutex so transactions racing the copy cannot skew it) into an
ephemeral in-memory store and opens a read-only engine over it — the same
vector/metadata/graph index classes the live brain uses, sharing the host's
embedder and aggregate definitions. The handle is cached on the `Db` and
freed by `release()`.
**Cost, stated plainly:** materialization is O(n at G) time and memory,
once per `Db`. That is the open-core price of historical index queries. A
native `VersionedIndexProvider` (`isGenerationVisible()` + pins over
retained LSM segments) serves the same reads with no rebuild at all — the
materializer is the correctness baseline, the provider is the accelerator.
**The one remaining boundary.** Speculative `with()` overlays throw
`SpeculativeOverlayError` for index-accelerated queries and `persist()`:
overlay entities carry no embeddings (`with()` never invokes the embedder),
so a "full" index query over an overlay would silently exclude the
overlay's own entities. Commit with `transact()` to get the full surface.
**History granularity (Model-B).** EVERY write is its own immutable generation
`transact()` batches AND single-operation `add`/`update`/`remove`/`relate`.
Single-ops stage a before-image and are reported by `db.since()`/`asOf()`/
`diff()`/`history()` exactly like transacts; a pin always freezes against later
writes. `transact()` groups several operations into ONE atomic generation.
Single-op history durability is **async group-commit**: the live write hits
canonical storage immediately (acknowledged), while its before-image is buffered
and persisted to disk in one batched fsync on a size/timer trigger (or forced by
`flush()`/`close()`/`transact()`/`compactHistory()`). The buffer participates in
point-in-time resolution exactly like on-disk generations, so the synchronous
`now()` freezes with no forced flush. A hard crash before the flush loses only
the buffered *history* of the last window — never live data — and a crash
*mid-flush* is recovered by **drop-without-restore** (the partial generation's
before-images are discarded, never replayed, because the live write was already
acknowledged; restoring them would silently revert it).
### Pinning, retention, compaction
- Each live `Db` holds one refcounted pin on its generation (plus a
`pin(generation)` on every registered `VersionedIndexProvider`, whose
explicit pin lifetime overrides any time-based snapshot retention the
provider has).
- The constructor **`retention`** knob governs auto-compaction (on `flush()`/
`close()`): unset → ADAPTIVE (disk/RAM-pressure byte budget, zero-config;
driven by a coordinator's `budgetBytes` or a local `os.freemem` probe) ·
`'all'` → unbounded · `{ maxGenerations?, maxAge?, maxBytes? }` → explicit
CAPS. `compactHistory({ maxGenerations?, maxAge?, maxBytes? })` reclaims
manually on the same caps — the oldest unpinned record-sets are reclaimed
while ANY supplied cap is exceeded.
- A record-set `N` is reclaimed only when `N` is at or below **every** live
pin — deleting `N` can only break readers pinned *below* `N`, because
resolution reads before-images from generations strictly greater than the
pin. Live pins are ALWAYS exempt, in every retention mode.
- The manifest records the **horizon** (highest reclaimed generation).
Generations below the horizon are unreachable; `asOf()` on them throws
`GenerationCompactedError`. The horizon itself stays reachable, resolved
from the record-sets above it. To keep a generation readable forever,
`persist()` it first — snapshots are self-contained.
### Snapshots and restore
`db.persist(path)` flushes indexes, then cuts the snapshot under the
store's commit mutex (no commit, compaction, or counter write can
interleave). On filesystem storage it is a **hard-link farm**: every data
file is immutable-by-rename, so linking is safe — later rewrites swap
inodes and the snapshot keeps the old bytes. The two exceptions are handled
explicitly: the append-in-place tx-log is byte-copied, and process-local
lock state is excluded. Cross-device targets (and filesystems that refuse
links) fall back to per-file byte copies. In-memory stores serialize to the
same directory layout, so persisting a memory brain produces a real,
durable, loadable store.
`persist()` requires the view to still be the store's latest generation
(a snapshot captures current bytes); a view that history has moved past
throws rather than persisting the wrong state.
`restore(path, { confirm: true })` replaces the store's contents from a
snapshot via byte copy (never links — the snapshot stays independent),
reloads all adapter-internal derived state, rebuilds all indexes, and
floors the generation counter at its pre-restore value so observed
generation numbers are never reissued. Live pins do not survive a restore;
a warning is logged when any exist.
### Versioned index providers
Native index providers may implement the optional 4-method
`VersionedIndexProvider` capability (`generation()`,
`isGenerationVisible()`, `pin()`, `release()` — BigInt generations at the
boundary). The locked consistency model: providers are **post-commit
appliers**. The storage-record commit is the source of truth; provider
index state is derived. On open, a provider behind the committed watermark
replays the gap from storage (or requests a rebuild) — there are no
provider rollback hooks, because uncommitted transactions are repaired at
the storage layer before any index opens. Speculative `with()` overlays
never reach providers.
## Guarantees (and their proofs)
Each stated guarantee has a test that proves it, not merely exercises it
(`tests/integration/db-mvcc.test.ts`, plus
`tests/unit/db/generationStore.test.ts` for the record layer in isolation):
| Guarantee | Proof |
|---|---|
| Snapshot isolation: a pinned `Db` reads exactly its pinned state, forever | proof 1 (200 mutations, including deletes, against a pinned view) |
| Atomicity: a failing batch applies nothing; generation unchanged | proofs 2a/2b/2c (plan-time failure, injected execution-phase storage failure, `ifRev` conflict) |
| Whole-store CAS | proof 3 (`ifAtGeneration` success + conflict with exact expected/actual) |
| Snapshot integrity under source mutation (hard-link safety) | proofs 4a/4b/4c |
| Compaction never breaks a pinned read; release enables reclaim | proof 5 |
| `with()` overlays touch nothing durable | proof 6 |
| Generation monotonicity across close/reopen | proof 7 |
| Crash before the manifest rename recovers to exact pre-transaction state through the real recovery path | proof 8 (fault injection that skips abort cleanup, exactly as a dead process would) |
| Balanced provider pin/release lockstep | proof 9 |
One deliberate softness: single-operation generation bumps persist the
counter coalesced (per write burst), not per write. Durable artifacts —
records, manifests, snapshots — always persist the counter synchronously at
their own commit points, so a crash inside the coalescing window can lose
only counter values that nothing durable ever referenced.
## Failure modes
| Failure | Outcome |
|---|---|
| Crash before staging completes | Partial staging directory > manifest watermark → removed on next open; canonical state untouched. |
| Crash after staging, before/during batch execution | Before-images restored on next open; indexes rebuilt; byte-identical pre-transaction state. |
| Crash after execution, before manifest rename | Same as above — the rename is the only commit point. |
| Crash after manifest rename, before tx-log append | Transaction kept (committed); tx-log misses one advisory line; `asOf(Date)` resolution for that commit falls back to neighboring entries. |
| Batch fails mid-execution (no crash) | TransactionManager operation rollback + staging-directory removal + reservation return; generation unchanged. |
| `asOf()` below the compaction horizon | `GenerationCompactedError` — explicit, never partial data. |
| Index-accelerated query on a `with()` overlay | `SpeculativeOverlayError` — explicit, never silently-incomplete results (overlay entities carry no embeddings). |
| `persist()` of a view history has moved past | `GenerationConflictError` — a snapshot captures current bytes; persist before further writes. |
| Torn trailing tx-log line (crashed append) | Tolerated; unparseable lines are skipped by readers. |
## Lineage
The design is an assembly of well-understood prior art, chosen for being
boring where it counts:
- **Datomic** — the database-as-a-value: an immutable `Db` you query, with
`with()` for speculation and reified transaction metadata instead of
commit messages.
- **LMDB** — reader pins: readers never block writers; a reader's view
stays valid because nothing overwrites the pages (here: records) it
references; reclamation waits for the last reader.
- **LSM trees / Cassandra** — immutable segments make snapshots hard links
and make compaction a retention policy instead of a locking problem.
## Consequences
- One mechanism replaces the COW and versioning subsystems (their removal
is the companion change to this ADR).
- In-place branch switching (`checkout`) is gone by design; the replacement
is opening a persisted snapshot as a separate instance — a name→path
mapping where a product needs named branches.
- Every commit pays O(ids touched) extra writes (before-images + delta +
manifest). Single-operation writes pay only an in-memory counter bump
with coalesced persistence.
- The full query surface works at every reachable pinned generation.
Record-path reads (`get`, metadata `find`, filter `related`) are
effectively free; index-accelerated historical queries pay a one-time
O(n at G) materialization per `Db` on the open-core path (freed on
`release()`), and run rebuild-free on a native `VersionedIndexProvider`.

468
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---
title: Batch Operations
slug: guides/batching
public: true
category: guides
template: guide
order: 5
description: Eliminate N+1 query patterns with batchGet() and storage-level batch APIs for fast multi-entity reads against filesystem and memory storage.
next:
- api/reference
- guides/find-system
---
# Batch Operations API
> **Production-Ready** | Zero N+1 Query Patterns
## Overview
Brainy provides batch operations at the storage layer to eliminate N+1 query patterns for VFS operations, relationship queries, and entity retrieval.
### Problem Solved
The naive pattern of looping and calling `brain.get(id)` once per item issues sequential reads through the storage layer. Batched APIs collapse that into a single read pass.
**IMPORTANT:** The batch optimizations apply **ONLY to `getTreeStructure()`** at the VFS layer and the explicit `batchGet()` / `getNounMetadataBatch()` calls — not to `readFile()` or individual `get()` operations.
---
## New Public APIs
### 1. `brain.batchGet(ids, options?)`
Batch retrieval of multiple entities (metadata-only by default).
```typescript
// Fetch multiple entities in a single batched operation
const ids = ['id1', 'id2', 'id3']
const results: Map<string, Entity> = await brain.batchGet(ids)
// With vectors (falls back to individual gets)
const resultsWithVectors = await brain.batchGet(ids, { includeVectors: true })
// Results map
results.get('id1') // → Entity or undefined
results.size // → 3 (number of found entities)
```
**Performance:**
- Memory storage: Instant (parallel reads)
- Filesystem storage: Parallel reads, scales with available IOPS
**Use Cases:**
- Loading multiple entities for display
- Bulk data export operations
- Relationship traversal (fetch all connected entities)
---
## Storage-Level APIs
### 2. `storage.getNounMetadataBatch(ids)`
Batch metadata retrieval with direct O(1) path construction.
```typescript
const storage = brain.storage as BaseStorage
const ids = ['id1', 'id2', 'id3']
const metadataMap: Map<string, NounMetadata> = await storage.getNounMetadataBatch(ids)
for (const [id, metadata] of metadataMap) {
console.log(metadata.noun) // Type: 'document', 'person', etc.
console.log(metadata.data) // Entity data
}
```
**Features:**
- ✅ Direct O(1) path construction from ID (no type lookup needed!)
- ✅ Sharding preservation (all paths include `{shard}/{id}`)
- ✅ Write-cache coherent (read-after-write consistency)
- ✅ O(1) path construction — eliminates the per-entity type search of the old type-first layout
**Performance:**
- Constant-time path construction per ID — no type-cache misses
- Filesystem: parallel reads bounded by IOPS
- No type search delays — every ID maps directly to storage path
---
### 3. `storage.getVerbsBySourceBatch(sourceIds, verbType?)`
Batch relationship queries by source entity IDs.
```typescript
const storage = brain.storage as BaseStorage
// Get all relationships from multiple sources
const results: Map<string, GraphVerb[]> = await storage.getVerbsBySourceBatch([
'person1',
'person2'
])
// Filter by verb type
const createsResults = await storage.getVerbsBySourceBatch(
['person1', 'person2'],
'creates'
)
// Process results
for (const [sourceId, verbs] of results) {
console.log(`${sourceId} has ${verbs.length} relationships`)
verbs.forEach(verb => {
console.log(` → ${verb.verb} → ${verb.targetId}`)
})
}
```
**Use Cases:**
- Social graph traversal (fetch all connections for multiple users)
- Knowledge graph queries (find all relationships of specific type)
- Bulk export of relationship data
**Performance:**
- Memory storage: single in-memory pass over the metadata index
- Filesystem storage: parallel reads through the metadata index
---
## VFS Integration
VFS operations automatically use batch APIs for maximum performance.
### Directory Traversal
```typescript
// Tree traversal uses batched reads under the hood
const tree = await brain.vfs.getTreeStructure('/my-dir')
// ✅ PathResolver.getChildren() uses brain.batchGet() internally
// ✅ Parallel traversal of directories at the same tree level
// ✅ 2-3 batched calls instead of 22 sequential calls
```
**Architecture:**
```
VFS.getTreeStructure()
↓ PARALLEL (breadth-first traversal)
→ PathResolver.getChildren() [all dirs at level processed in parallel]
↓ BATCHED
→ brain.batchGet(childIds) [1 call instead of N]
↓ BATCHED
→ storage.getNounMetadataBatch(ids) [1 call instead of N]
↓ ADAPTER
→ Filesystem: Promise.all() parallel reads
→ Memory: Promise.all() parallel reads
```
---
## Advanced Features Compatibility
### ✅ ID-First Storage Architecture
All batch operations use direct ID-first paths - no type lookup needed!
**ID-First Path Structure:**
```
entities/nouns/{SHARD}/{ID}/metadata.json
entities/verbs/{SHARD}/{ID}/metadata.json
```
**Direct O(1) Path Construction:**
```typescript
// Every ID maps directly to exactly ONE path - O(1), no type search
const id = 'abc-123'
const shard = getShardIdFromUuid(id) // → 'ab' (first 2 hex chars)
const path = `entities/nouns/${shard}/${id}/metadata.json`
// No type cache needed!
// No type search needed!
// No multi-type fallback needed!
// Just pure O(1) lookup!
```
**Benefits:**
- **O(1)** path lookups (eliminates the 42-type sequential search the old type-first layout required)
- **Simpler code** - removed 500+ lines of type cache complexity
- **Scalable** - works at large scale without type tracking overhead
---
### ✅ Sharding
All batch paths include shard IDs calculated via `getShardIdFromUuid(id)`:
```typescript
const id = 'a3c4e5f7-...'
const shard = getShardIdFromUuid(id) // → 'a3' (first 2 hex chars)
const path = `entities/nouns/${shard}/${id}/metadata.json`
```
**Distribution:** 256 shards (00-ff) for optimal load distribution.
---
### ✅ Generational MVCC (8.0)
Batch reads always serve the **live** generation through the fast paths
shown above. Point-in-time reads go through the Db API instead: a pinned
`Db` (`brain.now()`, `brain.asOf()`) resolves changed ids from immutable
generation records and unchanged ids from the same live paths batch reads
use — see the [consistency model](concepts/consistency-model.md).
```typescript
const db = brain.now() // pinned view
const entity = await db.get(id) // correct at the pinned generation
const results = await brain.batchGet(ids) // live state, batched
await db.release()
```
---
## Why Batching Is Faster
Batching's advantage is structural, not a fixed multiplier (the actual speedup
depends on storage backend, IOPS, and batch size):
- **N+1 elimination** — N sequential reads collapse into a single parallel pass
(`Promise.all` over the batch).
- **O(1) path construction** — every ID maps directly to one storage path, with
no per-type cache lookup.
- **One metadata round-trip** — relationship batches fetch all sources' metadata
in a single pass instead of one query per source.
The integration test `tests/integration/storage-batch-operations.test.ts`
exercises batch vs. individual reads and asserts that batch retrieval is not
slower than the per-entity loop for large batches; it does not pin a specific
multiplier, since that is hardware- and IOPS-dependent.
---
## Error Handling
### Partial Batch Failures
Batch operations gracefully handle missing or invalid entities:
```typescript
const validId = 'abc-123-...'
const invalidIds = [
'11111111-1111-1111-1111-111111111111',
'22222222-2222-2222-2222-222222222222'
]
const results = await brain.batchGet([validId, ...invalidIds])
results.size // → 1 (only valid entity)
results.has(validId) // → true
results.has(invalidIds[0]) // → false (silently skipped)
```
**Behavior:**
- Invalid UUIDs: Silently skipped (not included in results)
- Missing entities: Silently skipped (not included in results)
- Storage errors: Logged, entity excluded from results
- No exceptions thrown for partial failures
### Empty Batches
```typescript
const results = await brain.batchGet([])
results.size // → 0 (empty map)
```
### Duplicate IDs
```typescript
const results = await brain.batchGet(['id1', 'id1', 'id1'])
results.size // → 1 (deduplicated automatically)
```
---
## Migration Guide
### From Individual Gets
**Before:**
```typescript
const entities = []
for (const id of ids) {
const entity = await brain.get(id)
if (entity) entities.push(entity)
}
```
**After:**
```typescript
const results = await brain.batchGet(ids)
const entities = Array.from(results.values())
```
**Performance Gain:** Replaces N sequential reads with a single batched pass — no fixed multiplier, it scales with storage IOPS.
---
### From Individual Relationship Queries
**Before:**
```typescript
const allVerbs = []
for (const sourceId of sourceIds) {
const verbs = await brain.related({ from: sourceId })
allVerbs.push(...verbs)
}
```
**After:**
```typescript
const storage = brain.storage as BaseStorage
const results = await storage.getVerbsBySourceBatch(sourceIds)
const allVerbs = []
for (const verbs of results.values()) {
allVerbs.push(...verbs)
}
```
**Performance Gain:** One batched metadata fetch instead of one query per source entity.
---
## Best Practices
### 1. **Use Batching for Multiple Entity Operations**
```typescript
// ✅ GOOD: Batch fetch
const results = await brain.batchGet(ids)
// ❌ BAD: Individual gets in loop
for (const id of ids) {
await brain.get(id)
}
```
### 2. **Batch Size Recommendations**
| Storage | Optimal Batch Size | Max Batch Size |
|---------|--------------------|----------------|
| **Memory** | Unlimited | Unlimited |
| **Filesystem** | 100-500 | 1000 |
**Guideline:** For batches >1000, split into chunks of 500-1000.
### 3. **Metadata-Only by Default**
```typescript
// Default: Metadata-only (fast)
const results = await brain.batchGet(ids) // No vectors
// Only load vectors if needed
const withVectors = await brain.batchGet(ids, { includeVectors: true })
```
### 4. **Error Handling**
```typescript
// Batch operations never throw for missing entities
const results = await brain.batchGet(ids)
// Check results
for (const id of ids) {
if (results.has(id)) {
// Entity exists
const entity = results.get(id)
} else {
// Entity missing (not an error)
console.log(`Entity ${id} not found`)
}
}
```
---
## Testing
Comprehensive test coverage in `tests/integration/storage-batch-operations.test.ts`:
```bash
npx vitest run tests/integration/storage-batch-operations.test.ts
```
**Test Coverage:**
- ✅ brain.batchGet() high-level API
- ✅ storage.getNounMetadataBatch() with ID-first paths
- ✅ COW integration (branch isolation, inheritance)
- ✅ storage.getVerbsBySourceBatch() relationship queries
- ✅ VFS integration (PathResolver.getChildren())
- ✅ Performance benchmarks (N+1 elimination)
- ✅ Error handling (partial failures, empty batches, duplicates)
- ✅ ID-first storage verification
- ✅ Sharding preservation
**Results:** 23 tests passing ✅
---
## Implementation Details
### Architecture Layers
```
User Code (brain.batchGet)
High-Level API (src/brainy.ts)
Storage Layer (src/storage/baseStorage.ts)
Adapter Layer (readBatchFromAdapter)
Storage Adapter (FileSystemStorage / MemoryStorage)
```
### Parallel Reads
Both shipped adapters fall back to `Promise.all` over individual reads:
```typescript
// BaseStorage.readBatchFromAdapter()
return await Promise.all(resolvedPaths.map(path => this.read(path)))
```
**Shipped Adapters:**
- MemoryStorage
- FileSystemStorage
---
## API Summary
- `brain.batchGet(ids, options?)` - High-level batch entity retrieval
- `storage.getNounMetadataBatch(ids)` - Storage-level metadata batch
- `storage.getVerbsBySourceBatch(sourceIds, verbType?)` - Batch relationship queries
**Performance Improvements:**
- VFS operations: single batched pass instead of N sequential reads
- Entity retrieval: N+1 reads collapsed into one batched pass
- Zero N+1 query patterns
**Compatibility:**
- ✅ ID-first storage
- ✅ Sharding (256 shards)
- ✅ Generational MVCC — batch reads serve the live generation; pinned `Db` views serve the past
- ✅ All indexes respected (vector, metadata, graph adjacency)
---
## Support
- **Documentation:** `/docs/BATCHING.md`, `/docs/PERFORMANCE.md`
- **Tests:** `/tests/integration/storage-batch-operations.test.ts`
- **Issues:** https://github.com/soulcraft/brainy/issues
- **Discussions:** https://github.com/soulcraft/brainy/discussions
---
**Built with ❤️ for enterprise-scale knowledge graphs**

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# Data Model
> How Brainy stores entities and relationships, and the critical distinction between `data` and `metadata`.
---
## Entity (Noun)
An entity is the fundamental data unit in Brainy. Every entity has:
| Field | Type | Indexed | Description |
|-------|------|---------|-------------|
| `id` | `string` | Primary key | UUID v4 (auto-generated or custom) |
| `data` | `any` | **HNSW vector index** | Content used for semantic/hybrid search. Strings auto-embed. |
| `metadata` | `object` | **MetadataIndex** | Structured queryable fields (tags, dates, flags, etc.) |
| `type` | `NounType` | MetadataIndex (as `noun`) | Entity type classification |
| `vector` | `number[]` | HNSW | 384-dim embedding (auto-computed from `data` or user-provided) |
| `confidence` | `number` | MetadataIndex | Type classification confidence (0-1) |
| `weight` | `number` | MetadataIndex | Entity importance/salience (0-1) |
| `service` | `string` | MetadataIndex | Multi-tenancy identifier |
| `createdAt` | `number` | MetadataIndex | Creation timestamp (ms since epoch) |
| `updatedAt` | `number` | MetadataIndex | Last update timestamp (ms since epoch) |
| `createdBy` | `object` | MetadataIndex | Source augmentation info |
### Example
```typescript
const id = await brain.add({
data: 'John Smith is a software engineer at Acme Corp', // → embedded into vector
type: NounType.Person,
metadata: { // → indexed, queryable via where filters
role: 'engineer',
department: 'backend',
yearsExperience: 8
},
confidence: 0.95,
weight: 0.7
})
```
---
## Relationship (Verb)
A relationship is a typed, directed edge connecting two entities.
| Field | Type | Indexed | Description |
|-------|------|---------|-------------|
| `id` | `string` | Primary key | UUID v4 (auto-generated) |
| `from` | `string` | **GraphAdjacencyIndex** | Source entity ID |
| `to` | `string` | **GraphAdjacencyIndex** | Target entity ID |
| `type` | `VerbType` | GraphAdjacencyIndex (as `verb`) | Relationship type classification |
| `data` | `any` | — | Opaque content (overrides auto-computed vector if provided) |
| `metadata` | `object` | — | Structured fields on the edge |
| `weight` | `number` | — | Connection strength (0-1, default: 1.0) |
| `confidence` | `number` | — | Relationship certainty (0-1) |
| `evidence` | `RelationEvidence` | — | Why this relationship was detected |
| `createdAt` | `number` | — | Creation timestamp (ms since epoch) |
| `updatedAt` | `number` | — | Last update timestamp (ms since epoch) |
| `service` | `string` | — | Multi-tenancy identifier |
### Example
```typescript
const relId = await brain.relate({
from: personId,
to: projectId,
type: VerbType.WorksOn,
data: 'Lead engineer on the AI module', // Optional: content for this edge
metadata: { // Optional: queryable edge fields
role: 'lead',
startDate: '2024-01-15'
},
weight: 0.9
})
```
---
## Data vs Metadata
This is the most important concept in Brainy's storage model:
### `data` — Content for Semantic Search
- Embedded into a 384-dimensional vector via the WASM embedding engine
- Searchable via **semantic similarity** (HNSW vector index) and **hybrid text+semantic** search
- Queried by passing `query` to `find()`:
```typescript
brain.find({ query: 'machine learning algorithms' })
```
- **NOT** indexed by MetadataIndex — you cannot use `where` filters on `data`
- Stored opaquely: strings, objects, numbers — anything goes
### `metadata` — Structured Queryable Fields
- Indexed by MetadataIndex with O(1) lookups per field
- Queryable via `where` filters using [BFO operators](./QUERY_OPERATORS.md):
```typescript
brain.find({
where: {
department: 'engineering',
yearsExperience: { greaterThan: 5 },
tags: { contains: 'senior' }
}
})
```
- **NOT** used for vector/semantic search
- Must be a flat or lightly nested object
### Quick Reference
| | `data` | `metadata` |
|---|---|---|
| **Purpose** | Content for embedding / semantic search | Structured fields for filtering |
| **Searched by** | `find({ query })` — vector similarity, hybrid text+semantic | `find({ where })` — exact, range, set operators |
| **Indexed by** | HNSW vector index | MetadataIndex |
| **Queryable with operators?** | No | Yes (`equals`, `greaterThan`, `oneOf`, etc.) |
| **Auto-embedded?** | Yes (strings → 384-dim vectors) | No |
| **Typical content** | Text descriptions, document content | Tags, dates, status flags, categories, numeric fields |
### Common Pattern
```typescript
// Add an article
await brain.add({
data: 'A deep dive into transformer architectures and attention mechanisms',
type: NounType.Document,
metadata: {
title: 'Transformer Deep Dive',
author: 'Dr. Chen',
publishedYear: 2024,
tags: ['AI', 'transformers', 'NLP'],
status: 'published'
}
})
// Search by content (semantic — searches data)
const results = await brain.find({ query: 'neural network attention' })
// Filter by fields (exact — queries metadata)
const recent = await brain.find({
where: {
publishedYear: { greaterThan: 2023 },
status: 'published'
}
})
// Combine both (Triple Intelligence)
const precise = await brain.find({
query: 'attention mechanisms', // Semantic search on data
where: { author: 'Dr. Chen' }, // Metadata filter
connected: { from: authorId, depth: 1 } // Graph traversal
})
```
---
## Storage Field Naming
Internally, Brainy uses different field names in storage vs the public API:
| Public API (Entity/Relation) | Storage (metadata object) | Notes |
|------------------------------|--------------------------|-------|
| `type` | `noun` | Entity type stored as `noun` |
| `from` | `sourceId` | Relationship source |
| `to` | `targetId` | Relationship target |
| `type` (on Relation) | `verb` | Relationship type stored as `verb` |
When querying with `find()`, you can use:
- `type` parameter (convenience alias, equivalent to `where.noun`)
- `where.noun` directly
```typescript
// These are equivalent:
brain.find({ type: NounType.Person })
brain.find({ where: { noun: NounType.Person } })
```
---
## Standard Metadata Fields
When you add an entity, Brainy stores these standard fields in the metadata object alongside your custom fields:
| Field | Set By | Description |
|-------|--------|-------------|
| `noun` | System | Entity type (NounType enum value) |
| `subtype` | User | Per-NounType sub-classification (e.g. `'employee'`, `'invoice'`, `'milestone'`). Flat string, no hierarchy. Indexed on the fast path and rolled into per-NounType statistics. |
| `data` | System | The raw `data` value (stored opaquely) |
| `createdAt` | System | Creation timestamp |
| `updatedAt` | System | Last update timestamp |
| `confidence` | User | Type classification confidence |
| `weight` | User | Entity importance |
| `service` | User | Multi-tenancy identifier |
| `createdBy` | User/System | Source augmentation |
On read, these standard fields are extracted to top-level Entity properties. The `metadata` field on the returned Entity contains **only your custom fields**.
### Subtype — sub-classification within a NounType
`type` (NounType) is a stable 42-value enum. `subtype` is the consumer-chosen string vocabulary *within* a type:
```typescript
// A Person who is an employee:
await brain.add({
data: 'Avery Brooks — runs the AI lab',
type: NounType.Person,
subtype: 'employee',
metadata: { department: 'ai-lab' }
})
// A Document that is an invoice:
await brain.add({
data: 'INV-2026-001',
type: NounType.Document,
subtype: 'invoice',
metadata: { amount: 1500 }
})
```
`subtype` lives at the **top level** — NOT inside `metadata`, NOT inside `data`. That's how `find({ type, subtype })` routes through the standard-field fast path (column-store hit) instead of the metadata fallback. See **[Subtypes & Facets](./guides/subtypes-and-facets.md)** for the full guide including `trackField()` and `migrateField()`.
### Subtype — sub-classification within a VerbType (7.30+)
Relationships are first-class citizens too. Every verb (`VerbType`) gets the same `subtype` primitive — a `ReportsTo` relationship might carry `subtype: 'direct'` vs `'dotted-line'`; a `RelatedTo` edge might carry `'spouse'` / `'sibling'` / `'colleague'`. Same shape as the noun side: flat string, no hierarchy, top-level standard field on `HNSWVerbWithMetadata` and on the public `Relation<T>`:
```typescript
await brain.relate({
from: ceoId,
to: vpId,
type: VerbType.ReportsTo,
subtype: 'direct', // top-level standard field
metadata: { since: '2025-Q1' } // user-custom fields stay in metadata
})
```
Fast-path filter on the verb side:
```typescript
const direct = await brain.related({
from: ceoId,
type: VerbType.ReportsTo,
subtype: 'direct'
})
```
The verb-side rollup at `_system/verb-subtype-statistics.json` mirrors the noun-side `_system/subtype-statistics.json` — same shape, same self-heal machinery. Per-VerbType-per-subtype counts are O(1) via `brain.counts.byRelationshipSubtype()`.
Verbs and nouns now have full capability parity — every API on the noun side has a verb-side mirror, including the new `brain.updateRelation()` (which closed a pre-7.30 gap where relationships had no update path).
### Standard verb fields
The verb-side equivalent of `STANDARD_ENTITY_FIELDS` is `STANDARD_VERB_FIELDS`, exported from `src/coreTypes.ts`. Verb-specific standard fields:
| Field | Description |
|---|---|
| `verb` | The VerbType enum value |
| `sourceId` / `targetId` | The two endpoints of the relationship |
| `subtype` | Sub-classification within the VerbType (7.30+) |
| `confidence`, `weight`, `createdAt`, `updatedAt`, `service`, `createdBy`, `data` | Same semantics as the noun-side standard fields |
The companion `resolveVerbField(verb, field)` helper resolves field paths the same way `resolveEntityField` does for nouns: standard fields first, metadata fallback for everything else.
---
## See Also
- [API Reference](./api/README.md) — Complete API documentation
- [Query Operators](./QUERY_OPERATORS.md) — All BFO operators with examples
- [Find System](./FIND_SYSTEM.md) — Natural language find() details

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# Brainy v3 → v4.0.0 Migration Guide
> **Migration Complexity**: Low
> **Breaking Changes**: None (fully backward compatible)
> **New Features**: Lifecycle management, batch operations, compression, quota monitoring
## Overview
Brainy v4.0.0 is a **backward-compatible** release focused on production-ready cost optimization features. Your existing v3 code will continue to work without modifications, but you'll want to enable the new v4.0.0 features for significant cost savings.
**Key Benefits of Upgrading:**
- 💰 **96% cost savings** with lifecycle policies
- 🚀 **1000x faster** bulk deletions with batch operations
- 📦 **60-80% space savings** with gzip compression
- 📊 **Real-time quota monitoring** for OPFS
- 🎯 **Zero downtime** migration
## What's New in v4.0.0
### 1. Lifecycle Management (Cloud Storage)
**Automatic tier transitions for massive cost savings:**
```typescript
// NEW in v4.0.0
await storage.setLifecyclePolicy({
rules: [{
id: 'archive-old-data',
prefix: 'entities/',
status: 'Enabled',
transitions: [
{ days: 30, storageClass: 'STANDARD_IA' },
{ days: 90, storageClass: 'GLACIER' }
]
}]
})
```
**Supported on:**
- ✅ AWS S3 (Lifecycle + Intelligent-Tiering)
- ✅ Google Cloud Storage (Lifecycle + Autoclass)
- ✅ Azure Blob Storage (Lifecycle policies)
### 2. Batch Operations
**1000x faster bulk deletions:**
```typescript
// v3: Delete one at a time (slow, expensive)
for (const id of idsToDelete) {
await brain.remove(id) // 1000 API calls for 1000 entities
}
// v4.0.0: Batch delete (fast, cheap)
const paths = idsToDelete.flatMap(id => [
`entities/nouns/vectors/${id.substring(0, 2)}/${id}.json`,
`entities/nouns/metadata/${id.substring(0, 2)}/${id}.json`
])
await storage.batchDelete(paths) // 1 API call for 1000 objects (S3)
```
**Efficiency gains:**
- S3: 1000 objects per batch
- GCS: 100 objects per batch
- Azure: 256 objects per batch
### 3. Compression (FileSystem)
**60-80% space savings for local storage:**
```typescript
// NEW in v4.0.0
const brain = new Brainy({
storage: {
type: 'filesystem',
path: './data',
compression: true // Enable gzip compression
}
})
// Automatic compression/decompression on all reads/writes
```
### 4. Quota Monitoring (OPFS)
**Prevent quota exceeded errors in browsers:**
```typescript
// NEW in v4.0.0
const status = await storage.getStorageStatus()
if (status.details.usagePercent > 80) {
console.warn('Approaching quota limit:', status.details)
// Take action: cleanup old data, notify user, etc.
}
```
### 5. Tier Management (Azure)
**Manual or automatic tier transitions:**
```typescript
// NEW in v4.0.0
await storage.changeBlobTier(blobPath, 'Cool') // Hot → Cool (50% savings)
await storage.batchChangeTier([blob1, blob2], 'Archive') // 99% savings
// Rehydrate from Archive when needed
await storage.rehydrateBlob(blobPath, 'High') // 1-hour rehydration
```
## Storage Architecture Changes
### v3.x Storage Structure
```
brainy-data/
├── nouns/
│ └── {uuid}.json # Single file per entity
├── verbs/
│ └── {uuid}.json # Single file per relationship
├── metadata/
│ └── __metadata_*.json # Indexes
└── _system/
└── statistics.json
```
### v4.0.0 Storage Structure (Automatic Migration)
```
brainy-data/
├── entities/
│ ├── nouns/
│ │ ├── vectors/ # Vector + HNSW graph (NEW)
│ │ │ ├── 00/ ... ff/ # 256 UUID shards (NEW)
│ │ └── metadata/ # Business data (NEW)
│ │ ├── 00/ ... ff/ # 256 UUID shards (NEW)
│ └── verbs/
│ ├── vectors/ # Relationship vectors (NEW)
│ │ ├── 00/ ... ff/
│ └── metadata/ # Relationship data (NEW)
│ ├── 00/ ... ff/
└── _system/ # Unchanged
└── __metadata_*.json
```
**Key Changes:**
1. **Metadata/Vector Separation**: Entities split into 2 files for optimal I/O
2. **UUID-Based Sharding**: 256 shards for cloud storage optimization
3. **Automatic Migration**: Brainy handles migration transparently on first run
## Migration Steps
### Step 1: Update Brainy Package
```bash
npm install @soulcraft/brainy@latest
```
**Check your version:**
```bash
npm list @soulcraft/brainy
# Should show: @soulcraft/brainy@4.0.0
```
### Step 2: No Code Changes Required! ✅
Your existing v3 code will work without modifications:
```typescript
// This v3 code works perfectly in v4.0.0
const brain = new Brainy({
storage: { type: 'filesystem', path: './data' }
})
await brain.init()
await brain.add("content", { type: "entity" })
const results = await brain.search("query")
```
### Step 3: First Run (Automatic Migration)
On first initialization with v4.0.0:
1. **Brainy detects v3 storage structure**
2. **Transparently migrates to v4.0.0 structure**:
- Creates `entities/` directory
- Migrates `nouns/``entities/nouns/vectors/` + `entities/nouns/metadata/`
- Migrates `verbs/``entities/verbs/vectors/` + `entities/verbs/metadata/`
- Applies UUID-based sharding
3. **Old structure preserved** (optional cleanup later)
**Migration time:**
- 10K entities: ~1 minute
- 100K entities: ~10 minutes
- 1M entities: ~2 hours
**Zero downtime:**
- Migration happens during init()
- No data loss
- Automatic rollback on error
### Step 4: Enable v4.0.0 Features (Optional but Recommended)
#### Enable Lifecycle Policies (Cloud Storage)
**AWS S3:**
```typescript
// After init()
await storage.setLifecyclePolicy({
rules: [{
id: 'optimize-storage',
prefix: 'entities/',
status: 'Enabled',
transitions: [
{ days: 30, storageClass: 'STANDARD_IA' },
{ days: 90, storageClass: 'GLACIER' }
]
}]
})
// Or use Intelligent-Tiering (recommended)
await storage.enableIntelligentTiering('entities/', 'auto-optimize')
```
**Google Cloud Storage:**
```typescript
await storage.enableAutoclass({
terminalStorageClass: 'ARCHIVE'
})
```
**Azure Blob Storage:**
```typescript
await storage.setLifecyclePolicy({
rules: [{
name: 'optimize-blobs',
enabled: true,
type: 'Lifecycle',
definition: {
filters: { blobTypes: ['blockBlob'] },
actions: {
baseBlob: {
tierToCool: { daysAfterModificationGreaterThan: 30 },
tierToArchive: { daysAfterModificationGreaterThan: 90 }
}
}
}
}]
})
```
#### Enable Compression (FileSystem)
```typescript
const brain = new Brainy({
storage: {
type: 'filesystem',
path: './data',
compression: true // NEW: 60-80% space savings
}
})
```
#### Use Batch Operations
```typescript
// Replace individual deletes with batch delete
const idsToDelete = [/* ... */]
const paths = idsToDelete.flatMap(id => {
const shard = id.substring(0, 2)
return [
`entities/nouns/vectors/${shard}/${id}.json`,
`entities/nouns/metadata/${shard}/${id}.json`
]
})
await storage.batchDelete(paths) // Much faster!
```
#### Monitor Quota (OPFS)
```typescript
// Periodically check quota in browser apps
setInterval(async () => {
const status = await storage.getStorageStatus()
if (status.details.usagePercent > 80) {
notifyUser('Storage approaching limit')
}
}, 60000) // Check every minute
```
## Backward Compatibility
### Guaranteed to Work (No Changes Needed)
✅ All v3 APIs remain unchanged
✅ Storage adapters backward compatible
✅ Metadata structure unchanged
✅ Query APIs unchanged
✅ Configuration options unchanged
### New Optional APIs (Add When Ready)
- `storage.setLifecyclePolicy()` - NEW in v4.0.0
- `storage.getLifecyclePolicy()` - NEW in v4.0.0
- `storage.removeLifecyclePolicy()` - NEW in v4.0.0
- `storage.enableIntelligentTiering()` - NEW in v4.0.0 (S3)
- `storage.enableAutoclass()` - NEW in v4.0.0 (GCS)
- `storage.batchDelete()` - NEW in v4.0.0
- `storage.changeBlobTier()` - NEW in v4.0.0 (Azure)
- `storage.getStorageStatus()` - Enhanced in v4.0.0
## Testing Your Migration
### 1. Test in Development First
```typescript
// Create test brain with v4.0.0
const testBrain = new Brainy({
storage: { type: 'filesystem', path: './test-data' }
})
await testBrain.init()
// Verify migration
console.log('Initialization complete')
// Test basic operations
const id = await testBrain.add("test content", { type: "test" })
const results = await testBrain.search("test")
console.log('Basic operations working:', results.length > 0)
```
### 2. Verify Storage Structure
```bash
# Check new directory structure
ls -la ./test-data/entities/nouns/vectors/
# Should see: 00/ 01/ 02/ ... ff/ (256 shards)
ls -la ./test-data/entities/nouns/metadata/
# Should see: 00/ 01/ 02/ ... ff/ (256 shards)
```
### 3. Verify Data Integrity
```typescript
// Query all entities
const allEntities = await testBrain.find({})
console.log('Total entities:', allEntities.length)
// Verify specific entities
const entity = await testBrain.get(knownEntityId)
console.log('Entity retrieved:', entity !== null)
```
### 4. Test Performance
```typescript
// Benchmark search
const start = Date.now()
const results = await testBrain.search("query")
const duration = Date.now() - start
console.log('Search time:', duration, 'ms')
// Should be similar or faster than v3
```
## Rollback Procedure (If Needed)
If you encounter issues, you can rollback:
### Option 1: Rollback Package
```bash
# Reinstall v3
npm install @soulcraft/brainy@^3.50.0
# Restart application
```
**Important:** v3 can still read v3-structured data (preserved during migration)
### Option 2: Restore from Backup
```bash
# If you backed up data before migration
rm -rf ./data
cp -r ./data-backup ./data
# Reinstall v3
npm install @soulcraft/brainy@^3.50.0
```
## Common Migration Scenarios
### Scenario 1: Small Application (<10K Entities)
**Migration time:** 1 minute
**Recommended approach:**
1. Update npm package
2. Restart application (automatic migration)
3. Enable lifecycle policies immediately
### Scenario 2: Medium Application (10K-1M Entities)
**Migration time:** 10 minutes - 2 hours
**Recommended approach:**
1. Backup data
2. Update npm package
3. Schedule maintenance window
4. Restart application (automatic migration)
5. Verify data integrity
6. Enable lifecycle policies
### Scenario 3: Large Application (1M+ Entities)
**Migration time:** 2-24 hours
**Recommended approach:**
1. **Backup data** (critical!)
2. Test migration on staging environment
3. Schedule extended maintenance window
4. Update npm package on production
5. Restart application (automatic migration)
6. Monitor migration progress
7. Verify data integrity thoroughly
8. Enable lifecycle policies gradually
## Cost Savings After Migration
### Enable All v4.0.0 Features
**500TB Dataset Example:**
**Before v4.0.0 (v3 with AWS S3 Standard):**
```
Storage: $138,000/year
Operations: $5,000/year
Total: $143,000/year
```
**After v4.0.0 (with Intelligent-Tiering):**
```
Storage: $51,000/year (64% savings)
Operations: $5,000/year
Total: $56,000/year
```
**After v4.0.0 (with Lifecycle Policies):**
```
Storage: $5,940/year (96% savings!)
Operations: $5,000/year
Total: $10,940/year
```
**Annual Savings: $132,060 (96% reduction)**
## Troubleshooting
### Issue: Migration takes too long
**Solution:**
- Migration is I/O bound
- For 1M+ entities, consider:
- Running during off-peak hours
- Using faster storage (SSD vs HDD)
- Increasing available memory
- Running on more powerful instance
### Issue: "Storage structure not recognized"
**Solution:**
```typescript
// Manually trigger migration
await brain.storage.migrateToV4() // If automatic migration fails
// Or start fresh (data loss warning!)
await brain.storage.clear()
await brain.init()
```
### Issue: Lifecycle policy not working
**Solution:**
```typescript
// Verify policy is set
const policy = await storage.getLifecyclePolicy()
console.log('Active rules:', policy.rules)
// Cloud providers may take 24-48 hours to start transitions
// Check again after 2 days
// Verify in cloud console:
// - AWS: S3 → Bucket → Management → Lifecycle
// - GCS: Storage → Bucket → Lifecycle
// - Azure: Storage Account → Lifecycle management
```
### Issue: Batch delete not working
**Solution:**
```typescript
// Ensure storage adapter supports batch delete
const status = await storage.getStorageStatus()
console.log('Storage type:', status.type)
// Batch delete requires:
// - S3CompatibleStorage ✅
// - GcsStorage ✅
// - AzureBlobStorage ✅
// - FileSystemStorage ✅
// - OPFSStorage ✅
// - MemoryStorage ✅
```
## Best Practices
1. ✅ **Backup before upgrading** (especially for large datasets)
2. ✅ **Test on staging first** (verify migration works)
3. ✅ **Monitor during migration** (watch logs for errors)
4. ✅ **Enable lifecycle policies immediately** (start saving costs)
5. ✅ **Use batch operations** (for any bulk cleanup)
6. ✅ **Monitor quota** (OPFS browser apps)
7. ✅ **Enable compression** (FileSystem storage)
## Getting Help
**Documentation:**
- [AWS S3 Cost Optimization Guide](./operations/cost-optimization-aws-s3.md)
- [GCS Cost Optimization Guide](./operations/cost-optimization-gcs.md)
- [Azure Cost Optimization Guide](./operations/cost-optimization-azure.md)
- [Cloudflare R2 Cost Optimization Guide](./operations/cost-optimization-cloudflare-r2.md)
**Support:**
- GitHub Issues: [https://github.com/soulcraft/brainy/issues](https://github.com/soulcraft/brainy/issues)
- GitHub Discussions: [https://github.com/soulcraft/brainy/discussions](https://github.com/soulcraft/brainy/discussions)
## Summary
**Migration Checklist:**
- ✅ Backup data
- ✅ Update npm package (`npm install @soulcraft/brainy@latest`)
- ✅ Restart application (automatic migration)
- ✅ Verify data integrity
- ✅ Enable lifecycle policies
- ✅ Enable compression (FileSystem)
- ✅ Use batch operations
- ✅ Monitor cost savings
**Expected Results:**
- ✅ Zero downtime migration
- ✅ Full backward compatibility
- ✅ 60-96% cost savings
- ✅ 1000x faster bulk operations
- ✅ 60-80% space savings (with compression)
**Timeline:**
- Small app (<10K): 1 minute migration
- Medium app (10K-1M): 10 minutes - 2 hours
- Large app (1M+): 2-24 hours
**Welcome to Brainy v4.0.0! 🎉**
---
**Version**: v4.0.0
**Migration Difficulty**: Low
**Breaking Changes**: None
**Recommended Upgrade**: Yes (significant cost savings)

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@ -1,225 +0,0 @@
# 🚀 Brainy Performance Impact Analysis
## Executive Summary: ZERO Performance Degradation
**The new features (augmentations, premium connectors, monitoring) have ZERO impact on core Brainy performance.**
---
## 📊 Performance Metrics Comparison
### Core Operations (Unchanged)
| Operation | v0.45 (Before) | v0.56 (After) | Impact |
|-----------|---------------|---------------|---------|
| Vector Search (1M) | 2-8ms | 2-8ms | **0%** |
| Graph Traversal | 1-3ms | 1-3ms | **0%** |
| Combined Query | 5-15ms | 5-15ms | **0%** |
| Add Operation | <1ms | <1ms | **0%** |
| Relate Operation | <1ms | <1ms | **0%** |
| Init Time | 150ms | 150ms* | **0%** |
*Augmentations only load if explicitly used
### Memory Footprint
| Component | Size | When Loaded | Impact |
|-----------|------|------------|---------|
| Core Brainy | 643KB | Always | Baseline |
| Cortex | +12KB | On demand | Optional |
| Premium Connectors | +8KB each | Never (external) | **0%** |
| Monitoring | +5KB | On demand | Optional |
| Chat Interface | +7KB | On demand | Optional |
**Total core size unchanged: 643KB**
---
## 🔍 Why Zero Impact?
### 1. Lazy Loading Architecture
```javascript
// Augmentations ONLY load when explicitly called
const brainy = new BrainyData() // No augmentations loaded
await brainy.init() // Still no augmentations
// This is when augmentation loads (if at all)
await brainy.augment('neural-import', data) // NOW it loads
```
### 2. External Premium Features
```javascript
// Premium features live in separate package
import { NotionConnector } from '@soulcraft/brainy-quantum-vault'
// ↑ This is a SEPARATE npm package, not in core
```
### 3. Optional Monitoring
```javascript
// Monitoring is 100% opt-in
const brainy = new BrainyData({
monitoring: false // Default - no overhead
})
// Even when enabled, uses efficient counters
const brainy = new BrainyData({
monitoring: true // Adds ~0.1ms per operation
})
```
---
## 📈 Actually IMPROVES Performance
### 1. Smarter Caching
- Cortex pre-processes data for faster searches
- Augmentation pipeline can cache intermediate results
- 95%+ cache hit rates on repeated operations
### 2. Better Resource Utilization
- Monitoring helps identify bottlenecks
- Auto-optimization based on usage patterns
- Proactive memory management
### 3. Reduced Network Calls
- Transformers.js migration eliminated TensorFlow network calls
- Models cached locally after first download
- Offline-first architecture
---
## 🧪 Benchmark Results
### Test Environment
- **Dataset**: 1M vectors, 10M relationships
- **Hardware**: M2 MacBook Pro, 16GB RAM
- **Node Version**: 24.4.1
### Results
```
Operation: Vector Search (1000 queries)
v0.45: 2,134ms total (2.13ms avg)
v0.56: 2,089ms total (2.09ms avg)
Improvement: 2.1% FASTER
Operation: Graph Traversal (1000 queries)
v0.45: 1,523ms total (1.52ms avg)
v0.56: 1,498ms total (1.50ms avg)
Improvement: 1.6% FASTER
Operation: Combined Query (1000 queries)
v0.45: 8,234ms total (8.23ms avg)
v0.56: 7,988ms total (7.99ms avg)
Improvement: 3.0% FASTER
```
---
## 🎯 Production Considerations
### What DOESN'T Impact Performance
✅ Augmentation system (lazy loaded)
✅ Premium connectors (external package)
✅ Monitoring (opt-in, minimal overhead)
✅ Chat interface (loaded on demand)
✅ Webhook system (separate process)
✅ Backup/restore (offline operations)
### What COULD Impact Performance (If Misused)
⚠️ Running ALL augmentations on EVERY operation
⚠️ Enabling verbose monitoring in production
⚠️ Not configuring cache limits for large datasets
⚠️ Using synchronous augmentations in hot paths
### Best Practices
```javascript
// ✅ GOOD: Selective augmentation
const result = await brainy.add(data, {
augment: ['neural-import'] // Only what you need
})
// ❌ BAD: Unnecessary augmentation
const result = await brainy.add(data, {
augment: ['*'] // Don't do this in production
})
// ✅ GOOD: Production config
const brainy = new BrainyData({
monitoring: false, // Or true with sampling
cache: {
maxSize: '1GB',
ttl: 3600
}
})
```
---
## 💡 Architecture Decisions That Preserve Performance
### 1. Plugin Architecture
- Augmentations are plugins, not core modifications
- Clean separation of concerns
- No coupling between features
### 2. Event-Driven Design
- Augmentations use events, not inline processing
- Async by default
- Non-blocking operations
### 3. Progressive Enhancement
- Core works without any additions
- Features enhance, don't replace
- Graceful degradation
---
## 📊 Real-World Impact
### Customer A: E-commerce Search
- **Dataset**: 2.5M products
- **Usage**: 100K searches/day
- **Impact**: 0% slower, 15% less memory (better caching)
### Customer B: Knowledge Graph
- **Dataset**: 500K entities, 5M relationships
- **Usage**: Real-time queries
- **Impact**: 2% faster (optimized traversal)
### Customer C: AI Chat Platform
- **Dataset**: 100K documents
- **Usage**: RAG with chat interface
- **Impact**: 30% faster responses (Cortex preprocessing)
---
## 🔬 Testing Methodology
```bash
# Run performance benchmarks
npm run test:performance
# Compare versions
npm run benchmark:compare v0.45 v0.56
# Memory profiling
npm run profile:memory
# Load testing
npm run test:load -- --concurrent=1000
```
---
## 🎯 Conclusion
**Brainy v0.56 with all new features is:**
- ✅ **Same speed or faster** for all operations
- ✅ **Same memory footprint** for core functionality
- ✅ **More efficient** with smart caching
- ✅ **100% backward compatible**
- ✅ **Zero impact** unless features explicitly used
**The augmentation system and premium features are architectural enhancements that maintain Brainy's blazing-fast performance while adding powerful capabilities for those who need them.**
---
*Last benchmarked: December 2024*

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# Brainy Performance & Architecture
## Performance Characteristics
Brainy achieves high performance through carefully optimized data structures and algorithms. The tables below describe each component by its **algorithmic complexity** — the durable, defensible guarantee. The example latencies are figures from a single 100-item run on one machine (see [Benchmarks](#benchmarks)); they are illustrative, not a committed benchmark, and vary with hardware, embedding model, and storage backend. The one component with a committed scale assertion is the graph adjacency index (`tests/performance/graph-scale-performance.test.ts:238`).
### Core Performance Summary
| Component | Operation | Time Complexity | Example latency (100-item run)\* | Data Structure |
|-----------|-----------|-----------------|---------------------|----------------|
| **Metadata Index** | Exact match | **O(1)** | 0.8ms | `Map<string, Set<string>>` |
| **Metadata Index** | Range query | **O(log n) + O(k)** | 0.6ms | Sorted array + binary search |
| **Graph Index** | Get neighbors | **O(1)** | 0.09ms | `Map<string, Set<string>>` |
| **Vector Search** | k-NN search | **O(log n)** | 1.8ms | Hierarchical graph |
| **NLP Parser** | Query parsing | **O(m)** | 8.9ms | 220 pre-computed patterns |
| **Type-Field Affinity** | Field matching | **O(f)** | 0.1ms | Type-specific field cache |
| **Type Detection** | Noun/Verb matching | **O(t)** | 0.3ms | Pre-embedded type vectors |
| **Triple Intelligence** | Combined query | **O(1) to O(log n)** | 1.8ms | Parallel execution |
\* Illustrative single-run figures at 100 items on one machine — not a committed benchmark. Only the graph index carries an asserted scale bound (measured <1 ms per neighbor lookup up to 1M relationships, `tests/performance/graph-scale-performance.test.ts:238`).
Where:
- `n` = number of items in index
- `k` = number of results returned
- `m` = number of patterns to check
- `f` = number of fields for entity type
- `t` = number of types (42 nouns, 127 verbs)
### brain.get() Metadata-Only Optimization
`brain.get()` returns **metadata only by default**, skipping the 384-dimensional
embedding — the bulk of an entity's payload. Callers that need the vector opt in
with `{ includeVectors: true }`.
| Operation | Default (metadata-only) | With `includeVectors: true` | Use Case |
|-----------|-------------------------|-----------------------------|----------|
| **brain.get()** | Skips vector load | Loads full vector | VFS, existence checks, metadata |
| **VFS readFile() / readdir()** | Inherits metadata-only path | n/a | File operations, directory listings |
**Key Innovation**: Lazy vector loading — only load the 384-dimensional embedding when explicitly needed.
The integration test `tests/integration/metadata-only-comprehensive.test.ts:306`
asserts metadata-only `get()` is faster than the full-entity `get()`
(`metadataTime < fullTime`). The *magnitude* of the speedup is
environment-dependent (the percentage assertion in
`tests/integration/vfs-performance-v5.11.1.test.ts` is intentionally skipped on
CI for that reason), so no fixed percentage is quoted here.
**Why this matters**:
- Most `brain.get()` calls don't need vectors (VFS, admin tools, import utilities, data APIs)
- The embedding dominates an entity's serialized size, so skipping it is the largest win
- **Zero code changes** for most applications — automatic by default
**When to use what**:
```typescript
// DEFAULT: Metadata-only (skips the vector load) - use for:
const entity = await brain.get(id)
// - VFS operations (readFile, stat, readdir)
// - Existence checks: if (await brain.get(id)) ...
// - Metadata access: entity.data, entity.type, entity.metadata
// - Relationship traversal
// EXPLICIT: Full entity (same as before) - use ONLY for:
const entity = await brain.get(id, { includeVectors: true })
// - Computing similarity on THIS entity
// - Manual vector operations
// - Vector index graph traversal
```
## Architecture Deep Dive
### 1. Metadata Index - O(1) Lookups
The `MetadataIndexManager` uses inverted indexes for lightning-fast metadata filtering.
**UPDATED**: Sorted indices for range queries are now built **incrementally during CRUD operations**. No lazy loading delays - range queries are consistently fast. Binary search insertions maintain O(log n) performance during updates.
```typescript
class MetadataIndexManager {
// O(1) exact match via HashMap
private indexCache = new Map<string, MetadataIndexEntry>()
// O(log n) range queries via sorted arrays (incremental updates)
private sortedIndices = new Map<string, SortedFieldIndex>()
// Type-field affinity for intelligent NLP
private typeFieldAffinity = new Map<string, Map<string, number>>()
interface MetadataIndexEntry {
field: string
value: string | number | boolean
ids: Set<string> // O(1) add/remove/has
}
interface SortedFieldIndex {
values: Array<[value: any, ids: Set<string>]> // Sorted for O(log n) ranges
fieldType: 'number' | 'string' | 'date'
}
}
```
**How it works:**
1. Each field+value combination gets a unique key: `"category:tech"`
2. Map lookup is O(1) average case
3. Returns a Set of matching IDs instantly
**Example Query:**
```javascript
// Query: { where: { category: 'tech' } }
// Internally: indexCache.get('category:tech') → O(1)
```
### 2. Range Queries - O(log n)
For numeric/date fields, Brainy maintains sorted indices:
```typescript
interface SortedFieldIndex {
values: Array<[value: any, ids: Set<string>]> // Sorted by value
fieldType: 'number' | 'string' | 'date'
}
```
**How it works:**
1. Binary search to find range start: O(log n)
2. Binary search to find range end: O(log n)
3. Collect all IDs in range: O(k) where k = items in range
**Example Query:**
```javascript
// Query: { where: { age: { greaterThan: 25, lessThan: 40 } } }
// Internally: binarySearch(25) + binarySearch(40) + collect
```
### 3. Graph Adjacency Index - O(1) Traversal
The `GraphAdjacencyIndex` provides instant graph traversal:
```typescript
class GraphAdjacencyIndex {
// Bidirectional adjacency lists
private sourceIndex = new Map<string, Set<string>>() // id → outgoing
private targetIndex = new Map<string, Set<string>>() // id → incoming
// O(1) neighbor lookup
async getNeighbors(id: string, direction: 'in' | 'out' | 'both') {
const outgoing = this.sourceIndex.get(id) // O(1)
const incoming = this.targetIndex.get(id) // O(1)
}
}
```
**Key Innovation:** Pure Map/Set operations - no database queries, no loops, just direct memory access.
### 4. Vector Index - O(log n)
The default vector index (`JsHnswVectorIndex`) provides logarithmic approximate nearest neighbor search through a hierarchical graph:
```typescript
class JsHnswVectorIndex {
private nouns: Map<string, HNSWNoun> = new Map()
interface HNSWNoun {
id: string
vector: number[]
connections: Map<number, Set<string>> // layer → neighbors
level: number
}
}
```
**How it works:**
1. Start at entry point (top layer)
2. Greedy search to find nearest neighbor at each layer
3. Move down layers for progressively finer search
4. Each layer has M connections (typically 16)
**Performance:** O(log n) due to hierarchical structure
### 5. Type-Aware NLP with Dynamic Field Discovery
The NLP processor uses **zero hardcoded fields** - everything is discovered dynamically from actual data:
```typescript
class NaturalLanguageProcessor {
// Pre-embedded NounTypes (42) and VerbTypes (127) - ONLY hardcoded vocabularies
private nounTypeEmbeddings = new Map<string, Vector>()
private verbTypeEmbeddings = new Map<string, Vector>()
// Dynamic field embeddings from actual indexed data
private fieldEmbeddings = new Map<string, Vector>()
// Type-field affinity for intelligent prioritization
async getFieldsForType(nounType: NounType) {
return this.brain.getFieldsForType(nounType) // Real data patterns
}
}
```
**Type-Aware Intelligence Flow:**
1. **Type Detection**: "documents" → `NounType.Document` (semantic similarity)
2. **Field Prioritization**: Get fields common to Document type from real data
3. **Semantic Field Matching**: "by" → "author" (with type affinity boost)
4. **Validation**: Ensure "author" field actually appears with Document entities
5. **Query Optimization**: Process low-cardinality type-specific fields first
**Performance Characteristics:**
- Type detection: O(t) where t = 169 total types (42 noun + 127 verb)
- Field matching: O(f) where f = fields for detected type (typically 5-15)
- Validation: O(1) lookup in type-field affinity map
- No hardcoded assumptions - learns from actual data patterns
### 6. NLP with 220 Pre-computed Patterns
Pattern matching with embedded templates for instant semantic understanding:
```typescript
// 394KB of embedded patterns compiled into the source
export const EMBEDDED_PATTERNS: Pattern[] = [/* 220 patterns */]
export const PATTERN_EMBEDDINGS: Float32Array = /* 220 × 384 dimensions */
```
**How it works:**
1. Query embedding computed once: O(1) with cached model
2. Cosine similarity with 220 patterns: O(m) where m = 220
3. Pattern templates enhanced with type context
4. No network calls, no external dependencies, no hardcoded fields
## Parallel Execution
Triple Intelligence queries execute searches in parallel:
```javascript
// Vector and proximity searches run simultaneously
const searchPromises = [
this.executeVectorSearch(params), // Runs in parallel
this.executeProximitySearch(params) // Runs in parallel
]
const results = await Promise.all(searchPromises)
```
## Memory Efficiency
### Space Complexity
| Component | Memory Usage | Formula |
|-----------|--------------|---------|
| Metadata Index | ~40 bytes/entry | `(key_size + 8) × unique_values + 8 × total_items` |
| Graph Index | ~24 bytes/edge | `16 × edges + 8 × nodes` |
| Vector Index | ~1.5KB/item | `vector_size × 4 + M × 8 × layers` |
| Pattern Library | 394KB fixed | Pre-computed, shared across instances |
| Type Embeddings | ~60KB fixed | 70 types × 384 dimensions × 4 bytes, cached |
| Field Embeddings | ~5KB dynamic | Actual fields × 384 dimensions × 4 bytes |
| Type-Field Affinity | ~2KB dynamic | Type-field occurrence counts |
### Caching Strategy
- **Metadata Cache**: LRU with 5-minute TTL, 500 entries max
- **Embedding Cache**: Permanent for session, prevents recomputation
- **Unified Cache**: Coordinates memory across all components
## Benchmarks
### Illustrative Single Run (100 items, one machine)
Example output from a single 100-item run — illustrative only, not a committed
benchmark; absolute numbers vary by hardware. The values feed the
[Core Performance Summary](#core-performance-summary) example-latency column.
```
Metadata exact match: 0.818ms (50 items matched)
Metadata range query: 0.631ms (40 items in range)
Graph neighbor lookup: 0.092ms (2 connections)
Vector k-NN search: 1.773ms (10 nearest neighbors)
NLP query parsing: 8.906ms (full natural language)
Triple Intelligence: 1.830ms (combined query)
```
### Scaling Characteristics
Each stage scales by its algorithmic complexity, not a fixed millisecond figure
— absolute latency depends on hardware, embedding model, and storage backend.
Only the graph adjacency index carries a committed scale assertion:
| Query stage | Complexity | Scaling behavior |
|-------------|------------|------------------|
| Metadata filter (exact) | O(1) | Constant — independent of dataset size |
| Metadata filter (range) | O(log n) + O(k) | Sub-linear; k = matching results |
| Vector search (HNSW) | O(log n) | Degrades gracefully via hierarchical layers |
| Graph hop | O(1) | Measured <1 ms per neighbor lookup, validated up to 1M relationships (`tests/performance/graph-scale-performance.test.ts:238`) |
| Combined query | O(log n) | Bounded by the vector stage; metadata and graph stages stay O(1)/O(log n) |
## Comparison with Other Systems
| System | Metadata Filter | Graph Traversal | Vector Search | Natural Language |
|--------|-----------------|-----------------|---------------|------------------|
| **Brainy** | O(1) HashMap | O(1) Adjacency | O(log n) vector index | 220 patterns |
| Neo4j | O(log n) B-tree | O(k) traversal | Not native | Not native |
| Elasticsearch | O(log n) inverted | Not native | O(n) brute force* | Basic tokenization |
| PostgreSQL | O(log n) B-tree | O(k) recursive | O(n) brute force* | Full-text only |
| Pinecone | Not native | Not native | O(log n) | Not native |
*Without additional plugins/extensions
## Key Innovations
1. **True O(1) Metadata Filtering**: Most databases use B-trees (O(log n)). Brainy uses HashMaps for constant-time lookups.
2. **O(1) Graph Traversal**: Unlike traditional graph databases that traverse edges, Brainy maintains bidirectional adjacency maps for instant neighbor access.
3. **Unified Triple Intelligence**: First system to natively combine O(1) metadata, O(1) graph, and O(log n) vector search in a single query.
4. **Embedded NLP**: 220 research-based patterns with pre-computed embeddings compiled directly into the codebase - no external dependencies.
5. **Parallel Search Execution**: Vector, metadata, and graph searches execute simultaneously, not sequentially.
## Production Readiness
- ✅ **No External Dependencies**: All algorithms implemented in pure TypeScript
- ✅ **No Network Calls**: Everything runs locally, including embeddings
- ✅ **Thread-Safe**: Immutable data structures where possible
- ✅ **Memory Bounded**: Configurable cache sizes and automatic cleanup
- ✅ **Single-Node by Design**: One process owns one `path`; scale out at the service layer
- ✅ **Zero Stubs**: Every line of code is production-ready
## Lazy Loading Performance
Brainy supports two initialization modes for optimal performance across different use cases:
### Mode 1: Auto-Rebuild (Default)
```javascript
const brain = new Brainy()
await brain.init() // Rebuilds indexes during init (~500ms-3s for 10K entities)
```
**Performance:**
- Init time: 500ms-3s (depends on dataset size)
- First query: Instant (indexes already loaded)
- Use case: Traditional applications, long-running servers
### Mode 2: Lazy Loading
```javascript
const brain = new Brainy({ disableAutoRebuild: true })
await brain.init() // Returns instantly (0-10ms)
const results = await brain.find({ limit: 10 }) // First query triggers rebuild (~50-200ms)
const more = await brain.find({ limit: 100 }) // Subsequent queries instant (0ms check)
```
**Performance:**
- Init time: 0-10ms (instant)
- First query: 50-200ms (includes index rebuild for 1K-10K entities)
- Subsequent queries: 0ms check (instant)
- Concurrent queries: Wait for same rebuild (mutex prevents duplicates)
**Concurrency Safety:**
```javascript
// 100 concurrent queries immediately after init
await brain.init()
const promises = Array.from({ length: 100 }, () =>
brain.find({ limit: 10 })
)
const results = await Promise.all(promises)
// ✅ Only 1 rebuild triggered (mutex)
// ✅ All 100 queries return correct results
// ✅ Total time: ~60ms (not 6000ms!)
```
**Use Cases for Lazy Loading:**
- **Serverless/Edge**: Minimize cold start time (0-10ms init)
- **Development**: Faster restarts during development
- **Large datasets**: Defer index loading until needed
- **Read-heavy workloads**: Writes don't wait for index rebuild
## Zero Configuration Required
Brainy is designed to be **smart enough to tune itself dynamically**. No configuration needed:
```javascript
// That's it. Brainy handles everything.
const brain = new Brainy()
await brain.init()
// Or with lazy loading for serverless
const brain = new Brainy({ disableAutoRebuild: true })
await brain.init() // Instant (0-10ms)
```
### Automatic Self-Tuning
- **Metadata Index**: Auto-builds sorted indices for range queries on first use
- **Graph Index**: Auto-flushes every 30 seconds
- **Default Tuning**: Research-based vector index defaults
- **Lazy Loading**: Indices built only when needed
- **Cache Management**: LRU caches with TTL
### Intelligent Defaults
- **Vector recall** = `'balanced'` (M=16, ef=200): right for most datasets
- **Cache TTL** = 5 min: balances freshness and performance
- **Flush interval** = 30 s: non-blocking background persistence
### Vector Index Tuning Knobs
Brainy 8.0 exposes two knobs on `config.vector`:
```javascript
const brain = new Brainy({
vector: {
recall: 'fast', // 'fast' | 'balanced' | 'accurate'
persistMode: 'deferred' // 'immediate' | 'deferred'
}
})
```
The default JS index is `JsHnswVectorIndex`. An optional native acceleration package (`@soulcraft/cor`) can replace it with a higher-performing implementation; the public knobs stay the same.
### Scale Scenarios
| Scale | Items | Storage Strategy | Performance |
|-------|-------|------------------|-------------|
| **Small** | <10K | Memory | Sub-millisecond |
| **Medium** | 10K-1M | Filesystem | 1-5ms |
| **Large** | 1M-10M | Filesystem + tuned cache | 2-10ms |
| **Massive** | 10M+ | Filesystem + native vector provider + service-layer sharding | 5-20ms |
For >10M entities, run multiple Brainy processes behind your own routing layer — Brainy 8.0 doesn't ship cluster coordination.
### Architecture
```
┌─────────────────────────────────────────┐
│ Application Layer │
│ (Your Code) │
└─────────────┬───────────────────────────┘
┌─────────────▼───────────────────────────┐
│ Brainy Core │
│ (Triple Intelligence Engine) │
├─────────────────────────────────────────┤
│ Memory │ Vector │ Metadata │
│ Cache │ Index │ Index │
└─────────────┬───────────────────────────┘
┌─────────────▼───────────────────────────┐
│ Storage Layer │
├──────────┬──────────┬──────────────────┤
│ Vectors │ Graph │ Files │
│ (sharded)│ Edges │ (filesystem) │
└──────────┴──────────┴──────────────────┘
```
For off-site replication, snapshot `path` from your scheduler (`gsutil rsync`, `aws s3 sync`, `rclone`, or `tar`).
### Performance at Scale
- **Metadata queries**: O(1) HashMap
- **Graph traversal**: O(1) adjacency lookup
- **Vector search**: O(log n)
- **Write throughput**: 50K+ writes/second per process (filesystem, batched)
- **Read throughput**: 1M+ reads/second with caching
### Zero-Config with Autoscaling
- **AutoConfiguration System**: Detects environment and adjusts settings
- **Learning from Performance**: `learnFromPerformance()` adapts based on metrics
- **Auto-flush**: Graph index (30s), Metadata index (configurable)
- **Auto-optimize**: Enabled by default in graph and vector indices
- **Zero-config presets**: Production, development, minimal modes
- **Adaptive memory**: Scales caches based on available memory
## Implementation Status
### Fully Implemented and Production-Ready
- **O(1) metadata lookups** via HashMaps (exact match)
- **O(log n) range queries** via sorted arrays with lazy building
- **O(1) graph traversal** via adjacency maps
- **O(log n) vector search** via the default JS index, swappable for a native provider
- **220 NLP patterns** with pre-computed embeddings
- **Filesystem and memory storage** adapters
- **Auto-configuration system** with environment detection
- **Zero-config operation** with intelligent defaults
- **Auto-flush and auto-optimize** in indices
- **Low-latency Triple Intelligence queries** (O(log n) vector + O(1) metadata/graph)
## Conclusion
Brainy delivers on its promise of **production-ready Triple Intelligence** with documented algorithmic-complexity guarantees and a committed graph-scale benchmark (`tests/performance/graph-scale-performance.test.ts`). All listed features are fully implemented and tested. No stubs, no mocks — just real, working code with characterized performance.

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@ -1,101 +0,0 @@
# Performance and Logging Fixes for Brainy
## Overview
This document outlines the fixes implemented to address pagination warnings and improve performance in the Brainy framework.
## Issues Addressed
### 1. Pagination Warnings
The following warnings were appearing when using Brainy in dependent projects:
```
WARNING: Only returning the first 1000 nodes. There are more nodes available. Use getNodesWithPagination() for proper pagination.
Storage adapter does not support pagination, falling back to loading all nouns. This may cause performance issues with large datasets.
WARNING: getAllNodes() is deprecated and will be removed in a future version. Use getNodesWithPagination() instead.
```
### 2. Root Causes
1. **Missing Pagination Support**: The S3 storage adapter didn't expose a `getNounsWithPagination()` method, causing the base storage to fall back to `getAllNouns_internal()`.
2. **Deprecation Warning Logic**: The `getAllNouns_internal()` method was calling the deprecated `getAllNodes()` method, which triggered deprecation warnings.
3. **Inefficient Data Loading**: The fallback approach could load all data into memory, causing performance issues with large datasets.
## Solutions Implemented
### 1. Updated S3 Storage Adapter
**File**: `src/storage/adapters/s3CompatibleStorage.ts`
- Modified `getAllNouns_internal()` to use the paginated `getNodesWithPagination()` method instead of the deprecated `getAllNodes()`.
- Added `getNounsWithPagination()` method to properly support pagination with filtering.
```typescript
public async getNounsWithPagination(options: {
limit?: number
cursor?: string
filter?: {
nounType?: string | string[]
service?: string | string[]
metadata?: Record<string, any>
}
} = {}): Promise<{
items: HNSWNoun[]
totalCount?: number
hasMore: boolean
nextCursor?: string
}>
```
### 2. Created Optimized S3 Search Module
**File**: `src/storage/adapters/optimizedS3Search.ts`
A new module that provides:
- Efficient pagination using S3's ListObjectsV2 command
- Parallel batch loading for better performance
- Support for complex filtering without loading all data
- Proper cursor-based pagination for large datasets
### 3. Improved Base Storage Logic
**File**: `src/storage/baseStorage.ts`
- The base storage now properly detects when adapters support pagination
- Falls back gracefully when pagination isn't supported
- Limits the amount of data loaded to prevent memory issues
## Benefits
1. **Eliminated Warnings**: No more deprecation warnings in dependent projects.
2. **Better Performance**: Pagination prevents loading entire datasets into memory.
3. **Improved Scalability**: Can handle large datasets efficiently.
4. **Backward Compatibility**: Existing code continues to work without changes.
## Usage in Dependent Projects
Your code in github-package is already using the correct approach:
```typescript
const response = await brainy.getNouns({
pagination: { limit: 10, offset: 0 },
filter: { nounType: 'Template' }
})
```
With these fixes, this will now:
- Use proper pagination without warnings
- Load only the requested data
- Support efficient filtering
## Future Improvements
1. **Native S3 Filtering**: Implement server-side filtering using S3 object tags or metadata.
2. **Index-based Search**: Create indexes for common query patterns.
3. **Caching Layer**: Add intelligent caching to reduce S3 API calls.
4. **Streaming Support**: For very large datasets, implement streaming APIs.
## Migration Notes
No changes are required in dependent projects. The fixes are backward compatible and will automatically improve performance and eliminate warnings.

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@ -1,550 +0,0 @@
# Performance Features Guide
This guide covers the advanced performance features added in Brainy v0.38.1+ that dramatically improve search speed and pagination capabilities, including intelligent auto-configuration.
## 🤖 Intelligent Auto-Configuration (NEW!)
**Brainy now configures itself automatically!** The new auto-configuration system detects your environment and usage patterns, then optimally configures caching and real-time updates with zero manual setup required.
### How It Works
- **🔍 Environment Detection**: Automatically detects browser, Node.js, serverless, or distributed scenarios
- **📊 Usage Pattern Analysis**: Learns from your read/write patterns and data change frequency
- **⚡ Real-Time Adaptation**: Continuously monitors performance and adjusts settings automatically
- **🌐 Distributed Mode Awareness**: Detects shared storage scenarios and enables real-time updates
- **🎯 Zero Configuration**: Works perfectly out of the box, but respects explicit settings
### Automatic Optimizations
```javascript
// Just create a Brainy instance - everything is optimized automatically!
const brainy = new BrainyData()
await brainy.init()
// Auto-configuration analyzes your environment and optimizes:
// ✅ Cache size based on available memory
// ✅ Cache TTL based on data change frequency
// ✅ Real-time updates for distributed storage
// ✅ Read vs write workload optimization
// ✅ Memory constraint handling
```
### Configuration Explanations
Enable verbose logging to see what optimizations are being applied:
```javascript
const brainy = new BrainyData({
logging: { verbose: true }
})
await brainy.init()
// Console output:
// 🤖 Brainy Auto-Configuration:
//
// 📊 Cache: 100 queries, 300s TTL
// 🔄 Updates: Every 30s
//
// 🎯 Optimizations applied:
// • Read-heavy workload detected - increased cache size and TTL
// • Distributed storage detected - enabled real-time updates
// • Reduced cache TTL for distributed consistency
```
### Manual Override (Optional)
Auto-configuration respects your explicit settings when provided:
```javascript
const brainy = new BrainyData({
// Explicit settings override auto-configuration
searchCache: {
maxSize: 500,
maxAge: 600000
},
realtimeUpdates: {
enabled: true,
interval: 15000
}
})
```
### Performance Scenarios
**🏠 Local Development**
- Large cache with long TTL for best performance
- Real-time updates disabled (not needed for single instance)
**🌐 Distributed Production**
- Shorter cache TTL for data consistency
- Real-time updates enabled automatically
- Adaptive intervals based on change frequency
**💾 Memory-Constrained Environments**
- Smaller cache sizes with intelligent eviction
- Optimized for essential caching only
**📈 High-Traffic Applications**
- Larger caches with hit-count weighted eviction
- Performance monitoring and auto-adaptation
## 🚀 Smart Search Caching
Brainy includes intelligent result caching that can make repeated queries **100x faster** with zero code changes required.
### How It Works
- **Automatic**: Caching is enabled by default and works transparently
- **Intelligent**: Only caches successful search results
- **Self-Maintaining**: Automatically invalidates when data changes
- **Memory-Conscious**: LRU eviction prevents memory bloat
### Performance Impact
```javascript
// First search: ~50ms (database query)
const results1 = await brainy.search('machine learning', 10)
// Second identical search: <1ms (cache hit!)
const results2 = await brainy.search('machine learning', 10)
```
### Configuration Options
```javascript
const brainy = new BrainyData({
searchCache: {
enabled: true, // Enable/disable caching (default: true)
maxSize: 100, // Max number of cached queries (default: 100)
maxAge: 300000, // Cache TTL in milliseconds (default: 5 minutes)
hitCountWeight: 0.3 // Weight for hit count in eviction (default: 0.3)
}
})
```
### Cache Monitoring
```javascript
// Get performance statistics
const stats = brainy.getCacheStats()
console.log(`Hit rate: ${(stats.search.hitRate * 100).toFixed(1)}%`)
console.log(`Cache size: ${stats.search.size}/${stats.search.maxSize}`)
console.log(`Memory usage: ${(stats.searchMemoryUsage / 1024).toFixed(1)}KB`)
// Manual cache management
brainy.clearCache() // Clear all cached results
```
### Real-Time Data Compatibility
**The cache automatically maintains data consistency:**
#### 🏠 **Single Instance (Local Changes)**
- ✅ Adding new data invalidates all caches
- ✅ Updating metadata invalidates related caches
- ✅ Deleting data invalidates all caches
- ✅ Clearing database invalidates all caches
#### 🌐 **Distributed Mode (Shared S3 Storage)**
- ✅ **Real-time updates detect external changes** automatically
- ✅ **Cache invalidation on external data changes**
- ✅ **Time-based cache expiration** as safety net
- ✅ **Periodic cache cleanup** removes stale entries
```javascript
// Enable real-time updates for distributed scenarios
const brainy = new BrainyData({
storage: {
s3Storage: { bucketName: 'shared-bucket' }
},
searchCache: {
maxAge: 300000 // 5 minutes - shorter in distributed mode
},
realtimeUpdates: {
enabled: true, // Essential for shared storage
interval: 30000, // Check every 30 seconds
updateIndex: true, // Update local index with external changes
updateStatistics: true
}
})
```
This ensures you get fresh results even when other services add data to shared storage, while still benefiting from caching performance.
### Cache Invalidation Strategies
```javascript
// Disable caching for specific queries
const freshResults = await brainy.search('query', 10, { skipCache: true })
// The cache uses smart invalidation patterns:
await brainy.add(newData) // Invalidates all search caches
await brainy.updateMetadata(id) // Invalidates all search caches
await brainy.delete(id) // Invalidates all search caches
```
## 📄 Cursor-Based Pagination
For large result sets, cursor-based pagination provides constant-time performance regardless of page depth.
### Traditional Offset Problems
```javascript
// Traditional offset pagination gets slower with depth
const page1 = await brainy.search('query', 10, { offset: 0 }) // Fast
const page2 = await brainy.search('query', 10, { offset: 10 }) // Still fast
const page100 = await brainy.search('query', 10, { offset: 1000 }) // Slow!
```
### Cursor Solution
```javascript
// Cursor pagination is constant time for any depth
const page1 = await brainy.searchWithCursor('query', 10)
console.log(`Found ${page1.results.length} results`)
console.log(`Has more: ${page1.hasMore}`)
if (page1.hasMore) {
// Next page is just as fast as the first
const page2 = await brainy.searchWithCursor('query', 10, {
cursor: page1.cursor
})
}
```
### Advanced Pagination Features
```javascript
// Get total count estimate when available
const page = await brainy.searchWithCursor('query', 50)
if (page.totalEstimate) {
console.log(`Showing 50 of ~${page.totalEstimate} results`)
}
// Cursor contains debug information
if (page.cursor) {
console.log(`Cursor position: ${page.cursor.position}`)
console.log(`Last result ID: ${page.cursor.lastId}`)
console.log(`Last score: ${page.cursor.lastScore}`)
}
```
### Pagination Best Practices
1. **Use cursors for deep pagination** (page 10+)
2. **Use offset for UI with page numbers** (page 1-10)
3. **Cache cursor objects** for navigation
4. **Handle cursor expiration** gracefully
```javascript
// Robust cursor pagination with error handling
async function paginateResults(query, pageSize = 20) {
const results = []
let cursor = undefined
let pageCount = 0
do {
try {
const page = await brainy.searchWithCursor(query, pageSize, { cursor })
results.push(...page.results)
cursor = page.cursor
pageCount++
// Safety limit
if (pageCount > 100) break
} catch (error) {
console.warn('Cursor may be expired, starting fresh')
cursor = undefined
break
}
} while (cursor)
return results
}
```
## 🔧 Performance Tuning
### Cache Sizing
```javascript
// For high-traffic applications
const brainy = new BrainyData({
searchCache: {
maxSize: 500, // Cache more queries
maxAge: 600000, // Keep cache longer (10 minutes)
}
})
// For memory-constrained environments
const brainy = new BrainyData({
searchCache: {
maxSize: 50, // Smaller cache
maxAge: 120000, // Shorter TTL (2 minutes)
}
})
```
### Cache Warming
```javascript
// Pre-warm cache with common queries
const commonQueries = [
'machine learning',
'artificial intelligence',
'data science',
'neural networks'
]
// Warm up cache in background
for (const query of commonQueries) {
brainy.search(query, 10).catch(console.warn)
}
```
### Performance Monitoring
```javascript
// Set up performance monitoring
setInterval(() => {
const stats = brainy.getCacheStats()
if (stats.search.hitRate < 0.3) {
console.warn('Low cache hit rate:', stats.search.hitRate)
}
if (stats.searchMemoryUsage > 50 * 1024 * 1024) { // 50MB
console.warn('High cache memory usage')
brainy.clearCache() // Reset if getting too large
}
}, 60000) // Check every minute
```
## 🎯 Migration Guide
### From Offset to Cursors
```javascript
// Before (offset-based)
async function getAllResults(query) {
const results = []
let offset = 0
const pageSize = 100
while (true) {
const page = await brainy.search(query, pageSize, { offset })
if (page.length === 0) break
results.push(...page)
offset += pageSize // Gets slower each iteration
}
return results
}
// After (cursor-based)
async function getAllResults(query) {
const results = []
let cursor = undefined
const pageSize = 100
while (true) {
const page = await brainy.searchWithCursor(query, pageSize, { cursor })
if (page.results.length === 0) break
results.push(...page.results)
cursor = page.cursor // Constant time each iteration
if (!page.hasMore) break
}
return results
}
```
### Backward Compatibility
**All existing code continues to work unchanged:**
```javascript
// These still work exactly as before
const results = await brainy.search('query', 10)
const page2 = await brainy.search('query', 10, { offset: 10 })
// But now they benefit from caching automatically!
```
## 📊 Performance Benchmarks
### Cache Performance
| Scenario | Without Cache | With Cache | Improvement |
|----------|---------------|------------|-------------|
| Repeated identical queries | 50ms | <1ms | **50x faster** |
| Similar queries with filters | 45ms | <1ms | **45x faster** |
| Paginated results (cached) | 30ms | <1ms | **30x faster** |
### Pagination Performance
| Page Depth | Offset-Based | Cursor-Based | Improvement |
|------------|--------------|--------------|-------------|
| Page 1-10 | 10-50ms | 10-50ms | Same |
| Page 50 | 200ms | 50ms | **4x faster** |
| Page 100 | 500ms | 50ms | **10x faster** |
| Page 1000 | 5000ms | 50ms | **100x faster** |
These improvements compound in real applications where users frequently:
- Repeat searches
- Navigate deep into result sets
- Use similar search terms
- Browse paginated data
The performance gains are most dramatic in read-heavy applications with repeated access patterns.
## 🌐 Distributed Storage Considerations
When multiple services write to shared storage (like S3), special considerations apply to maintain cache consistency.
### Problem: External Data Changes
```javascript
// Service A writes data
await serviceA.add("New important data")
// Service B searches (may get stale cached results!)
const results = await serviceB.search("important data", 10)
// Without proper configuration, Service B might miss the new data
```
### Solution: Real-Time Updates + Smart Caching
```javascript
// Configure both services for distributed mode
const sharedConfig = {
storage: {
s3Storage: {
bucketName: 'shared-data-bucket',
// ... S3 credentials
}
},
searchCache: {
enabled: true,
maxAge: 180000, // 3 minutes (shorter for distributed)
maxSize: 100
},
realtimeUpdates: {
enabled: true, // ⚠️ ESSENTIAL for shared storage
interval: 30000, // Check every 30 seconds
updateIndex: true, // Sync external changes to local index
updateStatistics: true
}
}
const serviceA = new BrainyData(sharedConfig)
const serviceB = new BrainyData(sharedConfig)
```
### How It Works
1. **Service A** adds data to shared S3 storage
2. **Service B** checks for changes every 30 seconds
3. **External changes detected** → cache invalidated → fresh results guaranteed
4. **Time-based expiration** provides additional safety net
### Performance Impact in Distributed Mode
| Scenario | Local Instance | Distributed Mode | Notes |
|----------|----------------|------------------|-------|
| Cache hits (no external changes) | <1ms | <1ms | Same performance |
| External changes detected | 50ms | 50ms + detection delay | Still very fast |
| Cache expiration | 50ms | 50ms | Automatic cleanup |
| Real-time update overhead | 0ms | ~5ms per check | Minimal impact |
### Best Practices for Distributed Caching
#### ✅ **Do This:**
```javascript
// Shorter cache TTL for distributed scenarios
searchCache: { maxAge: 180000 } // 3 minutes vs 5 minutes
// Enable real-time updates
realtimeUpdates: { enabled: true, interval: 30000 }
// Monitor cache stats
setInterval(() => {
const stats = brainy.getCacheStats()
console.log(`Cache hit rate: ${stats.search.hitRate}`)
}, 60000)
```
#### ❌ **Avoid This:**
```javascript
// DON'T: Disable real-time updates with shared storage
realtimeUpdates: { enabled: false } // ⚠️ Will cause stale data!
// DON'T: Very long cache TTL in distributed mode
searchCache: { maxAge: 3600000 } // 1 hour - too long!
// DON'T: Ignore external changes
const results = await brainy.search('query', 10, { skipCache: false })
// Without real-time updates, this might be stale
```
### Monitoring Distributed Cache Health
```javascript
// Set up monitoring for distributed scenarios
const brainy = new BrainyData({
// ... distributed config
logging: { verbose: true } // See cache invalidation logs
})
// Monitor cache effectiveness
setInterval(() => {
const stats = brainy.getCacheStats()
// Warn if hit rate is too low (suggests frequent external changes)
if (stats.search.hitRate < 0.2) {
console.warn('Low cache hit rate in distributed mode:', stats.search.hitRate)
console.warn('Consider increasing real-time update frequency')
}
// Warn if external changes are frequent
const updateConfig = brainy.getRealtimeUpdateConfig()
if (updateConfig.enabled) {
console.log('Real-time updates active - external changes will be detected')
}
}, 300000) // Check every 5 minutes
```
### Trade-offs and Tuning
**More Frequent Updates (every 10-15 seconds):**
- ✅ Faster detection of external changes
- ✅ More consistent data across services
- ❌ Higher CPU/network overhead
- ❌ More frequent cache invalidations
**Less Frequent Updates (every 60+ seconds):**
- ✅ Lower overhead
- ✅ Better cache hit rates
- ❌ Slower detection of external changes
- ❌ Potential stale data windows
**Recommended Settings by Use Case:**
```javascript
// High-consistency requirements (financial, medical)
realtimeUpdates: { interval: 15000 } // 15 seconds
searchCache: { maxAge: 120000 } // 2 minutes
// Balanced (most applications)
realtimeUpdates: { interval: 30000 } // 30 seconds
searchCache: { maxAge: 300000 } // 5 minutes
// Performance-first (analytics, logging)
realtimeUpdates: { interval: 60000 } // 1 minute
searchCache: { maxAge: 600000 } // 10 minutes
```

486
docs/PLUGINS.md Normal file
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@ -0,0 +1,486 @@
---
title: Plugin System
slug: guides/plugins
public: true
category: guides
template: guide
order: 4
description: Replace any Brainy subsystem — distance functions, embeddings, vector index, metadata index, aggregation — with a custom implementation or optional native acceleration.
next:
- guides/storage-adapters
---
# Plugin Development Guide
Brainy has a plugin system that allows third-party packages to replace internal subsystems with custom implementations. This is how `@soulcraft/cor` provides optional native acceleration, and it's the same system available to any developer.
## Architecture Overview
Brainy's plugin system uses **named providers** — string keys mapped to implementations. During `init()`, brainy:
1. Imports each package listed in the `plugins` config array
2. Activates each plugin, passing a `BrainyPluginContext`
3. The plugin calls `context.registerProvider(key, implementation)` for each subsystem it provides
4. Brainy checks each provider key and wires the implementation into its internal pipeline
Installing the first-party accelerator is the opt-in: with the default config, brainy probes for `@soulcraft/cor` and loads it when present. Everything except "not installed" fails **loud** — a present-but-broken accelerator makes `init()` throw rather than silently degrading to the JS engines.
```typescript
const brain = new Brainy() // @soulcraft/cor auto-detected when installed
const pinned = new Brainy({ plugins: ['@soulcraft/cor'] }) // or pin exactly what loads
const plain = new Brainy({ plugins: [] }) // or opt out of detection entirely
```
| `plugins` value | Behavior |
|---|---|
| `undefined` (default) | Guarded auto-detection of `@soulcraft/cor`: not installed → no plugins, silently; installed → loads + announces; installed-but-broken → `init()` throws |
| `false` / `[]` | No plugins, no detection (explicit opt-out) |
| `['@soulcraft/cor']` | Load only the listed packages; a listed plugin that fails to load throws |
Plugins registered programmatically via `brain.use(plugin)` are always activated regardless of the `plugins` config.
If no plugin provides a given key, brainy uses its built-in JavaScript implementation. This means brainy works perfectly standalone — plugins only enhance performance or add capabilities.
## Creating a Plugin
### 1. Implement the `BrainyPlugin` interface
```typescript
import type { BrainyPlugin, BrainyPluginContext } from '@soulcraft/brainy/plugin'
const myPlugin: BrainyPlugin = {
name: 'my-brainy-plugin', // Must be unique (typically your npm package name)
async activate(context: BrainyPluginContext): Promise<boolean> {
// Register your providers here
context.registerProvider('distance', myFastDistanceFunction)
// Return true if activation succeeded, false to skip
return true
},
async deactivate(): Promise<void> {
// Optional cleanup when brainy.close() is called
}
}
export default myPlugin
```
### 2. Package exports
Your package must export the plugin as the default export so brainy's plugin loader can resolve it:
```typescript
// index.ts
export { default } from './plugin.js'
```
### 3. Registration
**Config-based:** List your package name in the brainy config:
```typescript
const brain = new Brainy({
plugins: ['my-brainy-plugin']
})
await brain.init()
```
**Programmatic registration:** For plugins not installed as npm packages, use `brain.use()`:
```typescript
import { Brainy } from '@soulcraft/brainy'
import myPlugin from './my-plugin.js'
const brain = new Brainy()
brain.use(myPlugin)
await brain.init()
```
## Provider Keys Reference
Each key has a specific expected signature. Brainy checks for these during `init()` and wires them into the appropriate code paths.
### Core Providers
#### `distance`
**Type:** `(a: number[], b: number[]) => number`
Replaces the default cosine distance function used in vector search and neural APIs. This is the highest-impact single provider — it's called for every vector comparison.
```typescript
context.registerProvider('distance', (a: number[], b: number[]): number => {
// Your SIMD-accelerated or GPU distance calculation
return myFastCosineDistance(a, b)
})
```
#### `embeddings`
**Type:** `(text: string | string[]) => Promise<number[] | number[][]>`
Replaces the built-in WASM embedding engine. Called for every `brain.add()`, `brain.update()`, and `brain.find()` operation that involves text.
```typescript
context.registerProvider('embeddings', async (text: string | string[]) => {
if (Array.isArray(text)) {
return myEngine.embedBatch(text)
}
return myEngine.embed(text)
})
```
#### `embedBatch`
**Type:** `(texts: string[]) => Promise<number[][]>`
Dedicated batch embedding provider. When registered, brainy uses this for bulk operations (import, reindex, batch add) instead of calling the `embeddings` provider N times. This enables true single-forward-pass batch processing.
Priority order for batch operations:
1. `embedBatch` provider (single forward pass — fastest)
2. `embeddings` provider with `Promise.all()` (N individual calls)
3. Built-in WASM batch API (fallback)
```typescript
context.registerProvider('embedBatch', async (texts: string[]) => {
// Process all texts in a single forward pass
return myEngine.batchEmbed(texts)
})
```
### Index Providers
> **Write-path invariant (the change-feed contract).** Every canonical
> mutation flows through Brainy's generation-store commit points — index
> providers are invoked *inside* that commit and never originate canonical
> writes of their own. The `brain.onChange` change feed is emitted from those
> commit points and relies on this: **a plugin must never introduce a write
> path that bypasses the generation-store commit.** If a future provider ever
> needs a direct native ingest path, it must either route through the commit
> or emit equivalent change events — otherwise every `onChange` consumer
> (live UIs, cache invalidation, realtime sync) silently develops a blind
> spot.
#### `vector`
**Type:** `(config: object, distanceFunction: Function, options: object) => VectorIndexProvider-compatible`
Factory function that creates a vector index instance. The returned object must implement the `VectorIndexProvider` public API:
- `addItem(item: { id: string, vector: number[] }): Promise<string>`
- `search(queryVector: number[], k: number, filter?, options?): Promise<Array<[string, number]>>`
- `removeItem(id: string): Promise<boolean>`
- `size(): number`
- `clear(): void`
- `flush(): Promise<number>`
- `rebuild(options?): Promise<void>`
- `getDirtyNodeCount(): number`
- `getPersistMode(): 'immediate' | 'deferred'`
- `getEntryPointId(): string | null`
- `getMaxLevel(): number`
- `getDimension(): number | null`
- `getConfig(): object`
- `getDistanceFunction(): Function`
- `enableCOW(parent): void`
- `setUseParallelization(boolean): void`
For type-aware indexes (separate graph per noun type), also implement:
- `getIndexForType(type: string): VectorIndexProvider` (duck-typed detection)
- `search(queryVector, k, type?, filter?, options?): Promise<Array<[string, number]>>`
```typescript
context.registerProvider('vector', (config, distanceFn, options) => {
return new MyNativeVectorIndex(config, distanceFn, options)
})
```
#### The readiness contract (all three index providers)
A provider that **persists its derived index** should implement the optional readiness
members so a warm reopen never pays a redundant rebuild-from-canonical:
- **`init?(): Promise<void>`** — eager cold-load. Brainy awaits it once during
`brain.init()`, after the metadata provider's `init()` (the id-mapper hydrates first)
and **before the rebuild gate**.
- **`isReady?(): boolean`** — honest durability signal. `true` ⇔ the persisted index is
loaded (or cheaply demand-loadable) and consistent with what was last persisted. When
exposed, the rebuild gate defers to this signal **instead of** the `size() === 0` /
`totalEntries === 0` heuristics — a disk-native index may report 0 resident entries
while fully durable. Never return `true` if the durable state failed to load: the
signal is honest in both directions, and a not-ready provider gets its rebuild even
when `size() > 0`.
- **`isMigrating?(): boolean`** — while `true`, the provider owns its index (background
migration); brainy skips its rebuild entirely.
Providers that implement none of these keep the size/count heuristics — correct for
engines whose `rebuild()` *is* their load path (like brainy's built-in JS vector index).
#### `metadataIndex`
**Type:** `(storage: StorageAdapter) => MetadataIndexManager-compatible`
Factory function that creates a metadata index. The returned object must implement the `MetadataIndexManager` interface including `init()`, `addEntity()`, `removeEntity()`, `query()`, `flush()`, `clear()`, etc.
```typescript
context.registerProvider('metadataIndex', (storage) => {
return new MyNativeMetadataIndex(storage)
})
```
#### `graphIndex`
**Type:** `(storage: StorageAdapter) => GraphAdjacencyIndex-compatible`
Factory function that creates a graph adjacency index for relationship tracking (verbs/triples). Must implement the `GraphAdjacencyIndex` interface including `addVerb()`, `getVerbsBySource()`, `getVerbsByTarget()`, `flush()`, etc.
```typescript
context.registerProvider('graphIndex', (storage) => {
return new MyNativeGraphIndex(storage)
})
```
#### `aggregation`
**Type:** `(storage: StorageAdapter) => AggregationProvider-compatible`
Factory function that creates an aggregation engine for write-time incremental SUM/COUNT/AVG/MIN/MAX with GROUP BY and time windows. The returned object must implement the `AggregationProvider` interface.
```typescript
context.registerProvider('aggregation', (storage) => {
return new MyNativeAggregationEngine(storage)
})
```
When provided by an optional native acceleration plugin (such as `@soulcraft/cor`), this enables:
- Compiled source filters (vs per-entity JS object traversal)
- Precise MIN/MAX via sorted data structures (vs lazy recompute)
- Parallel aggregate rebuild across CPU cores
- SIMD-accelerated timestamp bucketing
### Utility Providers
#### `cache`
**Type:** `UnifiedCache`
Replaces the global `UnifiedCache` singleton used for VFS path resolution, semantic caching, and vector index caching. Must implement the `UnifiedCache` interface (available from `@soulcraft/brainy/internals`).
```typescript
import type { UnifiedCache } from '@soulcraft/brainy/internals'
context.registerProvider('cache', myNativeCache)
```
#### `entityIdMapper`
**Type:** `(storage: StorageAdapter) => EntityIdMapper-compatible`
Factory for bidirectional UUID ↔ integer mapping used by roaring bitmaps. Must implement `getOrAssign()`, `getUuid()`, `getInt()`, `has()`, `remove()`, `flush()`, `clear()`.
#### `roaring`
**Type:** `RoaringBitmap32 class`
Replacement for the roaring bitmap implementation. Used internally by the metadata index for set operations. Must be API-compatible with `roaring-wasm`.
#### `msgpack`
**Type:** `{ encode: (data: any) => Buffer, decode: (buffer: Buffer) => any }`
Native msgpack encode/decode for SSTable serialization.
### Analytics Providers (Native-Only)
These provider keys have **no JavaScript fallback** — they represent capabilities that require native code (SIMD, mmap, sub-microsecond latency). They are available when an optional native acceleration plugin (such as `@soulcraft/cor`) is installed.
Use `brain.getProvider('analytics:hyperloglog')` to check availability. Returns `undefined` if no plugin provides it.
#### `analytics:hyperloglog`
Approximate distinct counts. Count unique values (e.g., unique merchants) across millions of records using ~16KB of memory with ~1% error. Each update is O(1).
#### `analytics:tdigest`
Streaming percentiles. Compute P50/P90/P95/P99 from streaming data without storing all values. Uses ~4KB per digest with ~1% accuracy at the tails.
#### `analytics:countmin`
Frequency estimation. Find the most common values (e.g., top-K merchants) using ~40KB with 0.1% error. O(1) per update.
#### `analytics:anomaly`
Real-time anomaly detection. Flag statistically unusual values at write-time using exponentially weighted moving averages. 64 bytes per group, sub-microsecond decisions.
#### `aggregation:mmap`
Persistent aggregate storage via memory-mapped files. Aggregate state survives process crashes without explicit flush. Zero serialization overhead.
---
## Storage Adapter Plugins
Plugins can register custom storage backends that users reference by name.
### Implementing a Storage Adapter
```typescript
import type { StorageAdapterFactory } from '@soulcraft/brainy/plugin'
import type { StorageAdapter } from '@soulcraft/brainy'
class MyStorageAdapter implements StorageAdapter {
async init(): Promise<void> { /* ... */ }
async saveNoun(noun: HNSWNoun): Promise<void> { /* ... */ }
async getNoun(id: string): Promise<HNSWNounWithMetadata | null> { /* ... */ }
async deleteNoun(id: string): Promise<void> { /* ... */ }
// ... implement all StorageAdapter methods
}
```
### Registering a Storage Adapter
```typescript
context.registerProvider('storage:my-backend', {
name: 'my-backend',
create: (config: Record<string, unknown>) => {
return new MyStorageAdapter(config)
}
} satisfies StorageAdapterFactory)
```
Users can then use your storage:
```typescript
const brain = new Brainy({ storage: 'my-backend', myBackendOption: 'value' })
```
## Import Paths
Brainy provides three entry points for plugin developers:
| Import Path | Contents | Stability |
|-------------|----------|-----------|
| `@soulcraft/brainy` | Public API, types, StorageAdapter | Stable (semver) |
| `@soulcraft/brainy/plugin` | BrainyPlugin, BrainyPluginContext, StorageAdapterFactory | Stable (semver) |
| `@soulcraft/brainy/internals` | UnifiedCache, EntityIdMapper, logger utilities | Internal (may change between minor versions) |
## Diagnostics
Brainy provides a `diagnostics()` method to verify plugin wiring:
```typescript
const brain = new Brainy()
await brain.init()
const diag = brain.diagnostics()
console.log(diag)
// {
// version: '7.14.0',
// plugins: { active: ['my-plugin'], count: 1 },
// providers: {
// metadataIndex: { source: 'default' },
// graphIndex: { source: 'default' },
// embeddings: { source: 'plugin' },
// embedBatch: { source: 'plugin' },
// distance: { source: 'plugin' },
// vector: { source: 'default' },
// ...
// },
// indexes: {
// vector: { size: 0, type: 'JsHnswVectorIndex' },
// metadata: { type: 'MetadataIndexManager', initialized: true },
// graph: { type: 'GraphAdjacencyIndex', initialized: true, wiredToStorage: true }
// }
// }
```
The CLI also supports diagnostics:
```bash
brainy diagnostics
```
### Init-Time Summary
When a plugin is active, brainy automatically logs a provider summary after `init()`:
```
[brainy] Plugin activated: @soulcraft/cor
[brainy] Providers: 8/10 native (@soulcraft/cor) | default: vector, cache
```
This tells you at a glance how many subsystems are accelerated and which ones are falling back to JavaScript. The log respects `config.silent`.
### Fail-Fast for Production
Use `requireProviders()` after `init()` to guarantee specific providers are plugin-supplied. This prevents silent fallback to JavaScript in deployments where you expect native acceleration:
```typescript
const brain = new Brainy()
await brain.init()
// Throws immediately if any of these are using JS fallback
brain.requireProviders(['distance', 'embeddings', 'metadataIndex', 'graphIndex'])
```
If a required provider is missing, the error message tells you exactly what's wrong:
```
[brainy] Required providers using JS fallback: graphIndex.
Active plugins: @soulcraft/cor.
These providers must be supplied by a plugin for this deployment.
Check plugin installation, license, and native module availability.
```
This is the recommended pattern for production deployments with paid plugins — fail at startup rather than silently degrading performance.
## Complete Example: Distance Acceleration Plugin
A minimal but useful plugin that provides SIMD-accelerated distance calculations:
```typescript
// simd-distance-plugin/src/plugin.ts
import type { BrainyPlugin, BrainyPluginContext } from '@soulcraft/brainy/plugin'
// Hypothetical native module
import { simdCosineDistance } from './native.js'
const simdDistancePlugin: BrainyPlugin = {
name: 'brainy-simd-distance',
async activate(context: BrainyPluginContext): Promise<boolean> {
// Check if SIMD is available on this platform
if (!checkSimdSupport()) {
console.log('[simd-distance] SIMD not available, skipping')
return false // Don't activate — brainy uses JS fallback
}
context.registerProvider('distance', simdCosineDistance)
return true
}
}
export default simdDistancePlugin
```
```json
// simd-distance-plugin/package.json
{
"name": "brainy-simd-distance",
"main": "./dist/plugin.js",
"types": "./dist/plugin.d.ts",
"peerDependencies": {
"@soulcraft/brainy": ">=7.0.0"
}
}
```
Usage:
```typescript
import { Brainy } from '@soulcraft/brainy'
const brain = new Brainy({ plugins: ['brainy-simd-distance'] })
await brain.init()
// Verify it's active
const diag = brain.diagnostics()
console.log(diag.providers.distance) // { source: 'plugin' }
```
## Design Principles
1. **Brainy works perfectly without plugins.** Every provider has a JavaScript fallback. Plugins only improve performance or add capabilities.
2. **Provider keys are string-based.** The plugin system is not coupled to any specific plugin. Any package can register any provider.
3. **Clean separation.** Plugins access brainy through the documented `BrainyPluginContext` interface. No direct access to internal classes is needed.
4. **Fail-safe activation.** If a plugin throws during `activate()`, brainy logs a warning and continues with defaults. A broken plugin never prevents brainy from working.
5. **Lifecycle management.** `deactivate()` is called during `brainy.close()` for resource cleanup. Native resources, connections, and file handles should be released here.

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@ -0,0 +1,562 @@
# Production Service Architecture Guide
**How to use Brainy optimally in production services (Bun, Node.js, Deno)**
> **Recommended Runtime:** [Bun](https://bun.sh) provides best performance with Brainy's Candle WASM engine. All examples work with both Bun and Node.js.
---
## The Problem: Instance-per-Request Anti-Pattern
### ❌ What NOT to Do
```typescript
// WRONG - Creates new instance EVERY request
app.get('/api/entities', async (req, res) => {
const brain = new Brainy({ storage: { path: './brainy-data' } })
await brain.init() // FULL INITIALIZATION EVERY TIME!
const entities = await brain.find(...)
res.json(entities)
})
```
### Why This is Terrible
After 40 API calls:
- **40 Brainy instances** running simultaneously
- **20GB memory** (40 × 500MB per instance)
- **2 seconds wasted** (40 × 50ms initialization)
- **Zero cache benefit** (each instance has its own empty cache)
- **Index rebuilding** on every request (TypeAware HNSW, LSM-trees, etc.)
- **Memory leaks** (old instances may not GC properly)
---
## ✅ The Solution: Singleton Pattern
**ONE Brainy instance per service, shared across ALL requests.**
### Performance Comparison
| Metric | Instance-per-Request | Singleton (Optimal) |
|--------|---------------------|---------------------|
| Memory (40 requests) | 20GB | 500MB |
| Request 1 latency | 60ms | 60ms (one-time init) |
| Request 2+ latency | 60ms (no cache!) | 2ms (80% cache hit!) |
| Cache hit rate | 0% | 80%+ |
| Speedup | - | **30x faster** |
---
## Implementation Patterns
### Pattern 1: Simple Singleton (Recommended)
```typescript
// server.ts
import { Brainy } from '@soulcraft/brainy'
// SINGLETON INSTANCE
let brainInstance: Brainy | null = null
async function getBrain(): Promise<Brainy> {
if (brainInstance) {
return brainInstance
}
console.log('🧠 Initializing Brainy singleton...')
brainInstance = new Brainy({
storage: {
path: './brainy-data',
autoOptimize: true
},
cache: {
maxSize: 1000, // Shared across ALL requests
ttl: 3600000, // 1 hour
enableMetrics: true
},
augmentations: {
include: ['cache', 'metrics', 'display', 'vfs']
}
})
await brainInstance.init()
console.log('✅ Brainy ready')
return brainInstance
}
// Initialize BEFORE starting server
async function startServer() {
await getBrain() // One-time initialization
app.get('/api/entities', async (req, res) => {
const brain = await getBrain() // Reuses same instance!
const entities = await brain.find(req.query)
res.json(entities)
})
app.listen(3000)
}
startServer()
```
**Benefits:**
- ✅ Simple to implement
- ✅ Thread-safe (async initialization)
- ✅ Shared cache and indexes
- ✅ 40x memory reduction
---
### Pattern 2: Service Class (Production-Grade)
```typescript
// services/BrainService.ts
export class BrainService {
private brain: Brainy | null = null
private initPromise: Promise<Brainy> | null = null
async getInstance(): Promise<Brainy> {
if (this.brain) return this.brain
if (this.initPromise) return this.initPromise
this.initPromise = this.initialize()
return this.initPromise
}
private async initialize(): Promise<Brainy> {
this.brain = new Brainy({
storage: {
path: process.env.BRAINY_DATA_PATH || './brainy-data'
},
cache: { maxSize: 1000, ttl: 3600000 }
})
await this.brain.init()
return this.brain
}
async shutdown(): Promise<void> {
if (this.brain) {
// Cleanup if needed
this.brain = null
}
}
}
// server.ts
const brainService = new BrainService()
app.get('/api/entities', async (req, res) => {
const brain = await brainService.getInstance()
const entities = await brain.find(req.query)
res.json(entities)
})
// Graceful shutdown
process.on('SIGTERM', async () => {
await brainService.shutdown()
process.exit(0)
})
```
**Benefits:**
- ✅ Prevents race conditions (multiple simultaneous inits)
- ✅ Testable (can inject mock)
- ✅ Clean shutdown handling
- ✅ Environment-configurable
---
### Pattern 3: Bun Server (Recommended)
```typescript
// server.ts - Clean Bun implementation
import { Brainy } from '@soulcraft/brainy'
let brain: Brainy | null = null
async function getBrain(): Promise<Brainy> {
if (!brain) {
brain = new Brainy({ storage: { path: './brainy-data' } })
await brain.init()
}
return brain
}
// Initialize before server starts
await getBrain()
Bun.serve({
port: 3000,
async fetch(req) {
const url = new URL(req.url)
if (url.pathname === '/api/entities') {
const b = await getBrain()
const entities = await b.find({})
return Response.json(entities)
}
if (url.pathname === '/api/entity' && req.method === 'POST') {
const b = await getBrain()
const body = await req.json()
const id = await b.add(body)
return Response.json({ id })
}
return new Response('Not Found', { status: 404 })
}
})
console.log('Server running on http://localhost:3000')
```
**Benefits:**
- ✅ Native Bun runtime performance
- ✅ No framework dependencies
- ✅ Pure WASM — no native binaries, bundler-friendly
- ✅ Built-in TypeScript support
### Pattern 4: Express/Node.js Middleware (Legacy)
```typescript
// middleware/brainy.ts
let brainInstance: Brainy | null = null
export async function initBrainy() {
if (!brainInstance) {
brainInstance = new Brainy({ storage: { path: './brainy-data' } })
await brainInstance.init()
}
}
export function brainMiddleware(req, res, next) {
if (!brainInstance) {
return res.status(500).json({ error: 'Brainy not initialized' })
}
req.brain = brainInstance // Attach to request
next()
}
// Type extension
declare global {
namespace Express {
interface Request {
brain: Brainy
}
}
}
// server.ts
import { initBrainy, brainMiddleware } from './middleware/brainy'
async function startServer() {
await initBrainy() // Initialize first
app.use('/api', brainMiddleware) // Apply to API routes
app.get('/api/entities', async (req, res) => {
const entities = await req.brain.find(req.query) // Type-safe!
res.json(entities)
})
app.listen(3000)
}
```
**Benefits:**
- ✅ Clean separation of concerns
- ✅ Type-safe (`req.brain` is typed)
- ✅ Easy to add auth/validation
---
## Optimization Strategies
### 1. Configure Cache for Your Workload
```typescript
const brain = new Brainy({
cache: {
maxSize: 1000, // Number of entities to cache
ttl: 3600000, // Cache lifetime (1 hour)
enableMetrics: true, // Track hit rate
evictionPolicy: 'lru' // Least recently used
}
})
```
**Cache sizing:**
- Small service (< 100 req/min): `maxSize: 500`
- Medium service (< 1000 req/min): `maxSize: 1000`
- Large service (> 1000 req/min): `maxSize: 5000`
### 2. Lazy Load Augmentations
```typescript
const brain = new Brainy({
augmentations: {
// Only load what you actually use
include: ['cache', 'metrics', 'display', 'vfs'],
exclude: ['neuralImport', 'intelligentImport'] // Skip heavy features
}
})
```
**Memory savings:**
- With all augmentations: ~800MB
- With minimal set: ~400MB
### 3. Warm Up Indexes
```typescript
async function startServer() {
const brain = await getBrain()
// Pre-warm frequently-used indexes
await brain.find({ type: 'person', limit: 1 })
await brain.find({ type: 'organization', limit: 1 })
console.log('✅ Indexes pre-warmed')
app.listen(3000)
}
```
**Benefit:** First requests are fast (no cold-start index building)
### 4. Memory-Aware Configuration
```typescript
import os from 'os'
const totalMemory = os.totalmem()
const availableMemory = os.freemem()
const brain = new Brainy({
cache: {
// Use 10% of total RAM for cache
maxSize: Math.floor(totalMemory * 0.1 / (1024 * 1024))
},
indexes: {
// Lazy load indexes if low memory
lazyLoad: availableMemory < totalMemory * 0.5,
preload: ['person', 'organization'] // Only preload common types
}
})
```
---
## Concurrency & Thread Safety
Brainy is **designed** for concurrent access. A single instance can handle:
```typescript
// Multiple concurrent requests - all using same instance
app.get('/api/read/:id', async (req, res) => {
const brain = getBrain()
const entity = await brain.get(req.params.id) // Safe - no state mutation
res.json(entity)
})
app.post('/api/write', async (req, res) => {
const brain = getBrain()
const id = await brain.add(req.body) // Safe - internal locking
res.json({ id })
})
```
**Concurrency mechanisms:**
- ✅ **Read operations**: Lock-free (MVCC)
- ✅ **Write operations**: Internal write-ahead logging (WAL)
- ✅ **Cache**: Thread-safe LRU implementation
- ✅ **Indexes**: Concurrent reads, locked writes
---
## Production Checklist
### Before Deploying
- [ ] **Initialize Brainy on startup** (not per-request)
- [ ] **Configure cache size** based on memory
- [ ] **Only load needed augmentations**
- [ ] **Warm up critical indexes**
- [ ] **Add graceful shutdown handler**
- [ ] **Monitor cache hit rate**
### Code Review Checklist
```typescript
// ❌ BAD - Instance per request
app.get('/api/route', async (req, res) => {
const brain = new Brainy(...) // RED FLAG!
await brain.init() // RED FLAG!
})
// ✅ GOOD - Singleton pattern
app.get('/api/route', async (req, res) => {
const brain = await getBrain() // Reuses instance ✓
})
```
---
## Monitoring & Metrics
```typescript
// Add metrics endpoint
app.get('/api/metrics', (req, res) => {
const brain = getBrain()
res.json({
cache: {
size: brain.cache?.size || 0,
maxSize: brain.cache?.maxSize || 0,
hitRate: brain.metrics?.cacheHitRate || 0 // Target: >70%
},
storage: brain.storage.getStats(),
memory: {
heapUsed: Math.round(process.memoryUsage().heapUsed / 1024 / 1024),
heapTotal: Math.round(process.memoryUsage().heapTotal / 1024 / 1024)
}
})
})
```
**Key metrics to track:**
- **Cache hit rate**: Should be >70% after warm-up
- **Memory usage**: Should stay constant (~500MB for singleton)
- **Request latency**: Should be <10ms for cached entities
---
## Common Pitfalls
### 1. Creating instances in routes
```typescript
// ❌ NEVER do this
app.get('/api/entities', async (req, res) => {
const brain = new Brainy(...) // Creates new instance every time!
})
```
### 2. Not awaiting initialization
```typescript
// ❌ Race condition - server starts before Brainy ready
app.listen(3000)
getBrain() // Async init happens AFTER server starts!
// ✅ Correct - wait for init
await getBrain()
app.listen(3000)
```
### 3. Multiple instances for different purposes
```typescript
// ❌ Wasteful - creates 2 instances
const readBrain = new Brainy(...)
const writeBrain = new Brainy(...)
// ✅ One instance handles both
const brain = new Brainy(...)
await brain.get(id) // Read
await brain.add(data) // Write
```
---
## Migration Guide
### Current (Anti-Pattern)
```typescript
// Probably in multiple route files
async function handler(req, res) {
const brain = new Brainy({ storage: { path: './brainy-data' } })
await brain.init()
// ... use brain
}
```
### Step 1: Create Singleton Module
```typescript
// lib/brainy.ts
let instance: Brainy | null = null
export async function getBrain(): Promise<Brainy> {
if (!instance) {
instance = new Brainy({ storage: { path: './brainy-data' } })
await instance.init()
}
return instance
}
```
### Step 2: Update Server Startup
```typescript
// server.ts
import { getBrain } from './lib/brainy'
async function startServer() {
// Initialize Brainy FIRST
await getBrain()
console.log('✅ Brainy initialized')
// THEN start server
app.listen(3000)
}
```
### Step 3: Update All Routes
```typescript
// Before
async function handler(req, res) {
const brain = new Brainy(...) // Remove this
await brain.init() // Remove this
// ... rest of code
}
// After
import { getBrain } from './lib/brainy'
async function handler(req, res) {
const brain = await getBrain() // Add this
// ... rest of code stays same
}
```
**Expected results:**
- ✅ 40x memory reduction (20GB → 500MB)
- ✅ 30x faster requests (60ms → 2ms average)
- ✅ 80%+ cache hit rate
- ✅ Your service can scale to 1000s of requests/minute
---
## Summary
**DO:**
- ✅ Initialize Brainy ONCE on server startup
- ✅ Share single instance across all requests
- ✅ Configure cache for your workload
- ✅ Monitor cache hit rate
- ✅ Handle graceful shutdown
**DON'T:**
- ❌ Create new Brainy instance per request
- ❌ Create multiple instances
- ❌ Start server before Brainy is initialized
- ❌ Load augmentations you don't use
**Result:** 40x less memory, 30x faster requests, Brainy optimizations actually work!
---
**Questions? Issues?**
- Report issues: https://github.com/soulcraftlabs/brainy/issues

298
docs/QUERY_OPERATORS.md Normal file
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# Query Operators (BFO)
> Brainy Field Operators — the complete reference for `where` filters in `find()`.
All operators work with `find({ where: { ... } })` and filter on **metadata fields** (not `data`).
---
## Equality
| Operator | Alias | Description | Example |
|----------|-------|-------------|---------|
| `eq` | `equals` | Exact match | `{ status: { eq: 'active' } }` |
| `ne` | `notEquals` | Not equal | `{ status: { ne: 'deleted' } }` |
**Shorthand:** A bare value is treated as `equals`:
```typescript
// These are equivalent:
brain.find({ where: { status: 'active' } })
brain.find({ where: { status: { equals: 'active' } } })
```
---
## Comparison
| Operator | Alias | Description | Example |
|----------|-------|-------------|---------|
| `gt` | `greaterThan` | Greater than | `{ age: { gt: 18 } }` |
| `gte` | `greaterThanOrEqual` | Greater or equal | `{ score: { gte: 90 } }` |
| `lt` | `lessThan` | Less than | `{ price: { lt: 100 } }` |
| `lte` | `lessThanOrEqual` | Less or equal | `{ rating: { lte: 3 } }` |
| `between` | — | Inclusive range `[min, max]` | `{ year: { between: [2020, 2025] } }` |
```typescript
// Range query
const recent = await brain.find({
where: {
createdAt: { between: [Date.now() - 86400000, Date.now()] }
}
})
```
---
## Array / Set
| Operator | Alias | Description | Example |
|----------|-------|-------------|---------|
| `oneOf` | `in` | Value is one of the given options | `{ color: { oneOf: ['red', 'blue'] } }` |
| `noneOf` | — | Value is NOT one of the given options | `{ status: { noneOf: ['deleted', 'archived'] } }` |
| `contains` | — | Array field contains value | `{ tags: { contains: 'ai' } }` |
| `excludes` | — | Array field does NOT contain value | `{ tags: { excludes: 'spam' } }` |
| `hasAll` | — | Array field contains ALL listed values | `{ skills: { hasAll: ['js', 'ts'] } }` |
```typescript
// Find entities tagged with 'ai'
const aiEntities = await brain.find({
where: { tags: { contains: 'ai' } }
})
// Find entities of specific types
const people = await brain.find({
where: { noun: { oneOf: ['Person', 'Agent'] } }
})
```
---
## Existence
| Operator | Description | Example |
|----------|-------------|---------|
| `exists: true` | Field exists (has any value) | `{ email: { exists: true } }` |
| `exists: false` | Field does NOT exist | `{ email: { exists: false } }` |
| `missing: true` | Field does NOT exist (alias for `exists: false`) | `{ email: { missing: true } }` |
| `missing: false` | Field exists (alias for `exists: true`) | `{ email: { missing: false } }` |
```typescript
// Find entities that have an email field
const withEmail = await brain.find({
where: { email: { exists: true } }
})
```
---
## Pattern (In-Memory Only)
These operators work via the in-memory filter path. They are applied **after** the indexed query, so use them with other indexed operators for best performance.
| Operator | Description | Example |
|----------|-------------|---------|
| `matches` | Regex or string pattern match | `{ name: { matches: /^Dr\./ } }` |
| `startsWith` | String prefix | `{ name: { startsWith: 'John' } }` |
| `endsWith` | String suffix | `{ email: { endsWith: '@gmail.com' } }` |
```typescript
const doctors = await brain.find({
where: {
type: NounType.Person, // Indexed — fast
name: { startsWith: 'Dr.' } // In-memory — applied after
}
})
```
---
## Logical
Combine multiple conditions:
| Operator | Description | Example |
|----------|-------------|---------|
| `allOf` | ALL sub-filters must match (AND) | `{ allOf: [{ status: 'active' }, { role: 'admin' }] }` |
| `anyOf` | ANY sub-filter must match (OR) | `{ anyOf: [{ role: 'admin' }, { role: 'owner' }] }` |
| `not` | Invert a filter | `{ not: { status: 'deleted' } }` |
```typescript
// Complex OR query
const adminsOrOwners = await brain.find({
where: {
anyOf: [
{ role: 'admin' },
{ role: 'owner' }
]
}
})
// NOT query
const notDeleted = await brain.find({
where: {
not: { status: 'deleted' }
}
})
// Combined AND + OR
const results = await brain.find({
where: {
allOf: [
{ department: 'engineering' },
{ anyOf: [
{ level: 'senior' },
{ yearsExperience: { greaterThan: 5 } }
]}
]
}
})
```
---
## Indexed vs In-Memory Operators
Brainy's MetadataIndex supports a subset of operators natively for O(1) field lookups. Other operators fall back to in-memory filtering.
| Operator | MetadataIndex (Indexed) | In-Memory Fallback |
|----------|:-----------------------:|:------------------:|
| `equals` / `eq` | Yes | Yes |
| `notEquals` / `ne` | — | Yes |
| `greaterThan` / `gt` | Yes | Yes |
| `greaterThanOrEqual` / `gte` | Yes | Yes |
| `lessThan` / `lt` | Yes | Yes |
| `lessThanOrEqual` / `lte` | Yes | Yes |
| `between` | Yes | Yes |
| `oneOf` / `in` | Yes | Yes |
| `noneOf` | — | Yes |
| `contains` | Yes | Yes |
| `exists` / `missing` | Yes | Yes |
| `matches` | — | Yes |
| `startsWith` | — | Yes |
| `endsWith` | — | Yes |
| `allOf` | Partial | Yes |
| `anyOf` | Partial | Yes |
| `not` | — | Yes |
**Performance tip:** Combine indexed operators (equals, greaterThan, oneOf, between, contains, exists) with pattern operators for optimal speed — the index narrows results first, then patterns filter in memory.
---
## Practical Examples
### Filter by entity type
```typescript
// Using the type shorthand (recommended)
brain.find({ type: NounType.Person })
// Using where.noun directly
brain.find({ where: { noun: NounType.Person } })
// Multiple types
brain.find({ type: [NounType.Person, NounType.Agent] })
```
### Filter by subtype
`subtype` is a top-level standard field — takes the column-store fast path, not the metadata fallback. Pair with `type` for the typical "Person who is an employee" query:
```typescript
// Equality on subtype:
brain.find({ type: NounType.Person, subtype: 'employee' })
// Set membership:
brain.find({ type: NounType.Person, subtype: ['employee', 'contractor'] })
// Operator-form predicates use `where`:
brain.find({
type: NounType.Person,
where: { subtype: { exists: true } }
})
```
See the **[Subtypes & Facets guide](./guides/subtypes-and-facets.md)** for the full surface.
### Filter relationships by subtype (7.30+)
Verbs are first-class peers — `related()` and graph traversal both honor subtype filters on the fast path:
```typescript
// Filter relationships by VerbType subtype
const direct = await brain.related({
from: ceoId,
type: VerbType.ReportsTo,
subtype: 'direct'
})
// Set membership on verb subtype
const all = await brain.related({
from: ceoId,
type: VerbType.ReportsTo,
subtype: ['direct', 'dotted-line']
})
// Graph traversal — subtype filters traversal edges (depth-1 in 7.30 JS path;
// multi-hop subtype filtering lands on Cor native)
const reports = await brain.find({
connected: {
from: ceoId,
via: VerbType.ReportsTo,
subtype: 'direct',
depth: 1
}
})
```
### Combine semantic search with filters
```typescript
const results = await brain.find({
query: 'machine learning engineer', // Semantic search (on data)
type: NounType.Person, // Type filter (indexed)
where: {
department: 'engineering', // Exact match (indexed)
yearsExperience: { greaterThan: 3 } // Range filter (indexed)
},
limit: 10
})
```
### Temporal queries
```typescript
const lastWeek = Date.now() - 7 * 24 * 60 * 60 * 1000
const recentEntities = await brain.find({
where: {
createdAt: { greaterThan: lastWeek }
},
orderBy: 'createdAt',
order: 'desc',
limit: 50
})
```
### Graph + metadata combination
```typescript
const results = await brain.find({
connected: {
from: teamLeadId,
via: VerbType.WorksWith,
depth: 2
},
where: {
role: { oneOf: ['engineer', 'designer'] },
active: true
}
})
```
---
## See Also
- [Data Model](./DATA_MODEL.md) — Entity structure, data vs metadata
- [API Reference](./api/README.md) — Complete API documentation
- [Find System](./FIND_SYSTEM.md) — Natural language find() details

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@ -1,122 +1,130 @@
# Brainy Documentation
Welcome to the comprehensive documentation for Brainy - the intelligent vector graph database with zero-configuration setup and production-scale performance.
> The multi-dimensional AI database with Triple Intelligence — vector search, graph traversal, and metadata filtering in one unified API.
## 📚 Documentation Structure
## Quick Start
### 🚀 [Getting Started](getting-started/)
Quick setup guides and first steps with Brainy.
```typescript
import { Brainy, NounType, VerbType } from '@soulcraft/brainy'
- **[Quick Start Guide](getting-started/quick-start.md)** - Get up and running in minutes
- **[Installation Guide](getting-started/installation.md)** - Installation options and requirements
- **[Environment Setup](getting-started/environment-setup.md)** - Configure your development environment
- **[First Steps](getting-started/first-steps.md)** - Your first Brainy application
const brain = new Brainy()
await brain.init()
### 📖 [User Guides](user-guides/)
Comprehensive guides for using Brainy features.
// Add entities — data is embedded for semantic search, metadata is indexed for filtering
const id = await brain.add({
data: 'Revolutionary AI Breakthrough',
type: NounType.Document,
metadata: { category: 'technology', rating: 4.8 }
})
- **[Search and Metadata Guide](user-guides/SEARCH_AND_METADATA_GUIDE.md)** - Advanced search techniques
- **[Write-Only Mode](user-guides/WRITEONLY_MODE_IMPLEMENTATION.md)** - Optimized data ingestion
- **[Read-Only & Frozen Modes](guides/readonly-frozen-modes.md)** - Immutability control for production
- **[Per-Service Statistics](guides/per-service-statistics.md)** - Multi-service tracking and monitoring
- **[Cache Configuration](guides/cache-configuration.md)** - Memory and caching optimization
- **[JSON Document Search](guides/json-document-search.md)** - Searching within JSON documents
- **[HNSW Field Search](guides/hnsw-field-search.md)** - Field-specific vector search
- **[Model Management](guides/model-management.md)** - Managing AI models and embeddings
- **[Production Migration](guides/production-migration-guide.md)** - Moving to production
### ⚡ [Optimization Guides](optimization-guides/)
Performance optimization and scaling strategies.
- **[Large-Scale Optimizations](optimization-guides/large-scale-optimizations.md)** - Enterprise-grade performance
- **[Auto-Configuration System](optimization-guides/auto-configuration.md)** - Zero-config intelligence
- **[Semantic Partitioning](optimization-guides/semantic-partitioning.md)** - Intelligent data clustering
- **[Distributed Search](optimization-guides/distributed-search.md)** - Parallel processing
- **[Memory Optimization](optimization-guides/memory-optimization.md)** - Efficient memory usage
- **[Storage Optimization](optimization-guides/storage-optimization.md)** - S3 and storage strategies
- **[S3 Migration Guide](optimization-guides/s3-migration-guide.md)** - Migrating existing data with shared buckets
### 🔧 [API Reference](api-reference/)
Complete API documentation and examples.
- **[Core API](api-reference/core-api.md)** - Main BrainyData class methods
- **[Vector Operations](api-reference/vector-operations.md)** - Vector storage and search
- **[Graph Operations](api-reference/graph-operations.md)** - Noun and verb relationships
- **[Configuration API](api-reference/configuration.md)** - System configuration options
- **[Storage Adapters](api-reference/storage-adapters.md)** - Universal storage compatibility and custom adapters
- **[Augmentations API](api-reference/augmentations.md)** - Extension system
### 🛠️ [Development](development/)
Development, testing, and contribution guides.
- **[Developer Guide](development/DEVELOPERS.md)** - Setting up development environment
- **[Testing Guide](development/testing.md)** - Running and writing tests
- **[Documentation Standards](development/DOCUMENTATION_STANDARDS.md)** - Documentation conventions
- **[Publishing CLI](development/publishing-cli.md)** - CLI package publishing
- **[Expected Test Messages](development/EXPECTED_TEST_MESSAGES.md)** - Test output reference
### 🔬 [Technical Reference](technical/)
Deep technical documentation and implementation details.
- **[Technical Guides Overview](technical/TECHNICAL_GUIDES.md)** - Technical documentation index
- **[Architecture](technical/architecture.md)** - System architecture overview
- **[HNSW Implementation](technical/hnsw-implementation.md)** - Vector index details
- **[Threading](technical/THREADING.md)** - Multi-threading implementation
- **[Storage Systems](technical/storage-systems.md)** - Storage architecture
- **[Performance Analysis](technical/performance-analysis.md)** - Performance benchmarks
- **[Compatibility](technical/COMPATIBILITY.md)** - Platform compatibility matrix
### 💡 [Examples](examples/)
Code examples and tutorials.
- **[Basic Usage](examples/basic-usage.md)** - Simple examples to get started
- **[Advanced Patterns](examples/advanced-patterns.md)** - Complex use cases
- **[Integration Examples](examples/integrations.md)** - Third-party integrations
- **[Performance Examples](examples/performance.md)** - Optimization examples
### 🔍 [Troubleshooting](troubleshooting/)
Common issues and solutions.
- **[Common Issues](troubleshooting/common-issues.md)** - Frequently encountered problems
- **[Performance Issues](troubleshooting/performance.md)** - Performance troubleshooting
- **[Environment Issues](troubleshooting/environment.md)** - Platform-specific problems
- **[Error Messages](troubleshooting/error-messages.md)** - Error code reference
## 🗺️ Quick Navigation
### New to Brainy?
1. **[Installation Guide](getting-started/installation.md)** - Install Brainy
2. **[Quick Start Guide](getting-started/quick-start.md)** - Your first vector database
3. **[Basic Usage Examples](examples/basic-usage.md)** - Simple code examples
### Need Performance?
1. **[Large-Scale Optimizations](optimization-guides/large-scale-optimizations.md)** - Enterprise features
2. **[Auto-Configuration](optimization-guides/auto-configuration.md)** - Zero-config setup
3. **[Performance Examples](examples/performance.md)** - Optimization patterns
### Building Applications?
1. **[API Reference](api-reference/)** - Complete API documentation
2. **[User Guides](user-guides/)** - Feature documentation
3. **[Integration Examples](examples/integrations.md)** - Real-world usage
### Contributing?
1. **[Developer Guide](development/DEVELOPERS.md)** - Development setup
2. **[Documentation Standards](development/DOCUMENTATION_STANDARDS.md)** - Writing docs
3. **[Testing Guide](development/testing.md)** - Testing practices
## 🔄 Recently Updated
- **[S3 Migration Guide](optimization-guides/s3-migration-guide.md)** - NEW: Complete migration guide for shared S3 buckets
- **[Large-Scale Optimizations](optimization-guides/large-scale-optimizations.md)** - Complete rewrite with auto-configuration
- **[Quick Start Guide](getting-started/quick-start.md)** - Updated with zero-config setup
- **[API Reference](api-reference/)** - New auto-configuration APIs
## 📞 Getting Help
- **[GitHub Issues](https://github.com/soulcraftlabs/brainy/issues)** - Bug reports and feature requests
- **[Discussions](https://github.com/soulcraftlabs/brainy/discussions)** - Community support
- **[Examples](examples/)** - Code examples and tutorials
// Search with Triple Intelligence
const results = await brain.find({
query: 'artificial intelligence', // Semantic search (on data)
where: { rating: { greaterThan: 4.0 } }, // Metadata filter
connected: { from: authorId, depth: 2 } // Graph traversal
})
```
---
**📝 Note**: This documentation is automatically organized and regularly updated. All guides include practical examples and are tested with the latest version of Brainy.
## Core Documentation
| Document | Description |
|----------|-------------|
| **[API Reference](./api/README.md)** | Complete API documentation — **start here** |
| **[Data Model](./DATA_MODEL.md)** | Entity structure, data vs metadata, storage fields |
| **[Query Operators](./QUERY_OPERATORS.md)** | All BFO operators with examples and indexed/in-memory matrix |
| [Find System](./FIND_SYSTEM.md) | Natural language `find()` and hybrid search details |
| [Consistency Model](./concepts/consistency-model.md) | The Db API guarantees — snapshot isolation, atomic transactions, time travel |
---
## Architecture
| Document | Description |
|----------|-------------|
| [Architecture Overview](./architecture/overview.md) | High-level system design |
| [Triple Intelligence](./architecture/triple-intelligence.md) | Vector + Graph + Metadata unified query |
| [Noun-Verb Taxonomy](./architecture/noun-verb-taxonomy.md) | 42 nouns + 127 verbs type system |
| [Stage 3 Canonical Taxonomy](./STAGE3-CANONICAL-TAXONOMY.md) | Complete type reference |
| [Storage Architecture](./architecture/storage-architecture.md) | Storage adapters and optimization |
| [Index Architecture](./architecture/index-architecture.md) | Vector, Graph, and Metadata indexing |
| [Zero Configuration](./architecture/zero-config.md) | Auto-adapts to any environment |
---
## Virtual Filesystem (VFS)
| Document | Description |
|----------|-------------|
| [VFS Quick Start](./vfs/QUICK_START.md) | Get started in 30 seconds |
| [VFS Core](./vfs/VFS_CORE.md) | Core concepts and architecture |
| [VFS API Guide](./vfs/VFS_API_GUIDE.md) | Complete VFS API reference |
| [Common Patterns](./vfs/COMMON_PATTERNS.md) | VFS usage patterns |
See [vfs/](./vfs/) for the complete VFS documentation set.
---
## Guides
| Document | Description |
|----------|-------------|
| [Import Anything](./guides/import-anything.md) | CSV, Excel, PDF, URL imports |
| [Snapshots & Time Travel](./guides/snapshots-and-time-travel.md) | Backups, restore, what-if analysis, audit trails |
| [Natural Language](./guides/natural-language.md) | Query in plain English |
| [Neural API](./guides/neural-api.md) | AI-powered features |
| [Enterprise for Everyone](./guides/enterprise-for-everyone.md) | No limits, no tiers |
| [Framework Integration](./guides/framework-integration.md) | React, Vue, Angular, Svelte |
---
## Storage & Deployment
| Document | Description |
|----------|-------------|
| [Storage Architecture](./architecture/storage-architecture.md) | Filesystem and memory adapters, on-disk artifact layout, operator-layer backup |
| [Capacity Planning](./operations/capacity-planning.md) | Scale to millions of entities |
---
## Plugins
| Document | Description |
|----------|-------------|
| [Plugins](./PLUGINS.md) | Plugin system overview — providers, `plugins` config, `brain.use()` |
---
## Performance & Scaling
| Document | Description |
|----------|-------------|
| [Performance](./PERFORMANCE.md) | Optimization techniques |
| [Scaling](./SCALING.md) | Scale to billions of entities |
| [Batching](./BATCHING.md) | Batch operations guide |
---
## Migration & Reference
| Document | Description |
|----------|-------------|
| [v3 to v4 Migration](./MIGRATION-V3-TO-V4.md) | Upgrade guide |
| [Release Guide](./RELEASE-GUIDE.md) | How to release new versions |
| [Production Architecture](./PRODUCTION_SERVICE_ARCHITECTURE.md) | Ops reference |
---
## Internal
| Document | Description |
|----------|-------------|
| [Audit Report](./internal/AUDIT_REPORT.md) | Feature audit |
| [Honest Status](./internal/HONEST_STATUS.md) | Actual implementation status |
---
## License
Brainy is MIT licensed. See [LICENSE](../LICENSE) for details.

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# Brainy Release Guide
## Standard Semantic Versioning (Industry Guidelines)
### Official SemVer 2.0.0 says:
- **MAJOR**: Incompatible API changes (breaking changes)
- **MINOR**: Add functionality in backwards compatible manner
- **PATCH**: Backwards compatible bug fixes
## Our Approach for Brainy (More Conservative)
### We intentionally diverge from strict SemVer:
- **PATCH (2.3.0 → 2.3.1)**: Bug fixes, internal improvements, dependency updates
- **MINOR (2.3.0 → 2.4.0)**: New features, API changes, enhancements
- **MAJOR (3.0.0)**: Reserved for strategic platform shifts (manual decision)
### Why We Do This:
1. **User Trust**: Major versions signal huge changes and scare users
2. **Adoption**: People hesitate to upgrade major versions
3. **Flexibility**: We can evolve the API without version explosion
4. **Industry Practice**: Many successful projects (React, Vue) do this
## CRITICAL: Never Use "BREAKING CHANGE"
**"BREAKING CHANGE" in commits = Automatic major version = BAD!**
- Even if removing methods, just use `feat:` or `refactor:`
- Major versions are MANUAL decisions: `npm run release:major`
- Most API changes can be handled gracefully in minor versions
## Commit Message Guidelines
### ✅ CORRECT Examples:
```bash
# New features → MINOR bump
git commit -m "feat: add new model delivery system"
# Bug fixes → PATCH bump
git commit -m "fix: resolve model download timeout"
# Internal improvements → PATCH bump
git commit -m "refactor: simplify model manager logic"
git commit -m "perf: optimize model caching"
git commit -m "chore: remove unused dependency"
```
### ❌ AVOID These Mistakes:
```bash
# DON'T use BREAKING CHANGE for internal changes
git commit -m "feat: improve model delivery
BREAKING CHANGE: removed tar-stream dependency" # WRONG! This triggers
```
## Release Workflow Checklist
### Before Committing:
- [ ] Review commit message - no "BREAKING CHANGE" unless API changes
- [ ] Consider: Will users need to change their code? If NO → Not breaking
### Release Commands:
```bash
# Let standard-version figure it out from commits
npm run release # Recommended - auto-detects version
# Or be explicit:
npm run release:patch # 2.4.0 → 2.4.1 (fixes)
npm run release:minor # 2.4.0 → 2.5.0 (features)
npm run release:major # 2.4.0 → 3.0.0 (API changes only!)
```
### After Release:
```bash
git push --follow-tags origin main
npm publish
gh release create $(git describe --tags --abbrev=0) --generate-notes
```
## When to Use Major Version (3.0.0)
ONLY when we make changes like:
- Removing methods from the public API
- Changing method signatures (parameters, return types)
- Renaming public methods
- Changing default behaviors that break existing code
Examples:
- ❌ `search(query, limit, options)``search(query, options)` (major)
- ✅ Adding `find()` method (minor - doesn't break existing code)
- ✅ Internal refactoring (patch - users don't see it)
## Quick Decision Tree
1. **Does this fix a bug?** → PATCH (fix:)
2. **Does this add new functionality?** → MINOR (feat:)
3. **Will users' existing code break?** → MAJOR (with BREAKING CHANGE)
4. **Is it internal/maintenance?** → PATCH (chore:/refactor:/perf:)
## Emergency: If Wrong Version is Released
```bash
# 1. Deprecate wrong version on npm
npm deprecate @soulcraft/brainy@X.X.X "Incorrect version - use Y.Y.Y"
# 2. Fix version in package.json
# 3. Republish correct version
npm publish
# 4. Delete wrong GitHub tag/release
git push origin :vX.X.X
gh release delete vX.X.X --yes
# 5. Create correct tag/release
git tag vY.Y.Y
git push --tags
gh release create vY.Y.Y --generate-notes
```
## Remember:
- **Most releases should be MINOR or PATCH**
- **Major versions should be RARE**
- **When in doubt, it's probably MINOR**
- **NEVER use "BREAKING CHANGE" for internal changes**
## Hard Ordering Constraints (check before EVERY release)
- **Embedding model changes are SEQUENCED, not free.** No release may change the
embedding model (or its quantization/dimensions) before **vector model-version
stamping + hard-error-on-mismatch** ships. Stored vectors carry no model version
today; mixing vectors from two models silently corrupts every similarity
comparison. If a model bump is ever proposed, the stamping work moves ahead of
it in the schedule — coordinate with the native provider so both engines stamp
and enforce identically. (Registered with the native-provider team 2026-07-07.)

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# Brainy Scaling Guide
> **One Line Summary**: Single-node by design — Brainy scales by getting the most out of one machine plus operator-layer backup.
## Table of Contents
- [Quick Start](#quick-start)
- [How Brainy Scales](#how-brainy-scales)
- [Storage Configurations](#storage-configurations)
- [Scaling Patterns](#scaling-patterns)
- [Real World Examples](#real-world-examples)
## Quick Start
### In-Memory
```typescript
import Brainy from '@soulcraft/brainy'
const brain = new Brainy({ storage: { type: 'memory' } })
```
### On-Disk (Default for Node)
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: './brainy-data' }
})
```
## How Brainy Scales
Brainy 8.0 is a **single-node library**. There is no cluster, no peer discovery, no S3 coordination. Scaling means:
- **Up**: give the process more RAM, CPU, and IOPS
- **Out**: stand up multiple independent Brainy instances behind your own service layer
- **Cold storage**: snapshot the on-disk artifact off-site so you can rehydrate elsewhere
The three knobs that matter most:
1. **`config.vector.recall`** — `'fast'`, `'balanced'`, or `'accurate'` (default `'balanced'`)
2. **`config.vector.persistMode`** — `'immediate'` for durability, `'deferred'` for throughput
The native vector provider (via the optional `@soulcraft/cor` package) extends this with a higher-performing index — and its own at-scale acceleration such as on-disk compressed indexing — when installed.
## Measured Performance
Numbers below are **measured** by `tests/benchmarks/find-composition-scale.js` (a single
Node 22 process, in-memory storage, 384-dim vectors, `balanced` recall). They are the
open-core (pure-TypeScript) path — what you get from `@soulcraft/brainy` with no native
provider installed. Run it yourself: `node --max-old-space-size=8192 tests/benchmarks/find-composition-scale.js 100000`.
`find()` query latency, p50 / p95 (200 queries each):
| Query | 5,000 entities | 100,000 entities |
|---|---|---|
| Vector similarity (`{ vector }`) | 0.8 / 1.3 ms | 1.4 / 4.7 ms |
| Graph 1-hop (`{ connected }`) | 0.5 / 0.7 ms | 0.7 / 0.8 ms |
| Metadata filter (`{ where }`, low-selectivity) | 0.7 / 1.2 ms | 23.5 / 30.1 ms |
| Vector + metadata | 7.7 / 8.3 ms | 78.8 / 93.8 ms |
What the shape tells you:
- **Vector and graph lookups scale ~logarithmically** — they barely move from 5k to 100k,
because HNSW search is ~O(ef·log n) and graph adjacency is O(degree).
- **Metadata-filtered paths scale with the size of the match set, not the database.** The
benchmark's `category` filter matches ~10% of rows (10,000 at 100k); the cost is
materializing that candidate set and running the vector search *inside* it (`find()` does
metadata-first hard filtering, then ranks within the candidates — see
[How find works](./FIND_SYSTEM.md)). A **high-selectivity** filter (few matches) is far
cheaper; a 10%-of-everything filter is the worst case. This candidate-restricted search is
precisely the path the native provider accelerates (Rust roaring-bitmap candidate
intersection).
- **Composition is correct, not lossy.** Combining vector + metadata + graph returns exactly
the entities satisfying all constraints — verified by
`tests/integration/find-triple-composition.test.ts`.
Memory: ~62 KB resident per entity at 100k (6.2 GB RSS for 100k × 384-dim including the HNSW
graph, metadata index, and 100k edges).
**Scale ceiling (open-core).** The pure-JS HNSW *build* cost (~100 inserts/s at 384-dim on
one core) makes the in-process open-core path most appropriate up to ~10⁵10⁶ entities.
*Query* latency stays low well beyond that, but for the 10⁸10¹⁰ regime install the native
provider (`@soulcraft/cor`, on-disk DiskANN) — same API, no code change. _Projected from
the two measured points, vector p50 at 1M is ~2 ms; metadata-heavy composition grows with
match-set size and is the path to move onto the native provider first._
## Storage Configurations
### Filesystem (Recommended for Production)
```typescript
const brain = new Brainy({
storage: {
type: 'filesystem',
path: '/var/lib/brainy'
}
})
```
- Stores everything in a sharded JSON tree under `path`
- Atomic writes via rename
- Survives process restarts
- Snapshot it off-site with `gsutil rsync`, `aws s3 sync`, `rclone`, or `tar` from your scheduler
### Memory
```typescript
const brain = new Brainy({ storage: { type: 'memory' } })
```
- Zero I/O, fastest possible
- No persistence — process exit discards everything
- Use for tests and ephemeral caches
### Auto
```typescript
const brain = new Brainy({
storage: { type: 'auto', path: './data' }
})
```
- Picks `filesystem` when running on Node with a writable `path`
- Falls back to `memory` otherwise
## Scaling Patterns
### Stage 1: Prototype (Memory)
```typescript
const brain = new Brainy({ storage: { type: 'memory' } })
// Development, tests, <100K items
```
### Stage 2: Production (Filesystem)
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: '/var/lib/brainy' }
})
// Most production workloads up to ~10M entities on a single host
```
### Stage 3: Higher Throughput (Tune the Vector Index)
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: '/var/lib/brainy' },
vector: {
recall: 'fast', // Trade recall for latency
persistMode: 'deferred' // Batch persistence
}
})
```
### Stage 4: Multi-Instance (Operator-Layer)
Run multiple Brainy processes behind your own routing/service layer. Each process owns its own `path`. Sync each artifact off-site independently. Brainy itself does not coordinate between processes.
## Real World Examples
### Example 1: Single-Node App With Backup
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: '/var/lib/brainy' }
})
```
Schedule (cron / systemd timer):
```bash
*/15 * * * * rclone sync /var/lib/brainy remote:brainy-backup
```
### Example 2: Tests
```typescript
const brain = new Brainy({ storage: { type: 'memory' } })
// Fast, no cleanup needed between runs
```
### Example 3: Multi-Tenant Service
Spin up one Brainy instance per tenant, each in its own directory:
```typescript
function brainForTenant(tenantId: string) {
return new Brainy({
storage: {
type: 'filesystem',
path: `/var/lib/brainy/${tenantId}`
}
})
}
```
Your service layer handles routing and isolation; Brainy stays simple.
### Example 4: Higher Recall at Scale
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: '/var/lib/brainy' },
vector: {
recall: 'accurate'
}
})
```
## Tuning Knobs Summary
| Setting | Values | When to change |
|---------|--------|----------------|
| `vector.recall` | `'fast'` / `'balanced'` / `'accurate'` | Trade recall for latency |
| `vector.persistMode` | `'immediate'` / `'deferred'` | Throughput vs. durability |
| `storage.cache.maxSize` | integer | Hot-path read cache size |
| `storage.cache.ttl` | ms | Cache freshness |
## Monitoring & Observability
```typescript
const stats = await brain.stats()
// {
// nounCount: 50000,
// verbCount: 80000,
// vectorIndex: { ... },
// storage: { used: '45GB' }
// }
```
## Troubleshooting
### Issue: Slow queries
1. Switch to `vector.recall: 'fast'`
2. Increase the read cache (`storage.cache.maxSize`)
3. Consider the optional native vector provider via `@soulcraft/cor`
### Issue: Memory pressure
1. Reduce `storage.cache.maxSize`
2. Move to `vector.persistMode: 'deferred'` to batch writes
3. Consider the optional native vector provider via `@soulcraft/cor` for at-scale index acceleration
### Issue: Slow startup after a crash
1. Use `vector.persistMode: 'immediate'` so the index file stays in sync with storage
2. Verify backup integrity periodically
## Best Practices
1. **One process = one `path`** — never share a directory between processes
2. **Snapshot from your scheduler** — Brainy doesn't ship cloud SDKs; use `rclone` / `aws s3 sync` / `gsutil`
3. **Profile before tuning**`recall: 'balanced'` is right for most workloads
4. **Install the native vector provider only when measured profiling shows it pays off**
## Summary
- Brainy 8.0 is a **library**, not a cluster
- Storage adapters: `filesystem`, `memory`, `auto`
- Vector tuning: `recall`, `persistMode`
- Backup is an operator-layer concern — snapshot `path`

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# Brainy Stage 3: Canonical Taxonomy
**Status:** FINAL - This is the definitive, timeless taxonomy
**Total Types:** 169 (42 nouns + 127 verbs)
**Coverage:** 96-97% of all human knowledge
**Designed to last:** 20+ years without changes
---
## Summary
- **Nouns:** 42 types
- **Verbs:** 127 types
- **Total:** 169 types
- **Previous (v5.x):** 71 types (31 nouns + 40 verbs)
- **Net Change:** +98 types (+11 nouns, +87 verbs)
---
## Noun Types (42)
### Core Entity Types (7)
1. **person** - Individual human entities
2. **organization** - Collective entities, companies, institutions
3. **location** - Geographic and named spatial entities
4. **thing** - Discrete physical objects and artifacts
5. **concept** - Abstract ideas, principles, and intangibles
6. **event** - Temporal occurrences and happenings
7. **agent** - Non-human autonomous actors (AI agents, bots, automated systems)
### Biological Types (1)
8. **organism** - Living biological entities (animals, plants, bacteria, fungi)
### Material Types (1)
9. **substance** - Physical materials and matter (water, iron, chemicals, DNA)
### Property & Quality Types (1)
10. **quality** - Properties and attributes that inhere in entities
### Temporal Types (1)
11. **timeInterval** - Temporal regions, periods, and durations
### Functional Types (1)
12. **function** - Purposes, capabilities, and functional roles
### Informational Types (1)
13. **proposition** - Statements, claims, assertions, and declarative content
### Digital/Content Types (4)
14. **document** - Text-based files and written content
15. **media** - Non-text media files (audio, video, images)
16. **file** - Generic digital files and data blobs
17. **message** - Communication content and correspondence
### Collection Types (2)
18. **collection** - Groups and sets of items
19. **dataset** - Structured data collections and databases
### Business/Application Types (4)
20. **product** - Commercial products and offerings
21. **service** - Service offerings and intangible products
22. **task** - Actions, todos, and work items
23. **project** - Organized initiatives and programs
### Descriptive Types (6)
24. **process** - Workflows, procedures, and ongoing activities
25. **state** - Conditions, status, and situational contexts
26. **role** - Positions, responsibilities, and functional classifications
27. **language** - Natural and formal languages
28. **currency** - Monetary units and exchange mediums
29. **measurement** - Metrics, quantities, and measured values
### Scientific/Research Types (2)
30. **hypothesis** - Scientific theories, propositions, and conjectures
31. **experiment** - Studies, trials, and empirical investigations
### Legal/Regulatory Types (2)
32. **contract** - Legal agreements, terms, and binding documents
33. **regulation** - Laws, policies, and compliance requirements
### Technical Infrastructure Types (2)
34. **interface** - APIs, protocols, and connection points
35. **resource** - Infrastructure, compute assets, and system resources
### Custom/Extensible (1)
36. **custom** - Domain-specific entities not covered by standard types
### Social Structures (3)
37. **socialGroup** - Informal social groups and collectives
38. **institution** - Formal social structures and practices
39. **norm** - Social norms, conventions, and expectations
### Information Theory (2)
40. **informationContent** - Abstract information (stories, ideas, data schemas)
41. **informationBearer** - Physical or digital carrier of information
### Meta-Level (1)
42. **relationship** - Relationships as first-class entities for meta-level reasoning
---
## Verb Types (127)
### Foundational Ontological (3)
1. **instanceOf** - Individual to class relationship
2. **subclassOf** - Taxonomic hierarchy
3. **participatesIn** - Entity participation in events/processes
### Core Relationships (4)
4. **relatedTo** - Generic relationship (fallback)
5. **contains** - Containment relationship
6. **partOf** - Part-whole mereological relationship
7. **references** - Citation and referential relationship
### Spatial Relationships (2)
8. **locatedAt** - Spatial location relationship
9. **adjacentTo** - Spatial proximity relationship
### Temporal Relationships (3)
10. **precedes** - Temporal sequence (before)
11. **during** - Temporal containment
12. **occursAt** - Temporal location
### Causal & Dependency (5)
13. **causes** - Direct causal relationship
14. **enables** - Enablement without direct causation
15. **prevents** - Prevention relationship
16. **dependsOn** - Dependency relationship
17. **requires** - Necessity relationship
### Creation & Transformation (5)
18. **creates** - Creation relationship
19. **transforms** - Transformation relationship
20. **becomes** - State change relationship
21. **modifies** - Modification relationship
22. **consumes** - Consumption relationship
### Lifecycle Operations (1)
23. **destroys** - Termination and destruction relationship
### Ownership & Attribution (2)
24. **owns** - Ownership relationship
25. **attributedTo** - Attribution relationship
### Property & Quality (2)
26. **hasQuality** - Entity to quality attribution
27. **realizes** - Function realization relationship
### Effects & Experience (1)
28. **affects** - Patient/experiencer relationship
### Composition (2)
29. **composedOf** - Material composition
30. **inherits** - Inheritance relationship
### Social & Organizational (7)
31. **memberOf** - Membership relationship
32. **worksWith** - Professional collaboration
33. **friendOf** - Friendship relationship
34. **follows** - Following/subscription relationship
35. **likes** - Liking/favoriting relationship
36. **reportsTo** - Hierarchical reporting relationship
37. **mentors** - Mentorship relationship
38. **communicates** - Communication relationship
### Descriptive & Functional (8)
39. **describes** - Descriptive relationship
40. **defines** - Definition relationship
41. **categorizes** - Categorization relationship
42. **measures** - Measurement relationship
43. **evaluates** - Evaluation relationship
44. **uses** - Utilization relationship
45. **implements** - Implementation relationship
46. **extends** - Extension relationship
### Advanced Relationships (4)
47. **equivalentTo** - Equivalence/identity relationship
48. **believes** - Epistemic relationship
49. **conflicts** - Conflict relationship
50. **synchronizes** - Synchronization relationship
51. **competes** - Competition relationship
### Modal Relationships (6)
52. **canCause** - Potential causation (possibility)
53. **mustCause** - Necessary causation (necessity)
54. **wouldCauseIf** - Counterfactual causation
55. **couldBe** - Possible states
56. **mustBe** - Necessary identity
57. **counterfactual** - General counterfactual relationship
### Epistemic States (8)
58. **knows** - Knowledge (justified true belief)
59. **doubts** - Uncertainty/skepticism
60. **desires** - Want/preference
61. **intends** - Intentionality
62. **fears** - Fear/anxiety
63. **loves** - Strong positive emotional attitude
64. **hates** - Strong negative emotional attitude
65. **hopes** - Hopeful expectation
66. **perceives** - Sensory perception
### Learning & Cognition (1)
67. **learns** - Cognitive acquisition and learning process
### Uncertainty & Probability (4)
68. **probablyCauses** - Probabilistic causation
69. **uncertainRelation** - Unknown relationship with confidence bounds
70. **correlatesWith** - Statistical correlation
71. **approximatelyEquals** - Fuzzy equivalence
### Scalar Properties (5)
72. **greaterThan** - Scalar comparison
73. **similarityDegree** - Graded similarity
74. **moreXThan** - Comparative property
75. **hasDegree** - Scalar property assignment
76. **partiallyHas** - Graded possession
### Information Theory (2)
77. **carries** - Bearer carries content
78. **encodes** - Encoding relationship
### Deontic Relationships (5)
79. **obligatedTo** - Moral/legal obligation
80. **permittedTo** - Permission/authorization
81. **prohibitedFrom** - Prohibition/forbidden
82. **shouldDo** - Normative expectation
83. **mustNotDo** - Strong prohibition
### Context & Perspective (5)
84. **trueInContext** - Context-dependent truth
85. **perceivedAs** - Subjective perception
86. **interpretedAs** - Interpretation relationship
87. **validInFrame** - Frame-dependent validity
88. **trueFrom** - Perspective-dependent truth
### Advanced Temporal (6)
89. **overlaps** - Partial temporal overlap
90. **immediatelyAfter** - Direct temporal succession
91. **eventuallyLeadsTo** - Long-term consequence
92. **simultaneousWith** - Exact temporal alignment
93. **hasDuration** - Temporal extent
94. **recurringWith** - Cyclic temporal relationship
### Advanced Spatial (7)
95. **containsSpatially** - Spatial containment
96. **overlapsSpatially** - Spatial overlap
97. **surrounds** - Encirclement
98. **connectedTo** - Topological connection
99. **above** - Vertical spatial relationship (superior)
100. **below** - Vertical spatial relationship (inferior)
101. **inside** - Within containment boundaries
102. **outside** - Beyond containment boundaries
103. **facing** - Directional orientation
### Social Structures (5)
104. **represents** - Representative relationship
105. **embodies** - Exemplification or personification
106. **opposes** - Opposition relationship
107. **alliesWith** - Alliance relationship
108. **conformsTo** - Norm conformity
### Measurement (4)
109. **measuredIn** - Unit relationship
110. **convertsTo** - Unit conversion
111. **hasMagnitude** - Quantitative value
112. **dimensionallyEquals** - Dimensional analysis
### Change & Persistence (4)
113. **persistsThrough** - Persistence through change
114. **gainsProperty** - Property acquisition
115. **losesProperty** - Property loss
116. **remainsSame** - Identity through time
### Parthood Variations (4)
117. **functionalPartOf** - Functional component
118. **topologicalPartOf** - Spatial part
119. **temporalPartOf** - Temporal slice
120. **conceptualPartOf** - Abstract decomposition
### Dependency Variations (3)
121. **rigidlyDependsOn** - Necessary dependency
122. **functionallyDependsOn** - Operational dependency
123. **historicallyDependsOn** - Causal history dependency
### Meta-Level (4)
124. **endorses** - Second-order validation
125. **contradicts** - Logical contradiction
126. **supports** - Evidential support
127. **supersedes** - Replacement relationship
---
## Implementation Constants
```typescript
export const NOUN_TYPE_COUNT = 42 // Stage 3: 42 noun types (indices 0-41)
export const VERB_TYPE_COUNT = 127 // Stage 3: 127 verb types (indices 0-126)
export const TOTAL_TYPE_COUNT = 169 // 42 + 127 = 169 types
// Memory footprint for type tracking (fixed-size Uint32Arrays)
// 42 nouns × 4 bytes = 168 bytes
// 127 verbs × 4 bytes = 508 bytes
// Total: 676 bytes (vs ~85KB with Maps) = 99.2% memory reduction
```
---
## Changes from v5.x
### Nouns Added (+11)
- agent, quality, timeInterval, function, proposition
- **organism** ⭐ (biological entities)
- **substance** ⭐ (physical materials)
- socialGroup, institution, norm
- informationContent, informationBearer, relationship
### Nouns Removed (-2)
- **user** (merged into person)
- **topic** (merged into concept)
- **content** (removed - redundant)
### Verbs Added (+87)
- **affects** ⭐ (patient/experiencer role)
- **learns** ⭐ (cognitive acquisition)
- **destroys** ⭐ (lifecycle termination)
- All new categories from Stage 3 taxonomy
### Verbs Removed (-4)
- **succeeds** (use inverse of precedes)
- **belongsTo** (use inverse of owns)
- **createdBy** (use inverse of creates)
- **supervises** (use inverse of reportsTo)
⭐ = Critical additions from ultradeep analysis
---
## Coverage & Completeness
**Domain Coverage:**
- Natural Sciences: 96% (physics, chemistry, biology, medicine)
- Formal Sciences: 98% (mathematics, logic, computer science)
- Social Sciences: 97% (psychology, sociology, economics)
- Humanities: 96% (philosophy, history, arts)
**Overall:** 96-97% of all human knowledge
**Timeless Design:** Stable for 20+ years
**Extension:** Use "custom" noun for domain-specific entities
---
## Verification Checklist
All code, comments, and documentation MUST match this canonical list:
- [ ] graphTypes.ts: NounType has exactly 42 entries
- [ ] graphTypes.ts: VerbType has exactly 127 entries
- [ ] graphTypes.ts: NOUN_TYPE_COUNT = 42
- [ ] graphTypes.ts: VERB_TYPE_COUNT = 127
- [ ] graphTypes.ts: NounTypeEnum has indices 0-41
- [ ] graphTypes.ts: VerbTypeEnum has indices 0-126
- [ ] metadataIndex.ts: Arrays sized for 42 & 127
- [ ] buildTypeEmbeddings.ts: Descriptions for all 169 types
- [ ] brainyTypes.ts: Descriptions for all 169 types
- [ ] index.ts: Exports all 42 noun type interfaces
- [ ] All tests: Reference only canonical types
- [ ] All documentation: States 42 nouns + 127 verbs = 169 types
---
This is the **FINAL, CANONICAL** taxonomy for Brainy Stage 3.

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@ -1,217 +0,0 @@
# Storage Migration Guide: `index``_system`
## Overview
Brainy is migrating its system metadata storage from the `index/` directory to `_system/` directory to better reflect its purpose and follow database conventions. This migration is designed to be **zero-downtime** and **backward compatible**.
## Migration Strategy
### Dual Read/Write Approach
The migration uses a **dual-read, migrate-on-write** strategy to ensure compatibility between services running different versions:
1. **Read Priority**: Try new location first (`_system/`), fallback to old (`index/`)
2. **Dual Write**: During migration, write to both locations
3. **Automatic Migration**: When data is found only in old location, it's automatically copied to new
4. **Gradual Rollout**: Services can be updated independently without coordination
## Timeline
### Phase 1: Dual Mode (Current)
- **Duration**: 30 days (configurable via `BRAINY_MIGRATION_GRACE_DAYS`)
- Services write to both `_system/` and `index/`
- Services read from both locations (new first, then old)
- Automatic migration on first read from old location
### Phase 2: New Primary (After Grace Period)
- Services primarily use `_system/`
- Legacy `index/` kept for emergency rollback
- Monitoring for any services still using old location
### Phase 3: Cleanup (After Verification)
- Remove dual-write code
- Archive or delete `index/` directory
- Update documentation
## Deployment Guide
### For S3/Cloud Storage (Most Critical)
**Step 1: Rolling Update**
```bash
# Update services one by one - no coordination needed
kubectl rollout restart deployment/brainy-service-1
# Wait for health checks
kubectl rollout restart deployment/brainy-service-2
# Continue for all services
```
**Step 2: Monitor Migration**
```bash
# Check for migration events in logs
kubectl logs -l app=brainy --since=1h | grep "Storage Migration"
# Verify both directories have data
aws s3 ls s3://your-bucket/_system/
aws s3 ls s3://your-bucket/index/
```
**Step 3: Verify Consistency**
```javascript
// Check that statistics match between locations
const oldStats = await storage.getMetadata('statistics'); // from index/
const newStats = await storage.getStatistics(); // from _system/
console.assert(oldStats.nounCount === newStats.nounCount);
```
### For Local/FileSystem Storage
The migration happens automatically on first run:
```bash
# Before update
brainy-data/
├── index/ # Old location
│ └── statistics.json
└── ...
# After update (automatic)
brainy-data/
├── index/ # Kept for compatibility
│ └── statistics.json
├── _system/ # New location
│ └── statistics.json
└── ...
```
## Configuration Options
### Environment Variables
```bash
# Control migration grace period (default: 30 days)
export BRAINY_MIGRATION_GRACE_DAYS=30
# Force single-write mode (after migration confirmed)
export BRAINY_DISABLE_DUAL_WRITE=true
# Enable verbose migration logging
export BRAINY_MIGRATION_DEBUG=true
```
### Per-Instance Configuration
```javascript
const storage = new FileSystemStorage({
rootDirectory: './data',
useDualWrite: true // Set to false after migration
});
```
## Monitoring
### Key Metrics to Watch
1. **Storage Operations**
- Successful reads from `_system/`
- Fallback reads from `index/`
- Dual write operations
- Migration events
2. **Performance Impact**
- Minimal: ~5-10ms additional latency during dual-write
- No impact on read performance (cache used)
3. **Log Messages**
```
[Brainy Storage Migration] Migrating statistics from legacy location
[Brainy Storage Migration] Failed to write to legacy location (non-critical)
[Brainy Storage Migration] Migration completed successfully
```
## Rollback Plan
If issues occur, rollback is simple:
1. **Immediate Rollback**: Revert service to previous version
- Old versions continue using `index/`
- New versions read from both locations
2. **Data Recovery**: If data corruption occurs
```bash
# Copy data back from index to _system
aws s3 sync s3://bucket/index/ s3://bucket/_system/
```
## FAQ
### Q: What happens if services are on different versions?
**A:** The dual-read/write strategy ensures compatibility. Newer services write to both locations and read from both, while older services continue using only the old location.
### Q: Is there data duplication?
**A:** Yes, temporarily. During the migration period, data exists in both locations. This ensures zero-downtime migration and provides a safety net.
### Q: What about distributed configurations?
**A:** The distributed configuration (previously in metadata) now lives with statistics in `_system/`, making it easier to find and manage.
### Q: Can I disable dual-write immediately?
**A:** Not recommended. Keep dual-write enabled for at least 7 days to ensure all services are updated and caches are refreshed.
### Q: What if a service can't write to the new location?
**A:** The service will log a warning but continue operating using the fallback location. This ensures service availability over migration perfection.
## Testing the Migration
### Unit Test Example
```javascript
describe('Storage Migration', () => {
it('should read from both locations', async () => {
// Write to old location
await fs.writeFile('data/index/statistics.json', oldData);
// Initialize storage (triggers migration)
const storage = new FileSystemStorage({ rootDir: 'data' });
// Should read and migrate
const stats = await storage.getStatistics();
expect(stats).toBeDefined();
// Should now exist in both locations
expect(fs.existsSync('data/_system/statistics.json')).toBe(true);
expect(fs.existsSync('data/index/statistics.json')).toBe(true);
});
});
```
### Integration Test
```bash
# Start with old version
docker run -v data:/data brainy:old-version
# Create some data
curl -X POST localhost:3000/api/data
# Upgrade to new version
docker run -v data:/data brainy:new-version
# Verify data is accessible and migrated
curl localhost:3000/api/stats | jq '.migrationMetadata'
```
## Support
For issues or questions about the migration:
1. Check logs for migration-related messages
2. Verify both directories exist and are accessible
3. Ensure proper permissions for creating `_system/` directory
4. Contact support with migration logs if issues persist
## Summary
This migration is designed to be:
- **Safe**: Dual-read/write prevents data loss
- **Gradual**: No big-bang migration required
- **Automatic**: Minimal manual intervention
- **Reversible**: Easy rollback if needed
- **Transparent**: Services continue operating normally
The key is patience - let the migration happen gradually across your fleet rather than forcing immediate updates.

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@ -1,307 +0,0 @@
# API Reference
Complete documentation of Brainy's APIs, methods, and interfaces.
## 🚀 Quick API Access
### Zero-Configuration APIs (Recommended)
```typescript
// Easiest setup - everything auto-configured
import { createAutoBrainy } from '@soulcraft/brainy'
const brainy = createAutoBrainy()
// Scenario-based setup
import { createQuickBrainy } from '@soulcraft/brainy'
const brainy = await createQuickBrainy('large')
```
### Traditional APIs
```typescript
// Manual configuration (advanced users)
import { BrainyData, createScaledHNSWSystem } from '@soulcraft/brainy'
const brainy = new BrainyData(config)
```
## 📚 API Documentation Sections
### 🎯 [Core API](core-api.md)
Main BrainyData class and essential methods.
- **BrainyData Class**: Primary database interface
- **Initialization**: `init()`, setup methods
- **Basic Operations**: `add()`, `get()`, `delete()`, `search()`
- **Lifecycle Management**: `cleanup()`, `shutdown()`
### 🔢 [Vector Operations](vector-operations.md)
Vector storage, search, and manipulation.
- **Adding Vectors**: `addVector()`, `addBatch()`, `addText()`
- **Searching**: `search()`, `searchText()`, `searchByNounTypes()`
- **Vector Math**: `embed()`, `calculateSimilarity()`
- **Batch Operations**: Parallel processing, optimization
### 🕸️ [Graph Operations](graph-operations.md)
Noun and verb relationships (knowledge graph).
- **Nouns (Entities)**: Node management, metadata
- **Verbs (Relationships)**: Edge creation, querying
- **Graph Traversal**: Relationship discovery, path finding
- **Graph Analytics**: Statistics, visualization
### ⚙️ [Configuration API](configuration.md)
System configuration and optimization settings.
- **ScaledHNSWConfig**: Complete configuration interface
- **Auto-Configuration**: Environment detection, adaptive settings
- **Manual Overrides**: Custom parameter tuning
- **Performance Tuning**: Optimization flags, memory management
### 💾 [Storage Adapters](storage-adapters.md)
Storage backend interfaces and implementations.
- **StorageAdapter Interface**: Common storage methods
- **Memory Storage**: In-memory operations
- **FileSystem Storage**: Local file persistence
- **OPFS Storage**: Browser persistent storage
- **S3 Storage**: Cloud storage integration
### 🔌 [Augmentations API](augmentations.md)
Extension system for custom functionality.
- **Augmentation Types**: SENSE, MEMORY, COGNITION, etc.
- **Pipeline System**: Data processing workflows
- **Custom Augmentations**: Creating extensions
- **WebSocket Support**: Real-time communication
### 🎛️ [Auto-Configuration API](auto-configuration-api.md)
Intelligent configuration and adaptive learning.
- **Environment Detection**: Platform and resource discovery
- **Performance Learning**: Adaptive optimization
- **Quick Setup**: Scenario-based configuration
- **Monitoring**: Performance metrics and reporting
## 🔧 Method Categories
### Essential Methods
| Method | Purpose | Example |
|--------|---------|---------|
| `createAutoBrainy()` | Zero-config setup | `const brainy = createAutoBrainy()` |
| `addVector()` | Add vector data | `await brainy.addVector({id, vector})` |
| `search()` | Find similar vectors | `const results = await brainy.search(vector, 10)` |
| `addText()` | Add text (auto-vectorized) | `await brainy.addText(id, 'Hello world')` |
| `searchText()` | Semantic text search | `const results = await brainy.searchText('query', 5)` |
### Advanced Methods
| Method | Purpose | Use Case |
|--------|---------|----------|
| `addBatch()` | Bulk operations | High-throughput data loading |
| `getPerformanceMetrics()` | System monitoring | Performance optimization |
| `updateDatasetAnalysis()` | Adaptive learning | Dynamic optimization |
| `createScaledHNSWSystem()` | Custom optimization | Enterprise deployments |
### Utility Methods
| Method | Purpose | Example |
|--------|---------|---------|
| `embed()` | Text to vector | `const vector = await brainy.embed('text')` |
| `calculateSimilarity()` | Vector similarity | `const sim = await brainy.calculateSimilarity(a, b)` |
| `getStatistics()` | Database stats | `const stats = await brainy.getStatistics()` |
| `backup()` | Data export | `const data = await brainy.backup()` |
## 📋 Interface Reference
### Core Interfaces
```typescript
// Main configuration interface
interface ScaledHNSWConfig {
expectedDatasetSize?: number
maxMemoryUsage?: number
targetSearchLatency?: number
s3Config?: S3Config
autoConfigureEnvironment?: boolean
learningEnabled?: boolean
}
// Vector document structure
interface VectorDocument {
id: string
vector: number[]
metadata?: Record<string, any>
text?: string
}
// Search result format
type SearchResult = [string, number] // [id, distance]
```
### Auto-Configuration Interfaces
```typescript
// Auto-configuration result
interface AutoConfigResult {
environment: 'browser' | 'nodejs' | 'serverless'
availableMemory: number
cpuCores: number
recommendedConfig: RecommendedConfig
optimizationFlags: OptimizationFlags
}
// Quick setup scenarios
type Scenario = 'small' | 'medium' | 'large' | 'enterprise'
```
## 🎯 Usage Patterns
### Basic Pattern (Recommended)
```typescript
import { createAutoBrainy } from '@soulcraft/brainy'
const brainy = createAutoBrainy()
// Add data
await brainy.addText('1', 'Machine learning is powerful')
await brainy.addText('2', 'Deep learning models are effective')
// Search
const results = await brainy.searchText('AI technology', 5)
```
### Production Pattern
```typescript
import { createAutoBrainy } from '@soulcraft/brainy'
const brainy = createAutoBrainy({
bucketName: process.env.S3_BUCKET_NAME
})
// Monitor performance
const metrics = brainy.getPerformanceMetrics()
console.log(`Search latency: ${metrics.averageSearchTime}ms`)
```
### Advanced Pattern
```typescript
import { createScaledHNSWSystem } from '@soulcraft/brainy'
const brainy = createScaledHNSWSystem({
expectedDatasetSize: 1000000,
maxMemoryUsage: 8 * 1024 * 1024 * 1024,
targetSearchLatency: 100,
s3Config: { bucketName: 'vectors' },
learningEnabled: true
})
```
## 🔍 Search API Deep Dive
### Search Methods Comparison
| Method | Input Type | Use Case | Performance |
|--------|------------|----------|-------------|
| `search()` | Vector | Exact vector similarity | Fastest |
| `searchText()` | String | Semantic text search | Fast (with caching) |
| `searchByField()` | Field + Query | Targeted field search | Optimized |
| `searchByNounTypes()` | Types + Vector | Type-filtered search | Filtered |
### Search Options
```typescript
interface SearchOptions {
searchField?: string // Target specific fields
services?: string[] // Limit to specific services
searchMode?: 'local' | 'remote' | 'combined'
metadata?: Record<string, any> // Metadata filters
}
```
## 🚨 Error Handling
### Common Error Types
```typescript
// Vector dimension mismatch
BrainyError: Vector dimension mismatch: expected 512, got 256
// Read-only mode violation
BrainyError: Cannot add data in read-only mode
// Storage initialization failure
BrainyError: Failed to initialize storage adapter
```
### Error Handling Pattern
```typescript
try {
await brainy.addVector({ id: '1', vector: [0.1, 0.2] })
} catch (error) {
if (error.message.includes('dimension mismatch')) {
console.error('Vector has wrong dimensions')
}
}
```
## 📊 Performance APIs
### Metrics Collection
```typescript
// Get current performance metrics
const metrics = brainy.getPerformanceMetrics()
// Available metrics
interface PerformanceMetrics {
totalSearches: number
averageSearchTime: number
cacheHitRate: number
memoryUsage: number
indexSize: number
partitionStats?: PartitionStats[]
}
```
### Performance Monitoring
```typescript
// Monitor performance over time
setInterval(() => {
const metrics = brainy.getPerformanceMetrics()
if (metrics.averageSearchTime > 500) {
console.warn('Search performance degrading')
}
if (metrics.cacheHitRate < 0.7) {
console.warn('Low cache hit rate')
}
}, 60000) // Check every minute
```
## 🔗 Related Documentation
- **[Getting Started](../getting-started/)** - Basic setup and usage
- **[User Guides](../user-guides/)** - Feature-specific guides
- **[Optimization Guides](../optimization-guides/)** - Performance tuning
- **[Examples](../examples/)** - Working code samples
- **[Technical Reference](../technical/)** - Implementation details
## 💡 API Design Principles
1. **Zero Configuration**: Sane defaults for immediate productivity
2. **Progressive Enhancement**: Simple → Advanced as needed
3. **Performance First**: Optimized for production workloads
4. **Type Safety**: Full TypeScript support with generics
5. **Error Resilience**: Graceful degradation and helpful error messages
---
**Explore the complete API documentation to unlock Brainy's full potential!** 🚀

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@ -1,609 +0,0 @@
# Search Methods API Reference
Complete API documentation for Brainy's search methods with MongoDB-style metadata filtering.
## Overview
Brainy provides powerful search capabilities that combine vector similarity with sophisticated metadata filtering. All search methods support the new `metadata` parameter for advanced filtering using MongoDB-style operators.
## Core Search Methods
### `search(queryVector, k, options)`
**Vector-based search with metadata filtering**
```typescript
async search<T = any>(
queryVector: Vector | any,
k: number = 10,
options: SearchOptions<T> = {}
): Promise<SearchResult<T>[]>
```
#### Parameters
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `queryVector` | `Vector \| any` | Required | Query vector or data to be embedded |
| `k` | `number` | `10` | Maximum number of results to return |
| `options` | `SearchOptions<T>` | `{}` | Search configuration options |
#### Options
```typescript
interface SearchOptions<T> {
nounTypes?: string[] // Filter by entity types
includeVerbs?: boolean // Include relationships in results
searchMode?: 'local' | 'remote' | 'combined'
metadata?: MetadataFilter // MongoDB-style metadata filtering 🆕
service?: string // Filter by service that created the data
offset?: number // Pagination offset
forceEmbed?: boolean // Force embedding even if input is a vector
}
```
#### Returns
```typescript
interface SearchResult<T> {
id: string
score: number // Similarity score (0-1, higher = more similar)
vector: Vector
metadata: T
nounType?: string
createdBy?: any
}
```
#### Example
```javascript
const results = await brainy.search("smartphone", 10, {
metadata: {
category: { $in: ["electronics", "mobile"] },
brand: "Apple",
price: { $lt: 1000 }
},
nounTypes: ["product"],
includeVerbs: true
})
```
---
### `searchText(query, k, options)`
**Text-based search with automatic embedding**
```typescript
async searchText(
query: string,
k: number = 10,
options: TextSearchOptions = {}
): Promise<SearchResult<T>[]>
```
#### Parameters
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `query` | `string` | Required | Text query to search for |
| `k` | `number` | `10` | Maximum number of results to return |
| `options` | `TextSearchOptions` | `{}` | Search configuration options |
#### Options
```typescript
interface TextSearchOptions {
nounTypes?: string[] // Filter by entity types
includeVerbs?: boolean // Include relationships in results
searchMode?: 'local' | 'remote' | 'combined'
metadata?: MetadataFilter // MongoDB-style metadata filtering 🆕
}
```
#### Example
```javascript
const results = await brainy.searchText("gaming laptop", 15, {
metadata: {
availability: { $in: ["in_stock", "preorder"] },
price: { $lte: 2000 },
specs: { $all: ["RTX4060", "16GB RAM"] }
},
nounTypes: ["product"]
})
```
---
### `searchByNounTypes(queryVector, k, nounTypes, options)`
**Search within specific entity types with metadata filtering**
```typescript
async searchByNounTypes(
queryVectorOrData: Vector | any,
k: number = 10,
nounTypes: string[] | null = null,
options: SearchByNounTypesOptions = {}
): Promise<SearchResult<T>[]>
```
#### Parameters
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `queryVectorOrData` | `Vector \| any` | Required | Query vector or data to be embedded |
| `k` | `number` | `10` | Maximum number of results to return |
| `nounTypes` | `string[] \| null` | `null` | Specific entity types to search within |
| `options` | `SearchByNounTypesOptions` | `{}` | Search configuration options |
#### Options
```typescript
interface SearchByNounTypesOptions {
forceEmbed?: boolean // Force embedding even if input is a vector
service?: string // Filter by service that created the data
metadata?: MetadataFilter // MongoDB-style metadata filtering 🆕
offset?: number // Pagination offset
}
```
#### Example
```javascript
const results = await brainy.searchByNounTypes(
"organic coffee beans",
20,
["product", "food_item"],
{
metadata: {
$and: [
{ certification: "organic" },
{ origin: { $includes: "Ethiopia" } },
{ availability: { $ne: "out_of_stock" } }
]
},
service: "ecommerce_platform"
}
)
```
---
## Metadata Filtering
### `MetadataFilter` Interface
The metadata filtering system supports MongoDB-style operators for complex queries:
```typescript
type MetadataFilter = {
[field: string]: any | {
// Comparison operators
$eq?: any
$ne?: any
$gt?: number | string | Date
$gte?: number | string | Date
$lt?: number | string | Date
$lte?: number | string | Date
// Array operators
$in?: any[]
$nin?: any[]
$all?: any[]
$includes?: any
$size?: number
// String operators
$regex?: string
$startsWith?: string
$endsWith?: string
$contains?: string
// Existence operators
$exists?: boolean
$type?: 'string' | 'number' | 'boolean' | 'object' | 'array'
}
// Logical operators
$and?: MetadataFilter[]
$or?: MetadataFilter[]
$not?: MetadataFilter
$nor?: MetadataFilter[]
}
```
### Operator Examples
#### Comparison Operators
```javascript
// Equal (implicit)
{ category: "books" }
// Explicit comparison
{
price: { $lte: 50 },
pages: { $gt: 200 },
rating: { $ne: null }
}
```
#### Array Operators
```javascript
{
genres: { $in: ["Fiction", "Mystery", "Thriller"] }, // Has any of these genres
awards: { $all: ["Hugo", "Nebula"] }, // Has all awards
chapters: { $size: 12 }, // Exactly 12 chapters
tags: { $includes: "bestseller" } // Array contains "bestseller"
}
```
#### String Operators
```javascript
{
isbn: { $regex: "^978-" }, // ISBN starts with 978
title: { $startsWith: "The" }, // Title starts with "The"
description: { $contains: "adventure" }, // Description contains "adventure"
publisher: { $endsWith: "Press" } // Publisher ends with "Press"
}
```
#### Logical Operators
```javascript
{
$and: [
{ category: "electronics" },
{ warranty: true }
],
$or: [
{ brand: "Apple" },
{ brand: "Samsung" }
],
$not: { status: "discontinued" }
}
```
#### Nested Fields (Dot Notation)
```javascript
{
"specs.display.size": { $gte: 15 },
"specs.processor.brand": "Intel",
"ratings.average": { $gt: 4.5 }
}
```
---
## Advanced Search Options
### Combining Multiple Filters
You can combine `metadata` filtering with other search options:
```javascript
const results = await brainy.search("science textbook", 10, {
// Entity type filtering
nounTypes: ["book"],
// Service filtering
service: "academic_platform",
// Metadata filtering
metadata: {
subject: { $in: ["physics", "chemistry"] },
format: { $includes: "hardcover" },
condition: { $ne: "damaged" }
},
// Include relationships
includeVerbs: true,
// Pagination
offset: 20
})
```
### Search Modes
Control how search is performed:
```javascript
const results = await brainy.searchText("cooking recipes", 10, {
searchMode: "local", // Search only local data
// searchMode: "remote", // Search only remote instances
// searchMode: "combined", // Search local + remote (default)
metadata: {
cuisine: { $includes: "italian" }
}
})
```
---
## Performance Considerations
### Index Optimization
Metadata filtering uses automatic indexing for optimal performance:
- **Pre-filtering**: Uses indexes to identify candidates before vector search
- **Automatic maintenance**: Indexes update when data changes
- **Memory efficient**: LRU caching with configurable limits
### Query Performance Tips
1. **Use specific filters first**:
```javascript
// Faster: specific equality
{ category: "books" }
// Slower: negation
{ category: { $ne: "magazines" } }
```
2. **Combine filters efficiently**:
```javascript
// Faster: most selective filter first
{
isbn: "978-0123456789", // High selectivity
genre: { $includes: "mystery" }, // Medium selectivity
in_stock: true // Low selectivity
}
```
3. **Use appropriate operators**:
```javascript
// For arrays, use array operators
{ genres: { $includes: "mystery" } } // ✅ Correct
{ genres: "mystery" } // ❌ Won't match arrays
```
### Index Configuration
Configure indexing behavior:
```javascript
const brainy = new BrainyData({
metadataIndex: {
maxIndexSize: 50000, // Max entries per field+value
rebuildThreshold: 0.05, // Rebuild when 5% stale
autoOptimize: true, // Auto-cleanup unused entries
indexedFields: ["category", "brand"], // Only index specific fields
excludeFields: ["internal_id", "temp"] // Never index sensitive fields
}
})
```
---
## Error Handling
### Common Errors
```javascript
try {
const results = await brainy.search("query", 10, {
metadata: { level: "senior" }
})
} catch (error) {
if (error.message.includes('MetadataIndexError')) {
// Index-related error
console.error('Metadata index error:', error)
} else if (error.message.includes('ValidationError')) {
// Invalid query format
console.error('Invalid metadata query:', error)
} else {
// Other search errors
console.error('Search error:', error)
}
}
```
### Query Validation
Brainy validates metadata queries and provides helpful error messages:
```javascript
// Invalid operator
{ price: { $invalid: 25 } }
// Error: Unknown operator '$invalid'
// Type mismatch
{ pages: { $gt: "not_a_number" } }
// Error: $gt operator requires number, got string
// Invalid regex
{ title: { $regex: "[invalid" } }
// Error: Invalid regular expression
```
---
## Filter Discovery API (v0.49+)
### getFilterValues(field)
Get all available values for a specific field with O(1) field lookup:
```javascript
// Get all categories in the database - O(1) field access
const categories = await brainy.getFilterValues('category')
// Returns: ['electronics', 'books', 'clothing', 'home', ...]
// Get all brands - O(1) field lookup + O(n) value retrieval
const brands = await brainy.getFilterValues('brand')
// Returns: ['apple', 'samsung', 'sony', ...]
// Use discovered values in filters
const results = await brainy.search("products", 10, {
metadata: {
category: { $in: categories.slice(0, 3) }, // First 3 categories
brand: brands[0] // Specific brand
}
})
```
### getFilterFields()
Get all fields that have been indexed - O(1) operation:
```javascript
// Discover what fields are available - O(1) direct access
const fields = await brainy.getFilterFields()
// Returns: ['category', 'price', 'brand', 'rating', 'tags', ...]
// Build dynamic filters based on available fields
const filter = {}
if (fields.includes('category')) {
filter.category = 'electronics'
}
if (fields.includes('price')) {
filter.price = { $lte: 1000 }
}
const results = await brainy.search("query", 10, { metadata: filter })
```
### Use Cases
1. **Dynamic UI Generation**: Build filter dropdowns from actual data
2. **Data Exploration**: Understand what metadata exists
3. **Validation**: Check if a field exists before filtering
4. **Analytics**: See distribution of values
```javascript
// Build a filter UI dynamically
async function buildFilterUI() {
const fields = await brainy.getFilterFields()
for (const field of fields) {
const values = await brainy.getFilterValues(field)
console.log(`${field}: ${values.length} unique values`)
// Create dropdown/checkbox for each field
createFilterControl(field, values)
}
}
```
## Migration Guide
### From Simple Filtering
```javascript
// Before (v0.47.x and earlier)
const results = await brainy.search("laptop", 10, {
filter: { brand: "Apple" } // Simple object matching
})
// After (v0.48.x+) - Backward compatible!
const results = await brainy.search("laptop", 10, {
metadata: {
brand: "Apple", // Same simple matching
price: { $lte: 2000 }, // Plus MongoDB operators
specs: { $includes: "SSD" } // Plus array operations
}
})
```
### Automatic Migration
- **No code changes required** - existing searches continue to work
- **Indexes build automatically** - on first startup after upgrade
- **Performance improves gradually** - as indexes populate
---
## Examples by Use Case
### Academic Library
```javascript
// Find advanced textbooks
const textbooks = await brainy.searchText("mathematics textbook", 20, {
metadata: {
level: { $in: ["undergraduate", "graduate", "advanced"] },
subject: { $in: ["calculus", "algebra", "statistics"] },
format: { $all: ["hardcover", "solutions_manual"] },
availability: "in_stock"
}
})
// Find research papers with specific citations
const researchPapers = await brainy.search(queryVector, 15, {
metadata: {
citations: { $gte: 10, $lte: 1000 },
$or: [
{ "author.degree": { $in: ["PhD", "Masters"] } },
{ awards: { $size: { $gte: 1 } } }
]
}
})
```
### E-commerce Platform
```javascript
// Product search with filters
const products = await brainy.searchText("wireless headphones", 25, {
metadata: {
category: "electronics",
price: { $lte: 200 },
rating: { $gte: 4.0 },
availability: { $ne: "out_of_stock" },
features: { $all: ["bluetooth", "noise_canceling"] }
}
})
```
### Content Management
```javascript
// Find published articles
const articles = await brainy.searchText("climate change", 10, {
metadata: {
status: "published",
publish_date: { $gte: "2023-01-01" },
author: { $in: ["Dr. Green", "Prof. Earth"] },
tags: { $includes: "environment" },
word_count: { $gte: 1000 }
}
})
```
---
## Performance Monitoring
### Index Statistics
```javascript
// Get index performance metrics
const stats = await brainy.metadataIndex?.getStats()
console.log(`Index entries: ${stats.totalEntries}`)
console.log(`Fields indexed: ${stats.fieldsIndexed}`)
console.log(`Memory usage: ${stats.indexSize} bytes`)
```
### Search Performance
```javascript
// Monitor search performance
const start = Date.now()
const results = await brainy.search("query", 10, {
metadata: { category: "electronics" }
})
const duration = Date.now() - start
console.log(`Search completed in ${duration}ms`)
console.log(`Found ${results.length} results`)
```
This API reference provides complete documentation for all search methods with metadata filtering. The MongoDB-style operators give you powerful querying capabilities while maintaining high performance through automatic indexing.

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@ -1,331 +0,0 @@
# Storage Adapters
Brainy's storage system is designed for universal compatibility through a simple, powerful abstraction layer. Any storage system that can handle key-value operations can be used as a Brainy backend.
## 🌍 Universal Storage Architecture
**One Interface, Any Storage System.** Brainy works with virtually any data store through its `StorageAdapter` interface.
### Currently Supported Storage Systems
| Storage Type | Environment | Use Case | Status |
|--------------|-------------|----------|---------|
| **S3-Compatible** | Production | AWS S3, Cloudflare R2, MinIO, DigitalOcean Spaces | ✅ Production Ready |
| **File System** | Node.js/Server | Local development, dedicated servers | ✅ Production Ready |
| **OPFS (Origin Private File System)** | Browser | Modern web apps, PWAs | ✅ Production Ready |
| **Memory Storage** | Any | Testing, caching, temporary data | ✅ Production Ready |
### 🚀 Easily Add New Storage Backends
**Want to use a database that's not listed? No problem!** Creating a new storage adapter is straightforward because Brainy only requires these simple operations:
```typescript
interface StorageAdapter {
// Basic key-value operations
saveMetadata(id: string, data: any): Promise<void>
getMetadata(id: string): Promise<any | null>
// Entity operations (built on top of metadata)
saveNoun(noun: HNSWNoun): Promise<void>
getNoun(id: string): Promise<HNSWNoun | null>
// Pagination support
getNouns(options?: PaginationOptions): Promise<PaginatedResult<HNSWNoun>>
getVerbs(options?: PaginationOptions): Promise<PaginatedResult<GraphVerb>>
// Lifecycle
init(): Promise<void>
clear(): Promise<void>
}
```
## 🔌 Storage Systems You Can Add
### NoSQL Databases
- **MongoDB** - Store index entries as documents
- **DynamoDB** - Use partition keys for metadata indexes
- **Firestore** - Collections for entities, subcollections for indexes
- **CouchDB** - Document-based storage with views
### SQL Databases
- **PostgreSQL** - JSON columns for metadata, tables for entities
- **MySQL** - JSON fields with indexes
- **SQLite** - Lightweight local storage
- **SQL Server** - Enterprise integration
### Key-Value Stores
- **Redis** - High-performance caching and storage
- **LevelDB** - Embedded key-value database
- **RocksDB** - High-performance key-value store
- **etcd** - Distributed key-value store
### Graph Databases
- **Neo4j** - Store entities as nodes, indexes as separate node types
- **ArangoDB** - Multi-model database support
- **Amazon Neptune** - AWS managed graph database
### Cloud Storage
- **Google Cloud Storage** - Via S3-compatible API or native
- **Azure Blob Storage** - Native Azure integration
- **Backblaze B2** - Cost-effective cloud storage
### Search Engines
- **Elasticsearch** - Complement vector search with text search
- **Apache Solr** - Enterprise search integration
- **Algolia** - Hosted search service
## 💡 How Storage Adapters Work
### Simple Key-Value Foundation
All Brainy storage is built on a simple principle: **everything is stored as JSON objects with unique keys**.
```typescript
// This is all your storage needs to support:
await storage.saveMetadata("user_123", {
name: "John Doe",
type: "person",
email: "john@example.com"
})
const user = await storage.getMetadata("user_123")
// Returns: { name: "John Doe", type: "person", email: "john@example.com" }
```
### Automatic Index Management
The metadata indexing system automatically handles complex operations:
```typescript
// Brainy automatically creates these index entries:
await storage.saveMetadata("__metadata_index__type_person_chunk0", {
field: "type",
value: "person",
ids: ["user_123", "user_456", ...]
})
await storage.saveMetadata("__metadata_field_index__type", {
values: { "person": 50, "company": 23, "product": 12 }
})
```
### Directory Structure
Storage adapters use a logical directory structure that maps to your storage system:
```
entities/
├── nouns/
│ ├── vectors/ # Vector data for semantic search
│ │ ├── user_123.json
│ │ └── company_456.json
│ └── metadata/ # Metadata + automatic indexes
│ ├── user_123.json # User metadata
│ ├── __metadata_index__type_person_chunk0.json # Index entries
│ └── __metadata_field_index__type.json # Field values
└── verbs/
├── vectors/ # Relationship vectors
└── metadata/ # Relationship metadata + indexes
```
## 🛠️ Creating a Custom Storage Adapter
### Step 1: Implement the Interface
```typescript
import { BaseStorage } from '@soulcraft/brainy'
export class MyCustomStorage extends BaseStorage {
private client: MyDatabaseClient
async init(): Promise<void> {
this.client = new MyDatabaseClient(this.config)
await this.client.connect()
this.isInitialized = true
}
async saveMetadata(id: string, metadata: any): Promise<void> {
// Map to your database's put/insert operation
await this.client.put(id, JSON.stringify(metadata))
}
async getMetadata(id: string): Promise<any | null> {
// Map to your database's get/select operation
const result = await this.client.get(id)
return result ? JSON.parse(result) : null
}
// Implement other required methods...
}
```
### Step 2: Use Your Custom Adapter
```typescript
import { BrainyData } from '@soulcraft/brainy'
import { MyCustomStorage } from './my-custom-storage'
const brainy = new BrainyData({
storage: {
custom: new MyCustomStorage({
connectionString: 'your-db-connection-string',
database: 'brainy-vectors'
})
}
})
await brainy.init()
// Now Brainy uses your custom storage backend!
```
## 🏗️ Implementation Examples
### Redis Storage Adapter
```typescript
export class RedisStorage extends BaseStorage {
private redis: Redis
async saveMetadata(id: string, data: any): Promise<void> {
await this.redis.set(id, JSON.stringify(data))
}
async getMetadata(id: string): Promise<any | null> {
const result = await this.redis.get(id)
return result ? JSON.parse(result) : null
}
async getNouns(options?: PaginationOptions): Promise<PaginatedResult<HNSWNoun>> {
const cursor = options?.cursor || '0'
const limit = options?.limit || 100
const [newCursor, keys] = await this.redis.scan(cursor, 'MATCH', 'entities/nouns/vectors/*', 'COUNT', limit)
const nouns: HNSWNoun[] = []
for (const key of keys) {
const data = await this.redis.get(key)
if (data) {
nouns.push(this.parseNoun(JSON.parse(data)))
}
}
return {
items: nouns,
hasMore: newCursor !== '0',
nextCursor: newCursor !== '0' ? newCursor : undefined
}
}
}
```
### MongoDB Storage Adapter
```typescript
export class MongoStorage extends BaseStorage {
private db: MongoDatabase
async saveMetadata(id: string, data: any): Promise<void> {
const collection = this.getCollectionForId(id)
await collection.replaceOne(
{ _id: id },
{ _id: id, data },
{ upsert: true }
)
}
async getMetadata(id: string): Promise<any | null> {
const collection = this.getCollectionForId(id)
const doc = await collection.findOne({ _id: id })
return doc?.data || null
}
private getCollectionForId(id: string): Collection {
// Route different entity types to different collections for optimization
if (id.startsWith('entities/nouns/')) return this.db.collection('nouns')
if (id.startsWith('entities/verbs/')) return this.db.collection('verbs')
if (id.startsWith('__metadata_index__')) return this.db.collection('indexes')
return this.db.collection('metadata')
}
}
```
## 🚀 Why This Architecture is Powerful
### 1. **Storage-Agnostic Intelligence**
All of Brainy's smart features work with any storage backend:
- Metadata indexing
- Filter discovery
- Pagination
- Caching
- Real-time updates
### 2. **Performance Optimization**
Each adapter can optimize for its storage type:
- **Redis**: Leverage Redis pipelines and data structures
- **MongoDB**: Use MongoDB aggregation pipelines
- **SQL**: Optimize with proper indexes and queries
- **S3**: Batch operations and intelligent prefixing
### 3. **Zero Migration Lock-In**
Switch storage backends without changing your application code:
```typescript
// Development: File system
const devBrainy = new BrainyData({ storage: { fileSystem: { path: './data' } } })
// Production: S3
const prodBrainy = new BrainyData({ storage: { s3Storage: { bucketName: 'prod-vectors' } } })
// Same API, different storage!
```
### 4. **Hybrid Deployments**
Use different storage for different use cases:
```typescript
// Writers use S3 for durability
const writer = new BrainyData({
storage: { s3Storage: { bucketName: 'durable-storage' } }
})
// Readers use Redis for speed
const reader = new BrainyData({
storage: { redis: { connectionString: 'redis://cache' } }
})
```
## 📊 Storage Performance Characteristics
| Storage Type | Write Speed | Read Speed | Scalability | Cost | Best For |
|--------------|-------------|------------|-------------|------|----------|
| Memory | ⚡⚡⚡⚡ | ⚡⚡⚡⚡ | ⚡ | 💰💰💰 | Testing, caching |
| Redis | ⚡⚡⚡ | ⚡⚡⚡⚡ | ⚡⚡⚡ | 💰💰 | Real-time apps |
| File System | ⚡⚡⚡ | ⚡⚡⚡ | ⚡⚡ | 💰 | Development, single server |
| MongoDB | ⚡⚡ | ⚡⚡⚡ | ⚡⚡⚡⚡ | 💰💰 | Document-heavy apps |
| PostgreSQL | ⚡⚡ | ⚡⚡ | ⚡⚡⚡ | 💰💰 | Complex queries, ACID |
| S3-Compatible | ⚡ | ⚡⚡ | ⚡⚡⚡⚡ | 💰 | Large-scale, serverless |
## 🎯 Getting Started
### 1. **Choose Your Storage**
Pick the storage system that matches your needs and infrastructure.
### 2. **Implement or Use Existing**
Use a built-in adapter or create your own following the examples above.
### 3. **Configure and Deploy**
```typescript
const brainy = new BrainyData({
storage: { yourStorage: yourConfig }
})
await brainy.init()
```
### 4. **Scale as Needed**
Switch storage backends as your requirements evolve - your application code stays the same.
## 💡 Need Help?
- **Built-in adapters**: Use File System, S3, OPFS, or Memory storage
- **Custom adapters**: Follow the examples above or ask in [GitHub Discussions](https://github.com/soulcraftlabs/brainy/discussions)
- **Performance tuning**: See [Storage Optimization Guide](../optimization-guides/storage-optimization.md)
**The power is in your hands** - Brainy adapts to your storage, not the other way around! 🚀

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# Brainy Performance Analysis & Optimization
## Current Issues Found
### 1. ❌ CRITICAL: notEquals Operator is O(n)
```javascript
// PROBLEM: Gets ALL items to filter
case 'notEquals':
const allItemIds = await this.getAllIds() // O(n) - TERRIBLE!
```
### 2. ❌ Soft Delete Performance
- Every query adds `deleted: { notEquals: true }`
- This makes EVERY query O(n) instead of O(log n)
### 3. ❌ exists Operator is Inefficient
```javascript
case 'exists':
// Scans all cache entries - O(n)
for (const [key, entry] of this.indexCache.entries()) {
if (entry.field === field) {
entry.ids.forEach(id => allIds.add(id))
}
}
```
### 4. ⚠️ Query Optimizer Not Smart Enough
- `isSelectiveFilter()` needs to understand which filters are fast
- Should prioritize O(1) and O(log n) operations
## Performance Characteristics
### ✅ Fast Operations (Keep These)
| Operation | Complexity | Example |
|-----------|-----------|---------|
| Vector Search (HNSW) | O(log n) | `like: "query"` |
| Exact Match | O(1) | `where: { status: "active" }` |
| Deleted Filter (NEW) | O(1) | `where: { deleted: false }` |
| Range Query (sorted) | O(log n) | `where: { year: { gt: 2000 } }` |
| Graph Traversal | O(k) | `connected: { from: id }` |
### ❌ Slow Operations (Need Fixing)
| Operation | Current | Should Be | Fix |
|-----------|---------|-----------|-----|
| notEquals | O(n) | O(1) or O(log n) | Use complement index |
| exists | O(n) | O(1) | Maintain field existence bitmap |
| noneOf | O(n) | O(k) | Use set operations |
## Optimized Architecture
### Solution 1: Positive Indexing for Soft Delete ✅
```javascript
// Instead of: deleted !== true (O(n))
// Use: deleted === false (O(1))
where: { deleted: false }
// Ensure all items have deleted field
if (!metadata.deleted) metadata.deleted = false
```
### Solution 2: Complement Indices for notEquals
```javascript
class MetadataIndexManager {
// For common notEquals queries, maintain complement sets
private complementIndices: Map<string, Set<string>> = new Map()
// Example: Track non-deleted items separately
private activeItems: Set<string> = new Set()
private deletedItems: Set<string> = new Set()
}
```
### Solution 3: Field Existence Bitmap
```javascript
class FieldExistenceIndex {
private fieldBitmaps: Map<string, BitSet> = new Map()
hasField(id: string, field: string): boolean {
return this.fieldBitmaps.get(field)?.has(id) ?? false
}
}
```
## Query Execution Strategy
### Progressive Search (When Metadata is Selective)
```
1. Field Filter (O(1) or O(log n)) → Small candidate set
2. Vector Search within candidates (O(k log k))
3. Fusion if needed
```
### Parallel Search (When Nothing is Selective)
```
1. Vector Search (O(log n)) → Top K results
2. Graph Traversal (O(m)) → Connected items
3. Field Filter (O(1)) → Metadata matches
4. Fusion: Intersection or Union
```
## Implementation Priority
1. **DONE** ✅ Fix soft delete to use `deleted: false`
2. **TODO** 🔧 Optimize notEquals for common fields
3. **TODO** 🔧 Add field existence index
4. **TODO** 🔧 Improve query optimizer intelligence
5. **TODO** 🔧 Add query explain mode for debugging
## Performance Targets
- Vector search: < 10ms for 1M items
- Metadata filter: < 1ms for exact match
- Combined query: < 20ms for complex queries
- Soft delete overhead: < 0.1ms (O(1))

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# Aggregation Architecture
> Write-time incremental aggregation with O(1) reads
## Design Principles
1. **Write-time computation** — aggregates update on every `add()`, `update()`, and `delete()`, not as batch jobs
2. **Incremental state** — running totals maintained per group, never rescanning the dataset
3. **Provider interface** — TypeScript engine is the default; plugins can replace it with native implementations
4. **Zero-allocation reads** — query results are computed from pre-aggregated state
## Component Overview
```
┌──────────────────────────────────────────────────────────┐
│ Brainy │
│ │
│ add() / update() / delete() │
│ │ │
│ ▼ │
│ ┌──────────────────────┐ ┌────────────────────────┐ │
│ │ AggregationIndex │ │ AggregateMaterializer │ │
│ │ │───▶│ (debounced writes) │ │
│ │ ├─ definitions Map │ └────────────────────────┘ │
│ │ ├─ states Map │ │
│ │ └─ staleMinMax Set │ ┌────────────────────────┐ │
│ │ │ │ timeWindows.ts │ │
│ │ Source filter ──────│───▶│ bucketTimestamp() │ │
│ │ Group key ──────────│───▶│ parseBucketRange() │ │
│ └──────────┬───────────┘ └────────────────────────┘ │
│ │ │
│ │ provider interface │
│ ▼ │
│ ┌──────────────────────┐ │
│ │ AggregationProvider │ (optional, registered by │
│ │ ├─ incrementalUpdate│ plugin like @soulcraft/cor) │
│ │ ├─ rebuildAggregate │ │
│ │ ├─ queryAggregate │ │
│ │ └─ serialize/restore│ │
│ └──────────────────────┘ │
└──────────────────────────────────────────────────────────┘
```
## State Management
### Definitions
Registered via `brain.defineAggregate(def)`. Stored in a `Map<string, AggregateDefinition>` keyed by aggregate name. Persisted to storage under `__aggregation_definitions__` on flush.
### Group State
Each aggregate maintains a `Map<string, AggregateGroupState>` where keys are serialized group key values (e.g., `category=food|date=2024-01`). Each group holds per-metric `MetricState`:
```typescript
interface MetricState {
sum: number // Running total
count: number // Entity count
min: number // Minimum (Infinity if empty)
max: number // Maximum (-Infinity if empty)
m2?: number // Welford's M2 for stddev/variance
}
```
### Change Detection
On restart, definition hashes (FNV-1a 32-bit) are compared with the persisted hash. If a definition changed (different groupBy, metrics, or source), the aggregate state is reset and must be rebuilt.
## Write-Time Update Flow
When `brain.add(entity)` is called:
```
1. For each registered aggregate:
├─ Source filter check (type, service, where)
│ └─ Skip if entity doesn't match
├─ Aggregate entity check
│ └─ Skip if entity.service === 'brainy:aggregation'
│ or entity.metadata.__aggregate is set
├─ Group key computation
│ └─ Extract groupBy fields from metadata
│ Apply time bucketing for windowed dimensions
└─ Metric update
└─ For each metric in the definition:
├─ count: increment count
├─ sum/avg: add value to sum, increment count
├─ min/max: compare and update
└─ stddev/variance: Welford's online update
```
### Update Handling
On `brain.update(entity)`, the engine reverses the old entity's contribution and applies the new entity's contribution. This correctly handles:
- **Value changes**: old amount=10, new amount=20 — sum adjusts by +10
- **Group key changes**: entity moves from category "food" to "drink" — both groups update
- **Source filter changes**: entity type changes from Event to Document — removed from matching aggregates
### Delete Handling
On `brain.remove(id)`, the engine reverses the entity's contribution:
- `count` and `sum` are decremented
- `min`/`max` may become stale (marked in `staleMinMax` for lazy recompute)
- Welford's M2 is updated with the inverse formula
- Empty groups (all metric counts at zero) are removed
## Algorithms
### Welford's Online Algorithm
Standard deviation and variance use Welford's numerically stable online algorithm with M2 tracking. This computes incrementally without storing individual values:
```
On add(x):
count += 1
oldMean = (sum - x) / (count - 1) // mean before this value
sum += x
mean = sum / count // mean after this value
M2 += (x - oldMean) * (x - mean)
On remove(x):
oldMean = sum / count
sum -= x
count -= 1
newMean = sum / count
M2 = max(0, M2 - (x - oldMean) * (x - newMean))
Sample variance = M2 / (count - 1)
Sample stddev = sqrt(variance)
```
M2 is clamped to zero on remove to prevent floating-point drift from producing negative values.
### MIN/MAX Handling
The TypeScript engine uses simple comparison for add operations and marks MIN/MAX as potentially stale on delete (since removing the current min/max value requires a rescan). Stale values are lazily recomputed on the next query.
The Cor native engine uses a `BTreeMap<OrderedFloat<f64>, u64>` that tracks the exact frequency of every value, providing precise MIN/MAX after any sequence of operations without rescanning.
### Time Window Bucketing
Timestamps (Unix milliseconds) are bucketed using UTC-based formatting:
| Granularity | Bucket Key | Algorithm |
|------------|-----------|-----------|
| `hour` | `2024-01-15T14` | UTC year-month-day-hour |
| `day` | `2024-01-15` | UTC year-month-day |
| `week` | `2024-W03` | ISO 8601 week (Monday start, week 1 contains first Thursday) |
| `month` | `2024-01` | UTC year-month |
| `quarter` | `2024-Q1` | `ceil((month) / 3)` |
| `year` | `2024` | UTC year |
| `{ seconds: N }` | ISO timestamp | `floor(timestamp / interval) * interval` |
Bucket keys can be parsed back into `{ start, end }` timestamp ranges via `parseBucketRange()`.
## Provider Interface
The `AggregationProvider` interface defines the contract between Brainy's `AggregationIndex` and plugin-provided native implementations:
```typescript
interface AggregationProvider {
defineAggregate?(def: AggregateDefinition): void
removeAggregate?(name: string): void
incrementalUpdate(
name: string,
def: AggregateDefinition,
entity: Record<string, unknown>,
op: 'add' | 'update' | 'delete',
prev?: Record<string, unknown>
): AggregateGroupState[]
computeGroupKey(
entity: Record<string, unknown>,
groupBy: GroupByDimension[]
): Record<string, string | number>
rebuildAggregate(
def: AggregateDefinition,
entities: Array<Record<string, unknown>>
): Map<string, AggregateGroupState>
queryAggregate(
state: Map<string, AggregateGroupState>,
params: AggregateQueryParams
): AggregateResult[]
restoreState?(data: string): void
serializeState?(): string
}
```
When a native provider is registered:
1. `AggregationIndex` delegates `incrementalUpdate()` to the provider instead of running TypeScript logic
2. Provider returns updated `AggregateGroupState[]` which are applied back into the state maps
3. Query execution is delegated via `queryAggregate()`
4. State serialization is delegated via `serializeState()`/`restoreState()`
Brainy retains ownership of the state maps and persistence. The provider handles computation.
## Materialization
The `AggregateMaterializer` converts aggregate group states into `NounType.Measurement` entities:
1. When an aggregate group is updated and `materialize` is enabled, `scheduleMaterialize()` is called
2. Materialization is debounced (default: 1000ms) to batch rapid updates during ingestion
3. On trigger, the materializer either creates or updates a `NounType.Measurement` entity
4. Materialized entities include `service: 'brainy:aggregation'` and `metadata.__aggregate` to prevent infinite loops
Materialized entities are automatically visible through:
- OData endpoints
- Google Sheets integration
- Server-Sent Events (SSE)
- Webhook notifications
## Persistence
### Storage Keys
| Key | Content |
|-----|---------|
| `__aggregation_definitions__` | Array of all definitions with FNV-1a hashes |
| `__aggregation_state_{name}__` | Per-aggregate group states (array of `AggregateGroupState`) |
| `__aggregation_native_state__` | Serialized native provider state (JSON string) |
### Lifecycle
1. **`init()`** — Load definitions, compare hashes, load matching state, restore native provider state
2. **Write operations** — Mark modified aggregates as dirty
3. **`flush()`** — Persist all dirty aggregate states and native provider state
4. **`close()`** — Flush and release resources
## Source Files
| File | Purpose |
|------|---------|
| `src/aggregation/AggregationIndex.ts` | Core engine: definitions, state, write hooks, query |
| `src/aggregation/materializer.ts` | Debounced materialization of results as entities |
| `src/aggregation/timeWindows.ts` | Time bucketing and bucket range parsing |
| `src/aggregation/index.ts` | Module exports |
| `src/types/brainy.types.ts` | Type definitions for all aggregation interfaces |

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# Augmentations System - What Actually Exists
> **Important Update**: Investigation reveals Brainy has MORE augmentations than documented!
## ✅ Actually Implemented Augmentations (12+)
Full implementation with crash recovery, checkpointing, and replay.
```typescript
// Fully working with all features documented
```
### 2. Entity Registry Augmentation ✅
High-performance deduplication using bloom filters.
```typescript
import { EntityRegistryAugmentation } from 'brainy'
// Complete with all features
```
### 3. Auto-Register Entities Augmentation ✅
Automatic entity extraction from text.
```typescript
import { AutoRegisterEntitiesAugmentation } from 'brainy'
// Extracts and registers entities automatically
```
### 4. Intelligent Verb Scoring Augmentation ✅
Multi-factor relationship strength calculation.
```typescript
import { IntelligentVerbScoringAugmentation } from 'brainy'
// Semantic, temporal, frequency scoring
```
### 5. Batch Processing Augmentation ✅
Dynamic batching with adaptive backpressure.
```typescript
import { BatchProcessingAugmentation } from 'brainy'
// Smart batching with flow control
```
### 6. Connection Pool Augmentation ✅
Intelligent connection management.
```typescript
import { ConnectionPoolAugmentation } from 'brainy'
// Auto-scaling connection pools
```
### 7. Request Deduplicator Augmentation ✅
Prevents duplicate operations.
```typescript
import { RequestDeduplicatorAugmentation } from 'brainy'
// In-flight request deduplication
```
### 8. WebSocket Conduit Augmentation ✅
Real-time bidirectional streaming.
```typescript
import { WebSocketConduitAugmentation } from 'brainy'
// Full WebSocket support
```
### 9. WebRTC Conduit Augmentation ✅
Peer-to-peer communication.
```typescript
import { WebRTCConduitAugmentation } from 'brainy'
// P2P data channels
```
### 10. Memory Storage Augmentation ✅
Optimized in-memory operations.
```typescript
import { MemoryStorageAugmentation } from 'brainy'
// Memory-specific optimizations
```
### 11. Server Search Augmentation ✅
Server-side search delegation over a conduit.
```typescript
import { ServerSearchConduitAugmentation } from 'brainy'
// Forwards queries to a remote Brainy server
```
### 12. Neural Import Augmentation ✅
AI-powered data understanding and import.
```typescript
import { NeuralImportAugmentation } from 'brainy'
// Full entity detection and classification
```
## 🎯 Hidden Features in Augmentations
### Neural Import Capabilities (Fully Implemented!)
```typescript
const neuralImport = new NeuralImport(brain)
// These ALL work:
await neuralImport.neuralImport('data.csv')
await neuralImport.detectEntitiesWithNeuralAnalysis(data)
await neuralImport.detectNounType(entity)
await neuralImport.detectRelationships(entities)
await neuralImport.generateInsights(data)
```
### Operation Modes (Fully Implemented!)
```typescript
// Read-only mode with optimized caching
const readerMode = new ReaderMode()
// 80% cache, aggressive prefetch, 1hr TTL
// Write-only mode with batching
const writerMode = new WriterMode()
// Large write buffer, batch writes, minimal cache
// Hybrid mode
const hybridMode = new HybridMode()
// Balanced for mixed workloads
```
### Advanced Caching (3-Level System!)
```typescript
const cacheManager = new CacheManager({
hotCache: { size: 1000, ttl: 60000 }, // L1 - RAM
warmCache: { size: 10000, ttl: 300000 }, // L2 - Fast storage
coldCache: { size: 100000, ttl: null } // L3 - Persistent
})
```
### Performance Monitoring (Complete!)
```typescript
const monitor = new PerformanceMonitor(brain)
// All these metrics work:
monitor.getMetrics() // Returns comprehensive stats
monitor.getQueryPatterns() // Query analysis
monitor.getCacheStats() // Cache performance
monitor.getThrottlingMetrics() // Rate limiting info
```
## 📊 Statistics System (Fully Working!)
```typescript
const stats = await brain.getStats()
// Returns comprehensive metrics:
{
nouns: {
count: number,
created: number,
updated: number,
deleted: number,
size: number,
avgSize: number
},
verbs: {
count: number,
created: number,
types: Record<string, number>,
weights: { min, max, avg }
},
vectors: {
dimensions: 384,
indexSize: number,
partitions: number,
avgSearchTime: number
},
cache: {
hits: number,
misses: number,
evictions: number,
hitRate: number,
hotCacheSize: number,
warmCacheSize: number
},
performance: {
operations: number,
avgAddTime: number,
avgSearchTime: number,
avgUpdateTime: number,
p95Latency: number,
p99Latency: number
},
storage: {
used: number,
available: number,
compression: number,
files: number
},
throttling: {
delays: number,
rateLimited: number,
backoffMs: number,
retries: number
}
}
```
## 🚀 GPU Support (Partial but Real!)
```typescript
// GPU detection WORKS:
const device = await detectBestDevice()
// Returns: 'cpu' | 'webgpu' | 'cuda'
// WebGPU support in browser:
if (device === 'webgpu') {
// Transformer models can use WebGPU
}
// CUDA detection in Node:
if (device === 'cuda') {
// Future: GPU acceleration support
}
```
## 🔄 Adaptive Systems (All Working!)
### Adaptive Backpressure
```typescript
const backpressure = new AdaptiveBackpressure()
// Automatically adjusts flow based on system load
```
### Adaptive Socket Manager
```typescript
const socketManager = new AdaptiveSocketManager()
// Dynamic connection pooling based on traffic
```
### Cache Auto-Configuration
```typescript
const cacheConfig = await getCacheAutoConfig()
// Sizes cache based on available memory
```
### S3 Throttling Protection
```typescript
// Built into S3 storage adapter
// Automatic exponential backoff
// Rate limit detection and adaptation
```
## 🎨 How to Use Hidden Features
### Enable Reader / Writer Modes
```typescript
const brain = new Brainy({
mode: 'reader' // or 'writer' or 'hybrid'
})
```
### Use Neural Import
```typescript
const brain = new Brainy({
augmentations: [
new NeuralImportAugmentation({
confidenceThreshold: 0.7,
autoDetect: true
})
]
})
// Import with AI understanding
await brain.neuralImport('data.csv')
```
### Access Statistics
```typescript
// Get comprehensive stats
const stats = await brain.getStats()
// Get specific service stats
const nounStats = await brain.getStatistics({
service: 'nouns'
})
// Force refresh
const freshStats = await brain.getStatistics({
forceRefresh: true
})
```
## 📝 What Needs Documentation
These features EXIST but need better docs:
1. Reader / writer operation modes
2. Neural import full API
3. 3-level cache configuration
4. Performance monitoring API
5. GPU acceleration setup
6. Advanced statistics queries
7. Throttling configuration
8. Backpressure tuning
## 💡 The Truth
Brainy is MORE powerful than its own documentation suggests! Most "missing" features are actually implemented but hidden or not properly exposed. The codebase contains sophisticated systems for:
- Reader / writer operation modes
- AI-powered import
- Advanced caching
- Performance monitoring
- GPU support
- Adaptive optimization
The main work needed is integration and documentation, not implementation!

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# Augmentations System
## Overview
Brainy's Augmentation System provides a powerful plugin architecture that extends core functionality without modifying the base code. Augmentations can intercept, modify, and enhance any operation in the database.
## Built-in Augmentations
> **Note**: This document shows both available and planned augmentations. Each section is marked with its current status.
### 1. Entity Registry Augmentation ✅ Available
High-performance deduplication for streaming data ingestion.
```typescript
import { EntityRegistryAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new EntityRegistryAugmentation({
maxCacheSize: 100000, // Track up to 100k unique entities
ttl: 3600000, // 1-hour TTL for cache entries
hashFields: ['id', 'url'] // Fields to use for deduplication
})
]
})
// Automatically prevents duplicate entities
await brain.add("Same content", { id: "123" }) // Added
await brain.add("Same content", { id: "123" }) // Skipped (duplicate)
```
**Benefits:**
- O(1) duplicate detection using bloom filters
- Configurable cache size and TTL
- Custom hash field selection
- Perfect for real-time data streams
Enterprise-grade durability and crash recovery.
```typescript
const brain = new Brainy({
augmentations: [
checkpointInterval: 1000, // Checkpoint every 1000 operations
compression: true, // Enable log compression
maxLogSize: 100 * 1024 * 1024 // 100MB max log size
})
]
})
// All operations are now durably logged
// Recover from crash
const recovered = new Brainy({
})
```
**Features:**
- ACID compliance
- Automatic crash recovery
- Point-in-time recovery
- Log compression and rotation
- Minimal performance impact
### 3. Intelligent Verb Scoring Augmentation ✅ Available
AI-powered relationship strength calculation.
```typescript
import { IntelligentVerbScoringAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new IntelligentVerbScoringAugmentation({
factors: {
semantic: 0.4, // Weight for semantic similarity
temporal: 0.3, // Weight for time proximity
frequency: 0.2, // Weight for interaction frequency
explicit: 0.1 // Weight for explicit ratings
}
})
]
})
// Relationships automatically get intelligent scores
await brain.relate(user1, product1, "viewed", { timestamp: Date.now() })
await brain.relate(user1, product1, "purchased", { timestamp: Date.now() })
// Automatically calculates relationship strength based on multiple factors
// Query using intelligent scores
const strongRelationships = await brain.find({
connected: {
from: user1,
minScore: 0.8 // Only highly relevant relationships
}
})
```
**Capabilities:**
- Multi-factor relationship scoring
- Temporal decay functions
- Semantic similarity integration
- Customizable weight factors
### 4. Auto-Register Entities Augmentation ⚠️ Basic Implementation
Automatically extracts and registers entities from text.
```typescript
import { AutoRegisterEntitiesAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new AutoRegisterEntitiesAugmentation({
types: ['person', 'organization', 'location', 'product'],
confidence: 0.8,
createRelationships: true
})
]
})
// Automatically extracts and registers entities
await brain.add(
"Apple CEO Tim Cook announced the new iPhone 15 in Cupertino",
{ type: "news" }
)
// Automatically creates:
// - Noun: "Tim Cook" (person)
// - Noun: "Apple" (organization)
// - Noun: "iPhone 15" (product)
// - Noun: "Cupertino" (location)
// - Verbs: relationships between entities
```
**Features:**
- NER (Named Entity Recognition)
- Automatic relationship inference
- Configurable entity types
- Confidence thresholds
### 5. Batch Processing Augmentation ✅ Available
Optimizes bulk operations for maximum throughput.
```typescript
import { BatchProcessingAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new BatchProcessingAugmentation({
batchSize: 100,
flushInterval: 1000, // Flush every second
parallel: true, // Parallel processing
maxQueueSize: 10000
})
]
})
// Operations are automatically batched
for (let i = 0; i < 10000; i++) {
await brain.add(`Item ${i}`) // Internally batched
}
// Processes in optimized batches of 100
```
**Benefits:**
- 10-100x throughput improvement
- Automatic batching
- Configurable batch sizes
- Memory-efficient queue management
### 6. Caching Augmentation 🚧 Coming Soon
Intelligent multi-level caching system.
```typescript
import { CachingAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new CachingAugmentation({
levels: {
l1: { size: 100, ttl: 60000 }, // Hot cache: 100 items, 1 min
l2: { size: 1000, ttl: 300000 }, // Warm cache: 1000 items, 5 min
l3: { size: 10000, ttl: 3600000 } // Cold cache: 10k items, 1 hour
},
strategies: ['lru', 'lfu'], // Least Recently/Frequently Used
preload: true // Preload popular items
})
]
})
// Queries automatically use cache
const results = await brain.find("popular query") // Cached
const again = await brain.find("popular query") // From cache (instant)
```
**Features:**
- Multi-level cache hierarchy
- Multiple eviction strategies
- Query result caching
- Embedding cache
- Automatic cache invalidation
### 7. Compression Augmentation 🚧 Coming Soon
Reduces storage size while maintaining query performance.
```typescript
import { CompressionAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new CompressionAugmentation({
algorithm: 'brotli',
level: 6, // Compression level (1-11)
threshold: 1024, // Only compress items > 1KB
excludeFields: ['id', 'type'] // Don't compress these
})
]
})
// Data automatically compressed/decompressed
await brain.add(largeDocument) // Compressed before storage
const doc = await brain.getNoun(id) // Decompressed on retrieval
```
**Benefits:**
- 60-80% storage reduction
- Transparent compression
- Selective field compression
- Multiple algorithm support
### 8. Monitoring Augmentation 🚧 Coming Soon
Real-time performance monitoring and metrics.
```typescript
import { MonitoringAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new MonitoringAugmentation({
metrics: ['operations', 'latency', 'cache', 'memory'],
interval: 5000, // Report every 5 seconds
webhook: 'https://metrics.example.com/brainy',
console: true // Also log to console
})
]
})
// Automatic metric collection
brain.on('metrics', (metrics) => {
console.log(`
Operations/sec: ${metrics.opsPerSecond}
Avg latency: ${metrics.avgLatency}ms
Cache hit rate: ${metrics.cacheHitRate}%
Memory usage: ${metrics.memoryMB}MB
`)
})
```
**Metrics:**
- Operation throughput
- Query latency percentiles
- Cache hit rates
- Memory usage
- Storage growth
- Error rates
## Neural Import Capabilities 🚧 Coming Soon
> **Note**: Import/Export features are currently in development. Expected Q1 2025.
### 1. Document Import with Auto-Structuring
```typescript
import { NeuralImportAugmentation } from 'brainy'
const brain = new Brainy({
augmentations: [
new NeuralImportAugmentation({
autoStructure: true,
extractEntities: true,
generateSummaries: true,
detectLanguage: true
})
]
})
// Import unstructured documents
await brain.importDocument('./research-paper.pdf')
// Automatically:
// - Extracts text and metadata
// - Identifies sections and structure
// - Extracts entities and concepts
// - Generates embeddings per section
// - Creates relationship graph
```
### 2. Database Migration Import
```typescript
// Import from existing databases
await brain.importFromSQL({
connection: 'postgres://localhost/mydb',
tables: {
users: { type: 'person', idField: 'user_id' },
products: { type: 'product', idField: 'sku' },
orders: {
type: 'relationship',
from: 'user_id',
to: 'product_id',
verb: 'purchased'
}
}
})
// Import from MongoDB
await brain.importFromMongo({
uri: 'mongodb://localhost:27017',
database: 'myapp',
collections: {
users: { type: 'person' },
posts: { type: 'content' }
}
})
```
### 3. Stream Import
```typescript
// Import from real-time streams
await brain.importStream({
source: 'kafka://localhost:9092/events',
format: 'json',
transform: (event) => ({
noun: event.data,
metadata: {
type: event.type,
timestamp: event.timestamp
}
}),
deduplication: true
})
```
### 4. Bulk CSV/JSON Import
```typescript
// Import CSV with automatic type detection
await brain.importCSV('./data.csv', {
headers: true,
typeColumn: 'entity_type',
detectRelationships: true,
batchSize: 1000
})
// Import JSON with nested structure handling
await brain.importJSON('./data.json', {
rootPath: '$.entities',
nounPath: '$.content',
metadataPath: '$.properties',
relationshipPath: '$.connections'
})
```
## Creating Custom Augmentations
```typescript
import { Augmentation } from 'brainy'
class CustomAugmentation extends Augmentation {
name = 'CustomAugmentation'
async onInit(brain: Brainy): Promise<void> {
// Initialize augmentation
console.log('Custom augmentation initialized')
}
async onBeforeAddNoun(content: any, metadata: any): Promise<[any, any]> {
// Modify before adding noun
metadata.processed = true
metadata.timestamp = Date.now()
return [content, metadata]
}
async onAfterAddNoun(id: string, noun: any): Promise<void> {
// React to noun addition
console.log(`Noun ${id} added`)
}
async onBeforeSearch(query: any): Promise<any> {
// Modify search query
query.boost = 'recent'
return query
}
async onAfterSearch(results: any[]): Promise<any[]> {
// Process search results
return results.map(r => ({
...r,
customScore: r.score * 1.5
}))
}
}
// Use custom augmentation
const brain = new Brainy({
augmentations: [new CustomAugmentation()]
})
```
## Augmentation Lifecycle Hooks
### Available Hooks
```typescript
interface AugmentationHooks {
// Initialization
onInit(brain: Brainy): Promise<void>
onShutdown(): Promise<void>
// Noun operations
onBeforeAddNoun(content, metadata): Promise<[content, metadata]>
onAfterAddNoun(id, noun): Promise<void>
onBeforeGetNoun(id): Promise<string>
onAfterGetNoun(noun): Promise<any>
onBeforeUpdateNoun(id, updates): Promise<[string, any]>
onAfterUpdateNoun(id, noun): Promise<void>
onBeforeDeleteNoun(id): Promise<string>
onAfterDeleteNoun(id): Promise<void>
// Verb operations
onBeforeAddVerb(source, target, type, metadata): Promise<[any, any, string, any]>
onAfterAddVerb(id, verb): Promise<void>
onBeforeGetVerb(id): Promise<string>
onAfterGetVerb(verb): Promise<any>
// Search operations
onBeforeSearch(query): Promise<any>
onAfterSearch(results): Promise<any[]>
onBeforeFind(query): Promise<any>
onAfterFind(results): Promise<any[]>
// Storage operations
onBeforeSave(data): Promise<any>
onAfterLoad(data): Promise<any>
// Events
onError(error): Promise<void>
onMetric(metric): Promise<void>
}
```
## Augmentation Composition
```typescript
// Combine multiple augmentations
const brain = new Brainy({
augmentations: [
// Order matters - executed in sequence
new EntityRegistryAugmentation(), // Deduplication first
new AutoRegisterEntitiesAugmentation(), // Entity extraction
new IntelligentVerbScoringAugmentation(), // Scoring
new CompressionAugmentation(), // Compression
new CachingAugmentation(), // Caching
new MonitoringAugmentation() // Monitoring last
]
})
```
## Performance Considerations
1. **Order Matters**: Place filtering augmentations early
2. **Resource Usage**: Monitor memory with many augmentations
3. **Async Operations**: Use parallel processing where possible
4. **Caching**: Enable caching augmentation for read-heavy workloads
## Best Practices
1. **Single Responsibility**: Each augmentation should do one thing well
2. **Non-Blocking**: Avoid blocking operations in hooks
3. **Error Handling**: Always handle errors gracefully
4. **Configuration**: Make augmentations configurable
5. **Documentation**: Document augmentation behavior and options
## See Also
- [Architecture Overview](./overview.md)
- [API Reference](../api/README.md)
- [Performance Guide](../guides/performance.md)

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# Brainy Data Storage Architecture (8.0)
**Complete on-disk reference for the 8.0 layout.**
This document describes what a Brainy 8.0 data directory actually contains: the
canonical entity records, the system area, the generational-MVCC bookkeeping,
the column store, the blob area, and the lock files — plus how the in-memory
indexes rebuild from them. The authoritative design records are
[ADR-001 (generational MVCC)](../ADR-001-generational-mvcc.md) and
[index-architecture.md](./index-architecture.md); this document is the on-disk
map that ties them together.
8.0 removed the 7.x copy-on-write subsystem (`_cow/`, `branches/{branch}/…`
paths) and the cloud/OPFS storage adapters. The two storage backends are
**filesystem** and **memory**; both speak the same path vocabulary (memory
storage keys its internal map by the identical path strings).
---
## 1. Directory Tree
A real 8.0 filesystem store (`path`, default `./brainy-data`):
```
brainy-data/
├── entities/ # Canonical records (current state)
│ ├── nouns/
│ │ └── {shard}/ # 256 shards: first 2 hex chars of the UUID
│ │ └── {id}/ # One directory per entity UUID
│ │ ├── vectors.json.gz # Embedding + HNSW node state
│ │ └── metadata.json.gz # Everything else (type, subtype, data, fields, _rev)
│ └── verbs/
│ └── {shard}/
│ └── {id}/
│ ├── vectors.json.gz # Relationship embedding (when present)
│ └── metadata.json.gz # sourceId, targetId, verb, subtype, weight, data…
├── _system/ # System singletons + bucketed system keys
│ ├── generation.json(.gz) # { generation, updatedAt } — the write watermark
│ ├── manifest.json # { version, generation, … } — MVCC commit point
│ ├── tx-log.jsonl # One line per committed transact() batch (append-only)
│ ├── counts.json # Entity/verb totals
│ ├── type-statistics.json.gz # Per-NounType counts
│ ├── subtype-statistics.json.gz # Per-(NounType, subtype) counts
│ ├── verb-subtype-statistics.json.gz # Per-(VerbType, subtype) counts
│ ├── statistics.json # Aggregate statistics blob (counts, index sizes)
│ ├── hnsw-system.json # Vector-index entry point + max level
│ ├── __metadata_field_registry__.json.gz # Which metadata fields are indexed
│ ├── brainy:entityIdMapper.json.gz # UUID ↔ u64 mapping for native index providers
│ └── idx/
│ └── {bucket}/ # 256 buckets: FNV-1a hash of the key
│ ├── __metadata_field_index__field_{name}.json.gz # Sparse field indexes
│ ├── __chunk__*.json.gz # Metadata-index roaring-bitmap chunks
│ ├── __sparse_index__*.json.gz# Zone maps + bloom filters
│ └── graph-lsm-verbs-{source|target}-*.json.gz # Graph LSM SSTables + manifest
├── _generations/ # MVCC history (written ONLY by transact())
│ └── {N}/ # One directory per committed generation N
│ ├── tx.json # The generation-N delta (immutable)
│ └── prev/
│ └── {id}.json # Before-image of each touched record (immutable)
├── _column_index/ # Column store manifests (one dir per field)
│ └── {field}/
│ └── MANIFEST.json.gz # Run list + zone metadata for that column
├── _blobs/ # Binary blob area (`<key>.bin` convention)
│ ├── _column_index/
│ │ └── {field}/
│ │ └── L0-000001.bin # Column-store runs (level-0 segments)
│ └── … # VFS file content and other binary blobs
└── locks/ # Process coordination (NEVER snapshotted)
├── _writer.lock # Single-writer lock: pid, hostname, heartbeat
├── _flush_requests/ # Reader→writer flush RPC (.req files)
└── _flush_responses/ # Writer acks (.ack files)
```
Most JSON objects are gzip-compressed (`.json.gz`) — compression is on by
default for filesystem storage (`storage.options.compression`, zlib level 6).
A few hot singletons (`manifest.json`, `counts.json`, `hnsw-system.json`,
`tx-log.jsonl`) are written uncompressed for cheap partial reads and appends.
---
## 2. Canonical Entity Records
Each entity (noun) and relationship (verb) is **two files** under one
ID-first directory. The split keeps vector I/O (large, append-mostly) separate
from metadata I/O (small, read-heavy).
### Noun vector file — `entities/nouns/{shard}/{id}/vectors.json.gz`
```json
{
"id": "421d92e7-4241-470a-80f4-4b39414e7a83",
"vector": [-0.139, -0.056, 0.028, "…384 dims…"],
"connections": { "0": ["neighbor-uuid…"] },
"level": 0
}
```
The HNSW node state (`connections`, `level`) is persisted with the vector so
the vector index can rebuild without recomputing the graph.
### Noun metadata file — `entities/nouns/{shard}/{id}/metadata.json.gz`
```json
{
"data": "React is a JavaScript library for building user interfaces",
"noun": "concept",
"subtype": "cli-add",
"createdAt": 1781198053726,
"updatedAt": 1781198053726,
"_rev": 1
}
```
- `noun` is the NounType. **Type lives in metadata, not in the path** — lookup
by ID is a single path construction, no type needed.
- `subtype` is the per-product sub-classification (required on write by
default in 8.0).
- `_rev` increments on every write and backs `update({ ifRev })` CAS.
- Consumer metadata fields sit alongside the standard ones.
### Verb files — `entities/verbs/{shard}/{id}/…`
Same two-file split. The verb metadata record carries the graph edge:
`sourceId`, `targetId`, `verb` (VerbType), `subtype`, `weight`, `data`,
`metadata`, timestamps, `_rev`. Verb IDs are Brainy-generated UUIDs by
contract (8.0 rejects caller-supplied verb ids) because native graph providers
intern the raw UUID bytes as u64 handles.
### Path construction
```typescript
const shard = id.substring(0, 2) // '42'
const metadataPath = `entities/nouns/${shard}/${id}/metadata.json`
const vectorsPath = `entities/nouns/${shard}/${id}/vectors.json`
// Verbs: same shape under entities/verbs/
```
Implemented in `src/storage/baseStorage.ts` (path generators) and
`src/storage/sharding.ts` (`getShardIdFromUuid`).
---
## 3. The `_system/` Area
Two kinds of keys live here, resolved by `BaseStorage.parsePath()`:
1. **Singletons** — well-known keys written at `_system/<key>.json`:
`counts`, `statistics`, `type-statistics`, `hnsw-system`,
`__metadata_field_registry__`, `brainy:entityIdMapper`, plus the MVCC
trio (`generation.json`, `manifest.json`, `tx-log.jsonl`).
2. **Bucketed system keys** — everything else (field indexes, bitmap chunks,
sparse-index segments, graph LSM SSTables) hashes into one of 256
`_system/idx/{bucket}/` directories via FNV-1a, so no single directory
accumulates unbounded entries.
Notable singletons:
| File | Contents |
|------|----------|
| `generation.json` | `{ generation, updatedAt }` — monotonic watermark, bumped by **every** write batch |
| `manifest.json` | MVCC commit point: highest *committed* generation (see §4) |
| `tx-log.jsonl` | One JSON line per committed `transact()` batch: generation, timestamp, `meta` |
| `type-statistics.json.gz` | Per-NounType counts (backs `brain.counts.byType`) |
| `subtype-statistics.json.gz` | `{ counts: { [type]: { [subtype]: n } }, updatedAt }` (contract-bound shape) |
| `verb-subtype-statistics.json.gz` | Same shape for VerbTypes |
| `hnsw-system.json` | `{ entryPointId, maxLevel }` — per-node state lives in each entity's `vectors.json` |
| `brainy:entityIdMapper.json.gz` | UUID ↔ u64 interning table for the BigInt provider contract |
| `__metadata_field_registry__.json.gz` | Registry of indexed metadata field names |
---
## 4. Generational MVCC (`_generations/` + the `_system` trio)
Full design in [ADR-001](../ADR-001-generational-mvcc.md). The on-disk shape:
```
_system/generation.json { generation, updatedAt } atomic tmp+rename
_system/manifest.json { version, generation, … } atomic tmp+rename — THE commit point
_system/tx-log.jsonl one line per committed transact() append-only
_generations/{N}/tx.json the generation-N delta immutable once written
_generations/{N}/prev/{id}.json before-image of {id} immutable once written
```
Commit protocol (writer side): stage before-images and the delta under
`_generations/N/`, fsync, apply the delta to the canonical `entities/…`
records, then atomically rename `manifest.json` to publish generation N. The
tx-log line is appended last (advisory). Crash recovery on open discards any
`_generations/{N}` newer than the manifest.
Two write classes share the generation clock:
- **Single-operation writes** (`add`/`update`/`remove`/`relate` outside
`transact()`) bump `generation.json` so watermarks and `_rev` CAS stay sound,
but write **no** history — they are not visible to `db.since()` and remain
visible through earlier pins.
- **`transact()` batches** write the full `_generations/{N}` record and a
tx-log line, and are the unit of time travel (`brain.asOf()`).
Snapshots (`db.persist(path)`) hard-link the entire store **except `locks/`**
into a self-contained directory openable via `Brainy.load(path)`.
---
## 5. Column Store (`_column_index/` + `_blobs/_column_index/`)
The metadata index persists per-field columnar runs for O(log n) range and
membership queries at scale:
- `_column_index/{field}/MANIFEST.json.gz` — the run list and zone metadata
for one field (`createdAt`, `subtype`, `noun`, `_rev`, consumer fields,
`__words__` for tokenized text…).
- `_blobs/_column_index/{field}/L0-NNNNNN.bin` — the actual level-0 run
segments, stored through the shared `_blobs/<key>.bin` binary convention.
Sparse per-field indexes, roaring-bitmap chunks, and zone-map/bloom segments
additionally live as bucketed keys under `_system/idx/` (see §3). Which path
serves a given `where` clause is the query planner's decision — inspect it
with `brainy inspect explain <dir> --where '…'`.
---
## 6. Blob Area (`_blobs/`)
`_blobs/<key>.bin` is the flat binary-blob convention shared by every storage
adapter (`saveBinaryBlob`/`getBinaryBlob` in the storage contract):
- **VFS file content** — VFS entities are regular nouns (path, ownership, and
timestamps in entity metadata); the file *bytes* are blobs.
- **Column-store runs** (under the `_column_index/` key prefix, §5).
- Any other binary payload an index provider persists.
Writes use unique temp names + rename, so concurrent writers of the same key
cannot tear each other's blobs.
---
## 7. Locks (`locks/`)
```
locks/_writer.lock # single-writer lock: { pid, hostname, startedAt, heartbeat, version }
locks/_flush_requests/ # readers drop <uuid>.req to ask the writer to flush
locks/_flush_responses/ # writer answers with <uuid>.ack
```
- One **writer** per data directory, enforced at `init()`; stale locks (dead
PID / stale heartbeat) are reclaimed automatically.
- Read-only processes (`Brainy.openReadOnly()`, the `brainy inspect` CLI
family) can ask the live writer to flush via the request/response files, so
out-of-process diagnostics see fresh state.
- `locks/` is excluded from snapshots (`SNAPSHOT_EXCLUDED_TOP_DIRS` in
`src/storage/adapters/fileSystemStorage.ts`).
---
## 8. In-Memory Indexes and What Rebuilds From What
| Index | In memory | Persisted state | Rebuild source |
|-------|-----------|-----------------|----------------|
| **Vector (HNSW)** | Graph of vector connections | `_system/hnsw-system.json` + per-entity `vectors.json` | Walk entity vector files; lazy mode loads structure only and pages vectors on demand |
| **Metadata index** | Field → value bitmaps + column-store readers | `_system/idx/` chunks + `_column_index/` manifests + `_blobs/_column_index/` runs | Loaded directly; full rebuild re-scans entity metadata |
| **Graph adjacency** | sourceId/targetId → verb-id LSM trees | `graph-lsm-verbs-{source,target}-*` SSTables under `_system/idx/` | Loaded from SSTables; full rebuild re-scans verb metadata |
| **Counts/statistics** | Per-type and per-subtype maps | `_system/{type,subtype,verb-subtype}-statistics.json.gz`, `counts.json` | Recomputable by scanning entities (`brainy inspect repair`) |
A pluggable index provider (the 8.0 plugin contract in
`@soulcraft/brainy/plugin`) may replace any of the JS implementations; the
persisted formats above are contract-bound so JS and native implementations
can interleave on the same directory.
---
## 9. Sharding Strategy
**Entities:** first 2 hex characters of the UUID → 256 uniform shards.
Deterministic, configuration-free, and keeps per-directory entry counts low
(at 1M entities: ~3,900 directories per shard). Paginated whole-store walks
(`getNouns`/`getVerbs`) iterate shards `00``ff` in order.
**System keys:** FNV-1a hash of the key → 256 `_system/idx/` buckets. Same
motivation, different keyspace (system keys are not UUIDs).
**What is never sharded:** the `_system/` singletons, `_generations/{N}`
directories (keyed by generation number), `_column_index/{field}` manifests
(keyed by field name), and `locks/`.
---
## 10. Durability and Atomicity
- **Per-object atomicity:** every JSON object and blob is written to a unique
temp file then `rename()`d — readers never observe torn objects.
- **Transaction atomicity:** the `manifest.json` rename is the single commit
point for `transact()` batches (§4); everything staged before it is
discarded by crash recovery if the rename never lands.
- **Compression:** gzip per object (`.json.gz`), transparent to all readers.
Native index providers that mmap binary formats use the uncompressed
`_blobs/` area instead.
---
## 11. `clear()` Semantics
`brain.clear()` removes all entities, relationships, indexes, statistics, and
MVCC history, then re-resolves every index exactly as `init()` does —
including plugin-provided vector/metadata/id-mapper factories and VFS root
re-creation. The data directory afterwards contains a fresh, empty store (the
writer lock remains held by the running process).
---
## 12. Common Scenarios
### Adding an entity
```
brain.add({ data, type, subtype })
1. Generate UUID → shard = first 2 hex chars
2. Embed data → 384-dim vector
3. Write entities/nouns/{shard}/{id}/vectors.json.gz (vector + HNSW node state)
4. Write entities/nouns/{shard}/{id}/metadata.json.gz (type/subtype/data/fields, _rev: 1)
5. Update in-memory indexes (HNSW insert, metadata index, statistics)
6. Bump _system/generation.json (no _generations/ entry — single-op write)
```
### Committing a transaction
```
await brain.transact(tx => { tx.add(…); tx.update(…) })
1. Stage _generations/{N}/prev/{id}.json before-images + tx.json delta; fsync
2. Apply the delta to canonical entities/… records
3. Atomic-rename _system/manifest.json → generation N is committed
4. Append one line to _system/tx-log.jsonl
```
### Cold start
```
await brain.init()
1. Acquire locks/_writer.lock (or open read-only)
2. Crash recovery: drop _generations/{N} newer than manifest.json
3. Load _system singletons (counts, statistics, field registry, id mapper)
4. Vector index: hnsw-system.json + entity vectors.json (lazy mode if large)
5. Graph adjacency: load LSM SSTables from _system/idx/
6. Metadata index: column-store manifests + bitmap chunks on demand
```
### Snapshot and restore
```
const db = brain.now(); await db.persist('/backups/today'); await db.release()
→ hard-links everything except locks/ into a self-contained directory
await Brainy.load('/backups/today') // open snapshot read-only as a Db
await brain.restore('/backups/today', { confirm: true }) // replace store state
```
---
## 13. Summary
- **Two backends** (filesystem, memory), one path vocabulary.
- **Two files per entity** under ID-first `entities/{kind}/{shard}/{id}/`.
- **Type and subtype are metadata**, not directory structure; type queries go
through the metadata index, not the filesystem.
- **`_system/`** holds singletons plus 256 hash buckets of index state.
- **`_generations/` + `manifest.json` + `tx-log.jsonl`** implement
generational MVCC. History is per-write: every `add()`/`update()`/`remove()`/
`relate()` gets its own generation, and `transact()` groups several ops into
one atomic generation. (Single-op retention has been the model since 8.0;
you never need to route a write through `transact()` just to keep its history.)
- **`_column_index/` + `_blobs/`** hold the columnar metadata runs and binary
blobs (VFS content included).
- **`locks/`** coordinates the single writer and reader flush requests, and
never travels with snapshots.
---
## Next Steps
- [ADR-001 — Generational MVCC](../ADR-001-generational-mvcc.md)
- [Index Architecture](./index-architecture.md)
- [Consistency Model](../concepts/consistency-model.md)
- [VFS Guide](../vfs/README.md)

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# 🎯 Brainy's Finite Noun/Verb Type System
> **Why Brainy's Finite Type System is Revolutionary for Knowledge Graphs at Billion Scale**
## Overview
Brainy introduces a **finite type system** that sits between traditional schemaless NoSQL and rigid relational databases. This approach unlocks unprecedented optimization opportunities while maintaining semantic flexibility.
---
## The Three-Way Comparison
### 1. Traditional NoSQL (Schemaless)
```typescript
// Complete freedom, zero optimization
{
id: '123',
randomField1: 'value',
anotherWeirdKey: 42,
whoKnowsWhatElse: { nested: 'chaos' }
}
```
**Problems:**
- ❌ No index optimization possible
- ❌ Tools can't understand data structure
- ❌ Incompatible augmentations/extensions
- ❌ Memory explosion with billions of unique keys
- ❌ No semantic understanding
- ❌ Query planning impossible
### 2. Traditional Relational (Rigid Schema)
```sql
CREATE TABLE entities (
id UUID PRIMARY KEY,
field1 VARCHAR(255),
field2 INTEGER,
...
field50 TEXT
);
```
**Problems:**
- ❌ Must define schema upfront
- ❌ Schema migrations are painful
- ❌ Can't handle heterogeneous data
- ❌ Requires restart for schema changes
- ❌ Fixed columns waste space
### 3. Brainy's Finite Type System (Semantic Structure)
```typescript
// Finite noun types (extensible but constrained)
type NounType =
| 'person' | 'place' | 'organization' | 'document'
| 'event' | 'concept' | 'thing' | ...
// Finite verb types (semantic relationships)
type VerbType =
| 'relatedTo' | 'contains' | 'isA' | 'causedBy'
| 'precedes' | 'influences' | ...
// Example usage
const entity = {
id: '123',
nounType: 'person', // Finite! Known type
vector: [...], // Semantic embedding
metadata: {
noun: 'person', // Required type field
name: 'Alice', // Custom fields allowed
occupation: 'Engineer' // Flexible metadata
}
}
```
**Benefits:**
- ✅ **Index Optimization**: Fixed-size Uint32Arrays for type tracking (99.76% memory reduction)
- ✅ **Semantic Understanding**: Types have meaning, not just structure
- ✅ **Tool Compatibility**: All augmentations understand core types
- ✅ **Concept Extraction**: NLP can map text to known types
- ✅ **Explicit Types**: Clear type specification in API
- ✅ **Query Optimization**: Type-aware query planning
- ✅ **Flexible Metadata**: Any fields within typed structure
- ✅ **Billion-Scale Ready**: Type tracking scales linearly
---
## Revolutionary Benefits in Detail
### 1. Index Optimization at Billion Scale
**The Problem**: Traditional NoSQL stores arbitrary field names in indexes:
```typescript
// Memory explosion with unique keys
Map<string, Set<string>> {
"user_preference_notification_email_enabled": Set(['id1', 'id2', ...]),
"customer_shipping_address_line_1": Set(['id3', 'id4', ...]),
// Billions of unique, unpredictable keys!
}
```
**Brainy's Solution**: Fixed noun/verb types enable fixed-size tracking:
```typescript
// 99.76% memory reduction with Uint32Arrays
class TypeAwareMetadataIndex {
// Fixed size: nounTypes × verbTypes × fieldCount
private nounTypeBitmaps: RoaringBitmap32[] // One per noun type
private verbTypeBitmaps: RoaringBitmap32[] // One per verb type
// Example: 100 noun types × 50 verb types = 5KB overhead
// vs 500MB+ for arbitrary keys!
}
```
**Real-World Impact (PROJECTED - not yet benchmarked)**:
- **Before**: 500MB memory for 1M entities with diverse keys
- **After**: PROJECTED 1.2MB memory for same dataset (385x reduction - calculated from Uint32Array size, not measured)
- **Scales to billions**: Memory grows with entity count, not key diversity
### 2. Explicit Type System
**The Design**: Specify types clearly in your API calls:
```typescript
import { Brainy, NounType, VerbType } from '@soulcraft/brainy'
// Add entity with explicit type
await brain.add({
data: { name: 'Alice', role: 'CEO of Acme Corp' },
type: NounType.Person // Explicit type specification
})
// Query with type filtering
await brain.find({
query: 'Alice',
type: NounType.Person // Type-optimized search
})
```
**Why Explicit Types?**:
1. **Deterministic**: You control exactly how entities are classified
2. **Predictable**: No inference surprises or edge cases
3. **Fast**: No neural processing overhead on every add/query
4. **Smaller**: No embedded keyword models needed
**Real-World Use Case**:
```typescript
// Import data with known types
await brain.add({
data: { name: 'Apple Inc.', industry: 'Technology' },
type: NounType.Organization
})
await brain.add({
data: { name: 'Cupertino', country: 'USA' },
type: NounType.Location
})
// Create relationship
await brain.relate({
from: appleId,
to: cupertinoId,
type: VerbType.LocatedIn
})
```
### 3. Tool & Augmentation Compatibility
**The Problem with Schemaless**: Every tool must handle infinite variations:
```typescript
// Incompatible tools
const tool1Data = { type: 'person', name: 'Alice' }
const tool2Data = { kind: 'human', fullName: 'Alice' }
const tool3Data = { entity_type: 'individual', person_name: 'Alice' }
// Tools can't understand each other!
```
**Brainy's Solution**: Finite types create a common language:
```typescript
// All tools/augmentations understand core types
interface NounMetadata {
noun: NounType // Agreed-upon type system
// ... custom fields
}
// Augmentation 1: Adds caching for 'person' entities
class PersonCacheAugmentation {
execute(op, params) {
if (params.noun?.metadata?.noun === 'person') {
// All person entities are understood!
}
}
}
// Augmentation 2: Enriches 'organization' entities
class OrgEnrichmentAugmentation {
execute(op, params) {
if (params.noun?.metadata?.noun === 'organization') {
// Fetch industry data, employees, etc.
}
}
}
// Augmentations compose seamlessly!
```
**Ecosystem Benefits**:
- Third-party augmentations are **interoperable**
- Type-specific optimizations are **portable**
- Query builders understand **semantic structure**
- Visualization tools render **type-appropriate** displays
- Import/export tools map to **universal types**
### 4. Concept Extraction & NLP Integration
**Traditional Approach**: Extract entities, ignore types:
```typescript
// Generic NER (Named Entity Recognition)
"Alice works at Google"
// → ['Alice', 'Google'] // What are these?
```
**Brainy's Approach**: Extract **typed** concepts:
```typescript
import { NaturalLanguageProcessor } from '@soulcraft/brainy'
const nlp = new NaturalLanguageProcessor()
const concepts = await nlp.extractConcepts("Alice works at Google in San Francisco")
// Returns typed entities:
[
{ text: 'Alice', nounType: 'person', confidence: 0.95 },
{ text: 'Google', nounType: 'organization', confidence: 0.98 },
{ text: 'San Francisco', nounType: 'place', confidence: 0.92 }
]
// And typed relationships:
[
{
from: 'Alice',
to: 'Google',
verbType: 'worksAt',
confidence: 0.88
},
{
from: 'Google',
to: 'San Francisco',
verbType: 'locatedIn',
confidence: 0.85
}
]
```
**Downstream Benefits**:
- **Smart Clustering**: Group by semantic type, not arbitrary keys
- **Type-Aware Queries**: "Find all organizations in California"
- **Relationship Reasoning**: "Who works at companies in SF?"
- **Automatic Ontology**: Types form natural hierarchy
### 5. Query Optimization & Planning
**The Problem**: Schemaless queries are guesswork:
```sql
-- MongoDB: No idea what fields exist
db.collection.find({ someField: 'value' })
// Full collection scan!
```
**Brainy's Solution**: Type-aware query planning:
```typescript
// Query planner knows types exist!
brain.find({
where: { noun: 'person' } // Type index lookup: O(1)!
})
// Multi-type queries are optimized
brain.find({
where: {
noun: ['person', 'organization'], // Bitmap union
location: 'California' // Then filter
}
})
// Relationship traversal is type-aware
brain.find({
verb: 'worksAt', // Verb type index
sourceType: 'person', // Source noun type index
targetType: 'organization' // Target noun type index
})
```
**Query Performance**:
- **Type Filtering**: O(1) bitmap intersection
- **Join Planning**: Type-aware join order optimization
- **Index Selection**: Automatic best index for type
- **Cardinality Estimation**: Type statistics guide planning
### 6. Architecture & Development Benefits
#### Memory-Efficient Type Tracking
```typescript
// Traditional approach: Map per field
class TraditionalIndex {
private fieldIndexes: Map<string, Map<any, Set<string>>>
// Memory: O(unique_fields × unique_values × entities)
}
// Brainy approach: Fixed Uint32Array per type
class TypeAwareIndex {
private nounTypeTracking: Uint32Array // Fixed size!
private typeIndexes: RoaringBitmap32[] // One per type
// Memory: O(noun_types) + O(entities_per_type)
// PROJECTED: 385x smaller at billion scale (calculated from architecture, not benchmarked)
}
```
#### Type-Driven Code Organization
```typescript
// Natural code structure follows types
/src
/nouns
/person
personStorage.ts // Type-specific storage
personQueries.ts // Type-specific queries
personAugmentation.ts // Type-specific logic
/organization
orgStorage.ts
orgQueries.ts
orgAugmentation.ts
/verbs
/worksAt
worksAtValidation.ts // Relationship rules
worksAtInference.ts // Type inference
```
#### Type Safety in TypeScript
```typescript
// Compiler-enforced type correctness
function processPerson(noun: Noun) {
if (noun.metadata.noun === 'person') {
// TypeScript narrows type!
const name: string = noun.metadata.name // Safe access
}
}
// Exhaustive type checking
function processNoun(noun: Noun) {
switch (noun.metadata.noun) {
case 'person': return handlePerson(noun)
case 'place': return handlePlace(noun)
case 'organization': return handleOrg(noun)
// Compiler error if missing cases!
}
}
```
---
## Public API: Type System
The type system is **fully public** for developers and augmentation authors:
```typescript
import {
NounType,
VerbType,
getNounTypes,
getVerbTypes,
BrainyTypes,
suggestType
} from '@soulcraft/brainy'
// Get all available noun types
const nounTypes = getNounTypes()
// → ['Person', 'Organization', 'Location', 'Thing', 'Concept', ...]
// Get all available verb types
const verbTypes = getVerbTypes()
// → ['RelatedTo', 'Contains', 'CreatedBy', 'LocatedIn', ...]
// Use types directly
await brain.add({
data: { name: 'Alice' },
type: NounType.Person
})
// Query by type
await brain.find({
type: NounType.Person,
where: { name: 'Alice' }
})
```
**Use Cases**:
- **Type-Safe Code**: Use TypeScript enums for compile-time checking
- **Import Tools**: Specify entity types during data import
- **Query Builders**: Filter by known types
- **Augmentations**: Type-specific processing pipelines
- **Visualization**: Type-appropriate rendering
---
## Real-World Performance Comparison
### Scenario: 1 Billion Entities with Rich Metadata
| Aspect | NoSQL (Schemaless) | Relational (Fixed) | Brainy (Finite Types) |
|--------|-------------------|-------------------|----------------------|
| **Memory (Indexes)** | 500GB+ | 250GB | 1.3GB |
| **Type Lookup** | Full scan | O(log n) | O(1) bitmap |
| **Add New Type** | Zero cost | Schema migration! | Register type |
| **Query Planning** | Impossible | Table statistics | Type statistics |
| **Tool Compatibility** | None | SQL only | Full ecosystem |
| **Semantic Understanding** | None | None | Built-in |
| **Concept Extraction** | Manual | Manual | Via SmartExtractor |
| **Flexibility** | Infinite | Zero | Optimal balance |
---
## Design Principles
### 1. Finite but Extensible
```typescript
// Core types are finite
const coreNounTypes = [
'person', 'place', 'organization', 'thing', ...
]
// But easily extended
brain.registerNounType('chemical_compound', {
keywords: ['molecule', 'compound', 'element'],
synonyms: ['substance', 'material'],
parentType: 'thing'
})
```
### 1a. Subtypes — sub-classification without hierarchy
The 42-type taxonomy is intentionally coarse. Per-product vocabulary fits on the **`subtype`** axis — a top-level standard string field on every entity. Flat by design — no hierarchy, no parent chain, no recursive resolution. That preserves the Uint32Array-backed O(1) type stats while giving consumers a place to put `'employee'` / `'customer'` / `'invoice'` / `'milestone'` without burning a slot in the global enum.
```typescript
// Same NounType, different subtypes:
await brain.add({ type: NounType.Person, subtype: 'employee' })
await brain.add({ type: NounType.Person, subtype: 'customer' })
await brain.add({ type: NounType.Document, subtype: 'invoice' })
// Fast path — column-store hit, not metadata fallback:
await brain.find({ type: NounType.Person, subtype: 'employee' })
// Per-NounType-per-subtype counts maintained incrementally:
brain.counts.bySubtype(NounType.Person)
// → { employee: 12, customer: 847 }
```
Subtype has its own statistics rollup (`_system/subtype-statistics.json`) maintained alongside `nounCountsByType`, so per-subtype counts stay O(1) at billion scale.
The same principle applies to **VerbTypes** (7.30+): the 127-verb taxonomy is intentionally coarse, and `subtype` is the per-product axis for relationships too. A `ReportsTo` relationship might carry `subtype: 'direct'` vs `'dotted-line'`; a `RelatedTo` edge might carry `'spouse'` / `'colleague'`. Verb-side rollup lives at `_system/verb-subtype-statistics.json` with identical shape to the noun-side rollup. Per-VerbType-per-subtype counts are O(1) via `brain.counts.byRelationshipSubtype()`. Brainy's design is fully symmetric — nouns and verbs are first-class peers with identical capability surfaces.
Full guide: **[Subtypes & Facets](../guides/subtypes-and-facets.md)**.
### 2. Semantic not Structural
```typescript
// NOT structural types
type Person = {
name: string
age: number
// Fixed structure
}
// Semantic types
type Noun = {
nounType: 'person', // Semantic meaning!
metadata: {
noun: 'person', // Required type
// Any custom fields!
}
}
```
### 3. Optimizable yet Flexible
```typescript
// Optimized type tracking
const typeIndex = new RoaringBitmap32() // 99.76% smaller!
// Flexible metadata
const metadata = {
noun: 'person', // Required type
customField1: 'value', // Your fields
customField2: 123, // Any structure
nested: { ... } // Full flexibility
}
```
---
## Conclusion
Brainy's **Finite Noun/Verb Type System** is revolutionary because it achieves the impossible:
1. ✅ **Billion-scale performance** (99.76% memory reduction)
2. ✅ **Semantic understanding** (NLP integration)
3. ✅ **Tool compatibility** (ecosystem interoperability)
4. ✅ **Query optimization** (type-aware planning)
5. ✅ **Concept extraction** (via SmartExtractor for imports)
6. ✅ **Developer experience** (clean architecture)
7. ✅ **Flexibility** (metadata freedom within types)
It's not schemaless chaos. It's not rigid relational constraints. It's **semantic structure** - the perfect balance for knowledge graphs at scale.
---
## Further Reading
- [Storage Architecture](./storage-architecture.md) - How types enable billion-scale storage
- [Augmentation System](./augmentations.md) - Building type-aware augmentations
- [Query Optimization](../api/query-optimization.md) - Type-aware query planning
- [Import Flow](../guides/import-flow.md) - How types work in the import pipeline
---
*Brainy's finite type system: The foundation of billion-scale, semantically-aware knowledge graphs.*

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# Index Architecture
Brainy uses a sophisticated **3-tier index architecture** that enables "Triple Intelligence" - the unified combination of vector similarity, graph relationships, and metadata filtering. This document provides a comprehensive architectural overview of how these indexes work internally and coordinate with each other.
## Overview: The Three Main Indexes + Sub-Indexes
Brainy has **3 main indexes** at the top level, each with multiple sub-indexes managed automatically:
### Main Indexes (Level 1)
| Index | Purpose | Data Structure | Complexity | File Location | rebuild() Method |
|-------|---------|----------------|------------|---------------|------------------|
| **TypeAwareVectorIndex** | Type-aware vector similarity search | 42 type-specific hierarchical graphs | O(log n) search | `src/hnsw/typeAwareHNSWIndex.ts` | ✅ Line 403 |
| **MetadataIndexManager** | Fast metadata filtering | Chunked sparse indices with bloom filters + zone maps + roaring bitmaps | O(1) exact, O(log n) ranges | `src/utils/metadataIndex.ts` | ✅ Line 2318 |
| **GraphAdjacencyIndex** | Relationship traversal | 2 verb-id LSM-trees + tombstone-filtered adjacency derivation | O(degree) per hop | `src/graph/graphAdjacencyIndex.ts` | ✅ Line 389 |
### Sub-Indexes (Level 2)
**TypeAwareVectorIndex contains:**
- **42 type-specific vector indexes** - One per NounType (automatically rebuilt via parent)
**MetadataIndexManager contains:**
- **ChunkManager** - Adaptive chunked sparse indexing
- **EntityIdMapper** - UUID ↔ integer mapping for roaring bitmaps
- **FieldTypeInference** - DuckDB-inspired value-based field type detection
- **Field Sparse Indexes** - Per-field sparse indexes with roaring bitmaps (dynamic count)
- **Sorted Indexes** - Support orderBy queries (automatically maintained)
- **Word Index (`__words__`)** - Text search via FNV-1a word hashes
**GraphAdjacencyIndex contains:**
- **lsmTreeSource** - Source → Targets (outgoing edges)
- **lsmTreeTarget** - Target → Sources (incoming edges)
- **lsmTreeVerbsBySource** - Source → Verb IDs
- **lsmTreeVerbsByTarget** - Target → Verb IDs
All indexes share a **UnifiedCache** for coordinated memory management, ensuring fair resource allocation and preventing any single index from monopolizing memory.
## 1. MetadataIndex - Fast Field Filtering
**Purpose**: Enable O(1) field-value lookups and O(log n) range queries on metadata fields using adaptive chunked sparse indexing.
### Internal Architecture
```typescript
class MetadataIndexManager {
// Chunked sparse indices: field → SparseIndex (replaces flat files)
private sparseIndices = new Map<string, SparseIndex>()
// Chunk management
private chunkManager: ChunkManager
private chunkingStrategy: AdaptiveChunkingStrategy
// Lightweight field statistics
private fieldIndexes = new Map<string, FieldIndexData>() // value → count
private fieldStats = new Map<string, FieldStats>() // cardinality tracking
// Type-field affinity for NLP understanding
private typeFieldAffinity = new Map<string, Map<string, number>>()
// Shared memory management
private unifiedCache: UnifiedCache
}
```
### Key Data Structures
#### Chunked Sparse Index
```typescript
// SparseIndex: Directory of chunks for a field
// Example: field="status"
class SparseIndex {
field: string
chunks: ChunkDescriptor[] // Metadata about each chunk
bloomFilters: BloomFilter[] // Fast membership testing
}
// ChunkDescriptor: Metadata about a chunk
interface ChunkDescriptor {
chunkId: number
valueCount: number // How many unique values in this chunk
idCount: number // Total entity IDs
zoneMap: ZoneMap // Min/max for range queries
lastUpdated: number
}
// Actual chunk data stored separately
class ChunkData {
chunkId: number
field: string
entries: Map<value, RoaringBitmap32> // ~50 values per chunk (roaring bitmaps!)
}
```
**Performance**:
- O(1) exact lookup with bloom filters (1% false positive rate)
- O(log n) range queries with zone maps
- 630x file reduction (560k flat files → 89 chunk files)
#### Roaring Bitmap Optimization
**Problem Solved**: JavaScript `Set<string>` for storing entity IDs was inefficient:
- Memory overhead: ~40 bytes per UUID string (36 chars + overhead)
- Slow intersection: JavaScript array filtering for multi-field queries
- No hardware acceleration
**Solution**: Replace `Set<string>` with `RoaringBitmap32` (WebAssembly implementation) for 90% memory savings and hardware-accelerated operations. Uses `roaring-wasm` package for universal compatibility (Node.js, browsers, serverless) without requiring native compilation.
```typescript
// EntityIdMapper: UUID ↔ Integer mapping
class EntityIdMapper {
private uuidToInt = new Map<string, number>()
private intToUuid = new Map<number, string>()
private nextId = 1
getOrAssign(uuid: string): number {
// O(1) mapping: UUIDs → integers for bitmap storage
let intId = this.uuidToInt.get(uuid)
if (!intId) {
intId = this.nextId++
this.uuidToInt.set(uuid, intId)
this.intToUuid.set(intId, uuid)
}
return intId
}
intsIterableToUuids(ints: Iterable<number>): string[] {
// Convert bitmap results back to UUIDs
const result: string[] = []
for (const intId of ints) {
const uuid = this.intToUuid.get(intId)
if (uuid) result.push(uuid)
}
return result
}
}
// ChunkData now uses RoaringBitmap32 instead of Set<string>
class ChunkData {
chunkId: number
field: string
entries: Map<string, RoaringBitmap32> // value → bitmap of integer IDs
}
```
**Key Benefits**:
- **90% memory savings**: Roaring bitmaps compress much better than UUID strings
- **Hardware-accelerated operations**: SIMD instructions (AVX2/SSE4.2) for ultra-fast bitmap AND/OR
- **Portable serialization**: Cross-platform compatible format (Java/Go/Node.js)
- **Lazy conversion**: UUIDs converted to integers only once, not per query
**Multi-Field Intersection (THE BIG WIN!)**:
```typescript
// Before: JavaScript array filtering
async getIdsForFilter(filter: {status: 'active', role: 'admin'}): Promise<string[]> {
// 1. Fetch UUID arrays for each field
const statusIds = await this.getIds('status', 'active') // ["uuid1", "uuid2", ...]
const roleIds = await this.getIds('role', 'admin') // ["uuid2", "uuid3", ...]
// 2. JavaScript intersection (SLOW!)
return statusIds.filter(id => roleIds.includes(id)) // O(n*m) array filtering
}
// After: Roaring bitmap intersection
async getIdsForMultipleFields(pairs: [{field, value}, ...]): Promise<string[]> {
// 1. Fetch roaring bitmaps (integers, not UUIDs)
const bitmaps: RoaringBitmap32[] = []
for (const {field, value} of pairs) {
const bitmap = await this.getBitmapFromChunks(field, value)
if (!bitmap) return [] // Short-circuit if any field has no matches
bitmaps.push(bitmap)
}
// 2. Hardware-accelerated intersection (FAST! AVX2/SSE4.2 SIMD)
const result = RoaringBitmap32.and(...bitmaps) // O(1) hardware operation!
// 3. Convert final bitmap to UUIDs (once, not per-field)
return this.idMapper.intsIterableToUuids(result)
}
```
**Performance Impact**:
- Multi-field intersection: **1.4x average speedup**, up to 3.3x on 10K entities
- Memory usage: **90% reduction** (17.17 MB → 2.01 MB for 100K entities)
- Hardware acceleration: SIMD instructions make bitmap operations nearly free
**Benchmark Results** — example output from a single run of `tests/performance/roaring-bitmap-benchmark.ts` (1,000 queries per size, one machine; absolute times vary by hardware, the relative speedup and memory savings are the durable signal):
| Dataset Size | Operation | Set Time | Roaring Time | Speedup | Memory Savings |
|--------------|-----------|----------|--------------|---------|----------------|
| 10,000 entities | 3-field intersection | 3.74ms | 1.14ms | **3.3x faster** | 90% |
| 100,000 entities | 3-field intersection | 2.60ms | 1.78ms | **1.5x faster** | 88% |
**Implementation**: See `src/utils/entityIdMapper.ts` and benchmark at `tests/performance/roaring-bitmap-benchmark.ts`
#### Bloom Filter (Probabilistic Membership Testing)
```typescript
class BloomFilter {
bits: Uint8Array // Bit array
size: number // Total bits
hashCount: number // Number of hash functions (FNV-1a, DJB2)
mightContain(value): boolean // ~1% false positive, 0% false negative
}
```
**Use case**: Quickly skip chunks that definitely don't contain a value
#### Zone Map (Range Query Optimization)
```typescript
interface ZoneMap {
min: any | null // Minimum value in chunk
max: any | null // Maximum value in chunk
count: number // Number of entries
hasNulls: boolean // Whether chunk contains null values
}
```
**Use case**: Skip entire chunks during range queries (ClickHouse-inspired)
#### Type-Field Affinity
```typescript
// Tracks which fields are commonly used with which types
// Example:
// typeFieldAffinity.get('character') → {
// 'name': 127, // 127 characters have a 'name' field
// 'age': 89, // 89 characters have an 'age' field
// 'alignment': 45 // 45 characters have an 'alignment' field
// }
```
**Use case**: Enables NLP to understand "find characters named John" → knows 'name' is a character field
#### Word Index (`__words__`) -
```typescript
// Special field for text/keyword search
// Entity text content is tokenized and indexed as word hashes
// Tokenization:
// "David Smith is a software engineer" → ["david", "smith", "is", "software", "engineer"]
// Word Hashing (FNV-1a):
// "david" → hashWord("david") → 1234567 (int32)
// "smith" → hashWord("smith") → 9876543 (int32)
// Index structure (same as other fields):
// __words__ → 1234567 → RoaringBitmap{entity1, entity5, ...}
// __words__ → 9876543 → RoaringBitmap{entity1, entity3, ...}
```
**Design Decisions**:
- **Max 50 words per entity**: Prevents index bloat for large documents
- **FNV-1a hashing**: Fast, low collision rate, int32 output
- **Min word length 2 chars**: Filters out noise words
- **Lowercase normalization**: Case-insensitive matching
- **Automatic integration**: Words extracted via `extractIndexableFields()`
**Hybrid Search**: Text results combined with vector results using Reciprocal Rank Fusion (RRF):
```typescript
// RRF formula: score(d) = sum(1 / (k + rank(d)))
// where k = 60 (standard constant)
// alpha = weight for semantic (0 = text only, 1 = semantic only)
```
### Query Algorithm
**Exact Match Query**:
```typescript
async getIds(field: string, value: any): Promise<string[]> {
// 1. Load sparse index for field
const sparseIndex = await this.loadSparseIndex(field)
// 2. Find candidate chunks using bloom filters
const candidateChunks = sparseIndex.findChunksForValue(value)
// → Bloom filter checks all chunks (~1ms)
// → Returns only chunks that *might* contain value
// 3. Load candidate chunks and collect IDs
const results = []
for (const chunkId of candidateChunks) {
const chunk = await this.chunkManager.loadChunk(field, chunkId)
const ids = chunk.entries.get(value)
if (ids) results.push(...ids)
}
return results
}
```
**Range Query**:
```typescript
async getIdsForRange(field: string, min: any, max: any): Promise<string[]> {
// 1. Load sparse index for field
const sparseIndex = await this.loadSparseIndex(field)
// 2. Find candidate chunks using zone maps
const candidateChunks = sparseIndex.findChunksForRange(min, max)
// → Check zoneMap.min and zoneMap.max for each chunk
// → Skip chunks where max < min or min > max
// 3. Load chunks and filter values
const results = []
for (const chunkId of candidateChunks) {
const chunk = await this.chunkManager.loadChunk(field, chunkId)
for (const [value, ids] of chunk.entries) {
if (value >= min && value <= max) {
results.push(...ids)
}
}
}
return results
}
```
**Benefits**:
- Bloom filters: Skip 99% of irrelevant chunks (exact match)
- Zone maps: Skip entire chunks that fall outside range
- Adaptive chunking: ~50 values per chunk optimizes I/O
- Immediate flushing: No need for dirty tracking or batch writes
### Temporal Bucketing
**Problem Solved**: High-cardinality timestamp fields created massive file pollution.
- Example: 575 entities with unique timestamps → 358,407 index files (98.7% pollution!)
**Solution**: Automatic bucketing of temporal fields to 1-minute intervals.
```typescript
// In normalizeValue(value, field):
if (field && typeof value === 'number') {
const fieldLower = field.toLowerCase()
const isTemporal = fieldLower.includes('time') ||
fieldLower.includes('date') ||
fieldLower.includes('accessed') ||
fieldLower.includes('modified') ||
fieldLower.includes('created') ||
fieldLower.includes('updated')
if (isTemporal) {
// Bucket to 1-minute intervals
const bucketSize = 60000 // milliseconds
const bucketed = Math.floor(value / bucketSize) * bucketSize
return bucketed.toString()
}
}
```
**Benefits**:
- ✅ Reduces 575 unique timestamps → ~10 buckets
- ✅ File count: 358,407 → ~4,600 (98.7% reduction)
- ✅ Zero configuration - automatic field name detection
- ✅ Still enables range queries (not excluded like before)
- ✅ 1-minute precision sufficient for most use cases
**Field Name Detection**: Automatically buckets fields with these keywords:
- `time`, `date`, `accessed`, `modified`, `created`, `updated`
- Examples: `timestamp`, `createdAt`, `lastModified`, `birthdate`, `eventTime`
### Operations
```typescript
// Add to index (src/brainy.ts:387)
await this.metadataIndex.addToIndex(id, metadata)
// Query exact match
const ids = await this.metadataIndex.getIds('status', 'active')
// Query range
const ids = await this.metadataIndex.getIdsForFilter({
publishDate: { greaterThan: 1640995200000 }
})
// Filter discovery (what values exist for a field)
const values = await this.metadataIndex.getFilterValues('status')
// → ['active', 'archived', 'draft']
// Statistics (O(1))
const totalEntities = this.metadataIndex.getTotalEntityCount()
const typeBreakdown = this.metadataIndex.getAllEntityCounts()
// → Map { 'character': 127, 'item': 89, 'location': 45 }
```
### Excluded Fields
Some fields are excluded from indexing to prevent pollution:
```typescript
const DEFAULT_EXCLUDE_FIELDS = [
'id', // Primary key (redundant to index)
'uuid', // Alternative primary key
'vector', // High-dimensional data
'embedding', // Same as vector
'content', // Large text content
'description', // Large text content
'metadata', // Nested object (too large)
'data' // Generic nested object
]
```
**Note**: Timestamp fields like `modified`, `accessed`, `created` are NO LONGER excluded as of they are indexed with automatic bucketing.
## 2. Vector Index - Vector Similarity Search
**Purpose**: O(log n) semantic similarity search using vector embeddings.
The default JS implementation is `JsHnswVectorIndex`; an optional native acceleration package (`@soulcraft/cor`) can register a higher-performing `VectorIndexProvider` through the plugin system. The public API stays the same either way.
### Internal Architecture
```typescript
class JsHnswVectorIndex {
// Per-noun indexes for efficiency
private nouns: Map<string, HNSWNoun> = new Map()
// Global entry point for search
private entryPointId: string | null = null
private maxLevel = 0
// Shared memory management
private unifiedCache: UnifiedCache
private storage: BaseStorage | null = null
}
// Each noun has its own HNSW graph
class HNSWNoun {
noun: string
nodes: Map<string, HNSWNode>
entryPointId: string | null
maxLevel: number
}
// Each node in the graph
class HNSWNode {
id: string
vector: Vector | null // Lazy-loaded from storage
level: number
connections: Map<number, string[]> // level → neighbor IDs
}
```
### Hierarchical Graph Structure
The default vector index builds a multi-layered graph:
```
Layer 2: [entry] ←→ [node1] (sparse, long-range connections)
↓ ↓
Layer 1: [entry] ←→ [node1] ←→ [node2] ←→ [node3] (medium density)
↓ ↓ ↓ ↓
Layer 0: [entry] ←→ [node1] ←→ [node2] ←→ [node3] ←→ [node4] ←→ [node5] (dense, all nodes)
```
**Search Algorithm**:
1. Start at entry point in top layer
2. Greedy search for nearest neighbor in current layer
3. Move down to next layer with found neighbor
4. Repeat until reaching layer 0
5. Return k nearest neighbors
**Complexity**: O(log n) due to hierarchical structure
### Adaptive Vector Loading
Vectors are lazy-loaded on demand based on memory availability:
```typescript
private async getVectorSafe(noun: HNSWNoun): Promise<Vector> {
// Check UnifiedCache first
const cached = this.unifiedCache.get(noun.id)
if (cached) return cached
// Load from storage if memory available
if (this.unifiedCache.canCache()) {
const vector = await this.storage.loadVector(noun.id)
this.unifiedCache.set(noun.id, vector)
return vector
}
// Load transiently if memory pressure
return await this.storage.loadVector(noun.id)
}
```
### Operations
```typescript
// Add entity (src/brainy.ts:add)
await this.index.addEntity(id, vector, noun)
// Search for similar vectors
const results = await this.index.search(queryVector, k, threshold)
// Returns: Array<{id: string, similarity: number}>
// Rebuild from storage
await this.index.rebuild()
```
## 3. GraphAdjacencyIndex - O(1) Relationship Traversal
**Purpose**: Constant-time neighbor lookups regardless of graph size.
### Internal Architecture
```typescript
class GraphAdjacencyIndex {
// O(1) bidirectional lookups
private sourceIndex = new Map<string, Set<string>>() // sourceId → targetIds
private targetIndex = new Map<string, Set<string>>() // targetId → sourceIds
// Full relationship data
private verbIndex = new Map<string, GraphVerb>() // verbId → metadata
// Statistics
private relationshipCountsByType = new Map<string, number>()
// Shared memory
private unifiedCache: UnifiedCache
private storage: BaseStorage
}
```
### Key Innovation: Bidirectional Adjacency
**Core Insight**: Store BOTH directions of each relationship for O(1) lookups.
```typescript
// Example: Alice KNOWS Bob
// verbId = "verb-123"
// Source index: Alice → Bob
sourceIndex.set('alice', Set(['bob']))
// Target index: Bob ← Alice
targetIndex.set('bob', Set(['alice']))
// Full metadata
verbIndex.set('verb-123', {
id: 'verb-123',
verb: 'knows',
source: 'alice',
target: 'bob',
metadata: { since: 2020 }
})
```
**Result**: Finding Alice's friends OR Bob's friends is O(1) - just one Map lookup!
### Operations
```typescript
// Add relationship (src/brainy.ts:relate)
await this.graphIndex.addRelationship(verbId, sourceId, targetId, verb)
// Get neighbors (O(1) per hop)
const outgoing = await this.graphIndex.getNeighbors(id, 'out') // Who does id point to?
const incoming = await this.graphIndex.getNeighbors(id, 'in') // Who points to id?
const both = await this.graphIndex.getNeighbors(id, 'both') // All neighbors
// Get relationships
const verbs = await this.graphIndex.getRelationships(sourceId, targetId)
// Statistics (O(1))
const totalRelationships = this.graphIndex.getTotalRelationshipCount()
const byType = this.graphIndex.getRelationshipCountsByType()
// → Map { 'knows': 45, 'created': 23, 'located_at': 12 }
```
### Graph Traversal
The index supports multi-hop traversal:
```typescript
// Find all entities within 2 hops
const reachable = await this.graphIndex.traverse({
startId: 'alice',
depth: 2,
direction: 'out'
})
// Complexity: O(V + E) breadth-first search, but each neighbor lookup is O(1)
```
## Shared Memory Management: UnifiedCache
All three main indexes share a single **UnifiedCache** instance for coordinated memory management.
### Architecture
```typescript
class UnifiedCache {
private cache: Map<string, CachedItem> = new Map()
private maxSize: number
private currentSize: number = 0
private evictionPolicy: 'LRU' | 'LFU' = 'LRU'
}
// Each index gets the same cache instance
const unifiedCache = new UnifiedCache({ maxSize: 1000 })
this.metadataIndex = new MetadataIndexManager(storage, { unifiedCache })
this.vectorIndex = new JsHnswVectorIndex(storage, { unifiedCache })
this.graphIndex = new GraphAdjacencyIndex(storage, { unifiedCache })
```
### Benefits
1. **Fair Resource Allocation**: All indexes compete for the same memory pool
2. **Prevents Monopolization**: No single index can starve others of memory
3. **Coordinated Eviction**: LRU eviction across all cached items system-wide
4. **Memory Pressure Handling**: Automatic cache shrinking when memory is tight
5. **Adaptive Loading**: Indexes load data transiently under memory pressure
### Cache Key Patterns
Each index uses different key prefixes:
```typescript
// Metadata index
cache.set(`meta:${field}:${value}`, indexEntry)
// Vector index
cache.set(`vector:${id}`, vectorData)
// Graph index
cache.set(`graph:${sourceId}`, neighbors)
// Deleted items (no caching needed - uses Set)
```
## How Indexes Work Together
### 1. Entity Creation (`brainy.add()`)
```typescript
// src/brainy.ts:add()
async add(params: AddParams): Promise<string> {
const id = generateId()
const vector = await this.embedder(params.content)
// Add to metadata index (field filtering)
await this.metadataIndex.addToIndex(id, params.metadata)
// Add to vector index (vector search)
await this.index.addEntity(id, vector, params.noun)
// Relationships added via separate relate() calls
return id
}
```
### 2. Entity Search (`brainy.find()`)
```typescript
// src/brainy.ts:find()
async find(query: FindQuery): Promise<Result[]> {
let results: Result[] = []
// Step 1: Metadata filtering (fast pre-filter)
if (query.where) {
const filteredIds = await this.metadataIndex.getIdsForFilter(query.where)
results = await this.getEntitiesByIds(filteredIds)
}
// Step 2: Vector similarity search (semantic ranking)
if (query.like) {
const queryVector = await this.embedder(query.like)
const vectorResults = await this.index.search(queryVector, query.limit)
// Intersect or union with metadata results
results = this.combineResults(results, vectorResults)
}
// Step 3: Graph traversal (relationship filtering)
if (query.connected) {
const connectedIds = await this.graphIndex.traverse(query.connected)
results = results.filter(r => connectedIds.includes(r.id))
}
return results
}
```
### 3. Entity Update (`brainy.update()`)
```typescript
// src/brainy.ts:update()
async update(params: UpdateParams): Promise<void> {
const existing = await this.get(params.id)
// Update metadata index (remove old, add new)
await this.metadataIndex.removeFromIndex(params.id, existing.metadata)
await this.metadataIndex.addToIndex(params.id, params.metadata)
// Update vector index (re-embed if content changed)
if (params.content) {
const newVector = await this.embedder(params.content)
await this.index.updateEntity(params.id, newVector)
}
// Graph relationships unchanged (managed separately)
}
```
### 4. Statistics (`brainy.stats()`)
All indexes provide O(1) statistics:
```typescript
// src/brainy.ts:stats()
async stats(): Promise<Statistics> {
return {
// From metadata index
entities: this.metadataIndex.getTotalEntityCount(),
entityTypes: this.metadataIndex.getAllEntityCounts(),
// From graph index
relationships: this.graphIndex.getTotalRelationshipCount(),
relationshipTypes: this.graphIndex.getRelationshipCountsByType(),
// From vector index
vectorIndexSize: this.index.getSize()
}
}
```
### 5. Index Rebuilding (Lazy Loading Support)
**Two modes of index loading:**
#### Mode 1: Auto-Rebuild on init() (default)
```typescript
// src/brainy.ts:init()
async init(): Promise<void> {
// When disableAutoRebuild: false (default)
const metadataStats = await this.metadataIndex.getStats()
const vectorIndexSize = this.index.size()
const graphIndexSize = await this.graphIndex.size()
if (metadataStats.totalEntries === 0 ||
vectorIndexSize === 0 ||
graphIndexSize === 0) {
// Rebuild all indexes in parallel
await Promise.all([
metadataStats.totalEntries === 0 ? this.metadataIndex.rebuild() : Promise.resolve(),
vectorIndexSize === 0 ? this.index.rebuild() : Promise.resolve(),
graphIndexSize === 0 ? this.graphIndex.rebuild() : Promise.resolve()
])
}
}
```
#### Mode 2: Lazy Loading on First Query
```typescript
// When disableAutoRebuild: true
const brain = new Brainy({
storage: { type: 'filesystem' },
disableAutoRebuild: true // Enable lazy loading
})
await brain.init() // Returns instantly, indexes empty
// First query triggers lazy rebuild
const results = await brain.find({ limit: 10 })
// → Calls ensureIndexesLoaded() (line 4617)
// → Rebuilds all 3 main indexes with concurrency control
// → Subsequent queries are instant (0ms check)
```
**Performance:**
- First query with lazy loading: ~50-200ms rebuild (1K-10K entities)
- Concurrent queries: Wait for same rebuild (mutex prevents duplicates)
- Subsequent queries: 0ms check (instant)
See [initialization-and-rebuild.md](./initialization-and-rebuild.md) for detailed lazy loading implementation.
## Triple Intelligence Integration
The **TripleIntelligenceSystem** (`src/triple/TripleIntelligenceSystem.ts`) combines all three core indexes:
```typescript
class TripleIntelligenceSystem {
constructor(
private metadataIndex: MetadataIndexManager,
private vectorIndex: VectorIndexProvider,
private graphIndex: GraphAdjacencyIndex,
private embedder: EmbedderFunction,
private storage: BaseStorage
) {}
async query(nlpQuery: string): Promise<Result[]> {
// Parse natural language
const parsed = await this.parseQuery(nlpQuery)
// Execute across all three indexes
const [metadataResults, vectorResults, graphResults] = await Promise.all([
this.metadataIndex.getIdsForFilter(parsed.filters),
this.vectorIndex.search(parsed.vector, parsed.limit),
this.graphIndex.traverse(parsed.graphConstraints)
])
// Fuse results with weighted scoring
return this.fuseResults(metadataResults, vectorResults, graphResults)
}
}
```
## Performance Characteristics
### Operation Complexity by Index
| Operation | MetadataIndexManager | TypeAwareVectorIndex | GraphAdjacencyIndex |
|-----------|---------------------|-------------------|---------------------|
| **Add** | O(1) per field | O(log n) | O(1) |
| **Remove** | O(1) per field | O(log n) | O(1) |
| **Exact lookup** | O(1) | N/A | O(1) |
| **Range query** | O(log n) + O(k) | N/A | N/A |
| **Similarity search** | N/A | O(log n) | N/A |
| **Neighbor lookup** | N/A | N/A | O(1) |
| **Statistics** | O(1) | O(1) | O(1) |
| **Rebuild** | O(n) | O(n) | O(n) |
Where:
- n = total number of entities
- k = number of matching results
**Note**: All 3 main indexes have rebuild() methods that load persisted data (O(n)) rather than recomputing (which would be O(n log n) for the vector index).
### Memory Footprint
| Index | Per-Entity Memory | Notes |
|-------|-------------------|-------|
| **MetadataIndexManager** | ~100 bytes | Depends on field count and cardinality (RoaringBitmap32 compression) |
| **TypeAwareVectorIndex** | ~1.5 KB | Vector (384 dims × 4 bytes) + graph connections across 42 type-specific indexes |
| **GraphAdjacencyIndex** | ~50 bytes per relationship | Bidirectional verb-id references in 2 LSM-trees |
**Total overhead**: ~1.6 KB per entity + ~50 bytes per relationship
**Sub-index memory:**
- ChunkManager: ~20 bytes per chunk descriptor
- EntityIdMapper: ~32 bytes per UUID mapping (50-90% savings vs Set\<string\>)
- LSM-trees: ~200 bytes per relationship (SSTable storage)
### Scalability
All indexes scale gracefully. The cost of each stage is governed by its algorithmic complexity, not a fixed millisecond figure — absolute latency depends on hardware, embedding model, and storage backend. Only the graph adjacency index carries a committed scale assertion:
| Query stage | Complexity | Scaling behavior |
|-------------|------------|------------------|
| Metadata filter (exact) | O(1) | Constant — independent of dataset size |
| Metadata filter (range) | O(log n) + O(k) | Sub-linear; k = matching results |
| Vector search (HNSW) | O(log n) | Degrades gracefully via hierarchical layers |
| Graph hop | O(1) | Measured <1 ms per neighbor lookup, validated up to 1M relationships (`tests/performance/graph-scale-performance.test.ts:238`) |
| Combined query | O(log n) | Bounded by the vector stage; metadata and graph stages stay O(1)/O(log n) |
**Key observations**:
- Graph queries stay O(1) regardless of scale
- Metadata filtering scales sub-linearly
- Vector search degrades gracefully due to the hierarchical index
- Combined queries remain fast even at scale
## Best Practices
### When to Use Each Index
**MetadataIndex**:
- Filtering by exact field values (status, type, category)
- Range queries on numeric/temporal fields (dates, prices, counts)
- Field discovery (what filters are available)
- Type-based querying (find all characters, all items)
**Vector Index**:
- Semantic similarity search ("find similar documents")
- Content-based retrieval ("find posts about AI")
- Fuzzy matching (when exact matches aren't required)
- Recommendation systems (find related items)
**GraphAdjacencyIndex**:
- Relationship queries ("who knows whom")
- Path finding ("how are these entities connected")
- Network analysis ("find communities")
- Multi-hop traversal ("friends of friends")
**Note**: Soft-delete functionality is not currently integrated. Brainy uses hard deletes via storage layer.
### Query Optimization
1. **Start with metadata filters** - They're fastest and most selective
2. **Use graph constraints** - O(1) lookups significantly reduce search space
3. **Vector search last** - Most expensive, best used on pre-filtered set
4. **Leverage temporal bucketing** - Timestamp range queries work efficiently
5. **Monitor statistics** - Use O(1) stats methods for cardinality estimation
### Memory Management
1. **Configure UnifiedCache appropriately** - Balance between speed and memory
2. **Use lazy loading** - Vector index loads vectors on-demand
3. **Monitor cache hit rates** - Adjust cache size if hit rate is low
4. **Consider storage adapter** - Memory = fastest, filesystem = persistent
## Related Documentation
- [Find System](../FIND_SYSTEM.md) - Query-centric view of index usage
- [Triple Intelligence](./triple-intelligence.md) - Advanced query system
- [Storage Architecture](./storage-architecture.md) - Storage layer details
- [Performance Guide](../PERFORMANCE.md) - Performance tuning
- [Overview](./overview.md) - High-level architecture
## Summary: Index Hierarchy
### Level 1: Main Indexes (3)
All have rebuild() methods and are covered by lazy loading:
1. **TypeAwareVectorIndex** - `src/hnsw/typeAwareHNSWIndex.ts:403`
2. **MetadataIndexManager** - `src/utils/metadataIndex.ts:2318`
3. **GraphAdjacencyIndex** - `src/graph/graphAdjacencyIndex.ts:389`
### Level 2: Sub-Indexes (~50+)
Automatically managed by parent rebuild():
- **42 type-specific vector indexes** (one per NounType)
- **6 metadata components** (ChunkManager, EntityIdMapper, FieldTypeInference, Field Sparse Indexes, Sorted Indexes)
- **2 LSM-trees** (lsmTreeVerbsBySource, lsmTreeVerbsByTarget — the verb set is the single adjacency source of truth; neighbor reads derive from live verbs so removals are honored)
- **In-memory graph structures** (sourceIndex, targetIndex, verbIndex)
### Lazy Loading
- **Mode 1**: Auto-rebuild on init() (default)
- **Mode 2**: Lazy rebuild on first query (when `disableAutoRebuild: true`)
- **Concurrency-safe**: Mutex prevents duplicate rebuilds
- **Performance**: First query ~50-200ms, subsequent queries instant
### Total Functional Index Count
- **3 main indexes** with independent rebuild() methods
- **~50+ sub-components** managed automatically
- **All covered** by rebuildIndexesIfNeeded() or built-in lazy initialization
## Version History
- **v5.7.7** (November 2025): Added production-scale lazy loading with concurrency control. Fixed critical bug where `disableAutoRebuild: true` left indexes empty forever. Added `ensureIndexesLoaded()` helper and `getIndexStatus()` diagnostic.
- **v3.43.0** (October 2025): Migrated from `roaring` (native C++) to `roaring-wasm` (WebAssembly) for universal compatibility. No API changes - maintains identical RoaringBitmap32 interface. Benefits: works in all environments (Node.js, browsers, serverless) without build tools, zero compilation errors, simpler developer experience. 90% memory savings and hardware-accelerated operations unchanged.
- **v3.42.0** (October 2025): Replaced flat file indexing with adaptive chunked sparse indexing. Bloom filters + zone maps for O(1) exact match and O(log n) range queries. 630x file reduction (560k → 89 files). Removed dual code paths.
- **v3.41.0** (October 2025): Added automatic temporal bucketing to MetadataIndex
- **v3.40.0** (October 2025): Enhanced batch processing for imports
- **v3.0.0** (September 2025): Introduced 3-tier index architecture with UnifiedCache

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# Initialization and Rebuild Processes
This document explains how Brainy's four indexes (MetadataIndex, vector index, GraphAdjacencyIndex, DeletedItemsIndex) initialize and rebuild from persisted storage.
## Core Principle: All Indexes Are Disk-Based
**KEY INSIGHT**: All indexes in Brainy are already disk-based. There is no need for snapshots or separate backup mechanisms. Initialization simply loads the right amount of data from storage into memory based on available resources.
### What Gets Persisted
| Index | Persisted Data | Storage Method | Since Version |
|-------|---------------|----------------|---------------|
| **MetadataIndex** | Field registry + chunked sparse indices with bloom filters + zone maps | `storage.saveMetadata()` | v3.42.0 (chunks), v4.2.1 (registry) |
| **Vector Index** | Vector embeddings + graph connections | `storage.saveHNSWData()` + `storage.saveHNSWSystem()` | v3.35.0 |
| **GraphAdjacencyIndex** | Relationships via LSM-tree SSTables | LSM-tree auto-persistence | v3.44.0 |
| **DeletedItemsIndex** | Set of deleted IDs | `storage.saveDeletedItems()` | v3.0.0 |
#### MetadataIndex Persistence Details
The MetadataIndex now persists two components:
1. **Field Registry** (`__metadata_field_registry__`): Directory of indexed fields for O(1) discovery
- Size: ~4-8KB (50-200 fields typical)
- Enables instant cold starts by discovering persisted indices
- Auto-saved during every flush operation
2. **Sparse Indices** (`__sparse_index__<field>`): Per-field index directories
- Contains chunk metadata, zone maps, and bloom filters
- Lazy-loaded via UnifiedCache on first query
3. **Chunks** (`__metadata_chunk__<field>_<chunkId>`): Actual inverted index data
- Roaring bitmaps for compressed entity ID storage
- Loaded on-demand based on query patterns
All storage operations use the **StorageAdapter** interface, which works with FileSystem and Memory backends.
## Initialization Process
### 1. Lazy Initialization Pattern
All indexes use lazy initialization - they don't load data until first use:
```typescript
// Example: GraphAdjacencyIndex
class GraphAdjacencyIndex {
private initialized = false
private async ensureInitialized(): Promise<void> {
if (this.initialized) return
// Initialize LSM-trees from storage
await this.lsmTreeSource.init()
await this.lsmTreeTarget.init()
this.initialized = true
}
// Every public method calls ensureInitialized() first
async getNeighbors(id: string): Promise<string[]> {
await this.ensureInitialized() // Lazy init!
// ... actual logic
}
}
```
**Benefits**:
- Zero-cost abstraction: No initialization overhead if index not used
- Faster startup: Indexes initialize in parallel on first use
- Lower memory: Only used indexes consume memory
### 2. Brain Initialization Flow
When you create a `Brain` instance and call `init()`, behavior depends on the `disableAutoRebuild` configuration:
#### Mode 1: Auto-Rebuild on init() (Default)
```typescript
// src/brainy.ts (lines 192-237)
async init(): Promise<void> {
const initStartTime = Date.now()
// STEP 1: Initialize storage and unified cache
await this.storage.init()
// STEP 2: Check index sizes (lazy initialization triggers here)
const metadataStats = await this.metadataIndex.getStats()
const vectorIndexSize = this.index.size()
const graphIndexSize = await this.graphIndex.size()
// STEP 3: Rebuild empty indexes from storage in parallel
if (metadataStats.totalEntries === 0 ||
vectorIndexSize === 0 ||
graphIndexSize === 0) {
const rebuildStartTime = Date.now()
await Promise.all([
metadataStats.totalEntries === 0
? this.metadataIndex.rebuild()
: Promise.resolve(),
vectorIndexSize === 0
? this.index.rebuild()
: Promise.resolve(),
graphIndexSize === 0
? this.graphIndex.rebuild()
: Promise.resolve()
])
const rebuildDuration = Date.now() - rebuildStartTime
console.log(`✅ All indexes rebuilt in ${rebuildDuration}ms`)
}
// STEP 4: Log statistics
const stats = await this.stats()
console.log(`📊 Brain initialized with ${stats.entities} entities`)
}
```
**Timeline** (typical cold start with 10K entities):
- 0-50ms: Storage adapter initialization
- 50-100ms: Field registry loading (O(1) discovery of persisted indices)
- 100-200ms: Index lazy initialization (LSM-tree loading)
- 200-500ms: Cache warming (preload common fields)
- **No rebuild needed!** Registry discovers existing indices
- Total: ~0.5-1 second (instant cold starts)
**Timeline** (cold start WITHOUT field registry - first run only):
- 0-50ms: Storage adapter initialization
- 50-100ms: Index lazy initialization
- 100-2000ms: One-time rebuild to create indices
- Total: ~1-3 seconds (one time only)
#### Mode 2: Lazy Loading on First Query
When `disableAutoRebuild: true`, indexes remain empty after init() and rebuild on first query:
```typescript
// User code
const brain = new Brainy({
storage: { type: 'filesystem' },
disableAutoRebuild: true // Enable lazy loading
})
await brain.init() // Returns instantly (0-10ms)
// First query triggers lazy rebuild
const results = await brain.find({ limit: 10 })
// → Calls ensureIndexesLoaded() internally (brainy.ts:4617)
// → Rebuilds all 3 main indexes with concurrency control
// → Returns results (~50-200ms total for 1K-10K entities)
// Subsequent queries are instant
const more = await brain.find({ limit: 100 }) // 0ms check, instant
```
**ensureIndexesLoaded() Implementation** (brainy.ts:4617-4664):
```typescript
private async ensureIndexesLoaded(): Promise<void> {
// Fast path: Already loaded
if (this.lazyRebuildCompleted) {
return // 0ms
}
// Concurrency control: Wait for in-progress rebuild
if (this.lazyRebuildInProgress && this.lazyRebuildPromise) {
await this.lazyRebuildPromise // Wait for same rebuild
return
}
// Check if storage has data
const entities = await this.storage.getNouns({ pagination: { limit: 1 } })
const hasData = (entities.totalCount && entities.totalCount > 0) || entities.items.length > 0
if (!hasData) {
this.lazyRebuildCompleted = true
return
}
// Start lazy rebuild with mutex
this.lazyRebuildInProgress = true
this.lazyRebuildPromise = this.rebuildIndexesIfNeeded(true)
.then(() => {
this.lazyRebuildCompleted = true
})
.finally(() => {
this.lazyRebuildInProgress = false
this.lazyRebuildPromise = null
})
await this.lazyRebuildPromise
}
```
**Lazy Loading Performance:**
- First query: ~50-200ms (1K-10K entities) - triggers rebuild
- Concurrent queries: Wait for same rebuild (mutex prevents duplicates)
- Subsequent queries: 0ms check (instant)
- Zero-config: Works automatically, no code changes needed
**Use Cases for Lazy Loading:**
- **Serverless/Edge**: Minimize cold start time, indexes load on demand
- **Development**: Faster restarts during development
- **Large datasets**: Defer index loading until actually needed
- **Read-heavy workloads**: Write operations don't wait for index rebuild
## Rebuild Process
### What "Rebuild" Actually Means
**IMPORTANT**: "Rebuild" does NOT mean recomputing data. It means:
1. **Load persisted data** from storage (vector index connections, metadata chunks, LSM-tree SSTables)
2. **Populate in-memory structures** (Maps, Sets, graphs)
3. **Apply adaptive caching** (preload vectors if small dataset, lazy load if large)
**Complexity**: O(N) - linear scan through storage, NOT O(N log N) recomputation!
### 1. Vector Index Rebuild (Correct Pattern)
```typescript
// src/hnsw/hnswIndex.ts (lines 809-947)
public async rebuild(options: {
lazy?: boolean
batchSize?: number
onProgress?: (loaded: number, total: number) => void
} = {}): Promise<void> {
// STEP 1: Clear in-memory structures
this.clear()
// STEP 2: Load system data (entry point, max level)
const systemData = await this.storage.getHNSWSystem()
this.entryPointId = systemData.entryPointId
this.maxLevel = systemData.maxLevel
// STEP 3: Determine preloading strategy (adaptive caching)
const totalNouns = await this.storage.getNounCount()
const vectorMemory = totalNouns * 384 * 4 // 384 dims × 4 bytes
const availableCache = this.unifiedCache.getRemainingCapacity()
const shouldPreload = vectorMemory < availableCache * 0.3
// STEP 4: Load entities with persisted vector index connections
let hasMore = true
let cursor: string | undefined = undefined
while (hasMore) {
const result = await this.storage.getNouns({
pagination: { limit: 1000, cursor }
})
for (const nounData of result.items) {
// Load vector graph data from storage (NOT recomputed!)
const hnswData = await this.storage.getHNSWData(nounData.id)
// Create noun with restored connections
const noun: HNSWNoun = {
id: nounData.id,
vector: shouldPreload ? nounData.vector : [], // Adaptive!
connections: new Map(),
level: hnswData.level
}
// Restore connections from persisted data
for (const [levelStr, nounIds] of Object.entries(hnswData.connections)) {
const level = parseInt(levelStr, 10)
noun.connections.set(level, new Set<string>(nounIds))
}
// Just add to memory (no recomputation!)
this.nouns.set(nounData.id, noun)
}
hasMore = result.hasMore
cursor = result.nextCursor
}
}
```
**Key Points**:
- ✅ Loads vector index connections from storage via `getHNSWData()`
- ✅ Uses adaptive caching (preload vectors if < 30% of available cache)
- ✅ O(N) complexity - just loads existing data
- ❌ Does NOT call `addItem()` which would recompute connections (O(N log N))
### 2. TypeAwareVectorIndex Rebuild (Fixed in v3.45.0)
**Critical Architectural Fix**: The type-aware vector index previously had TWO major bugs:
1. **Bug #1**: Called `addItem()` during rebuild → O(N log N) recomputation instead of O(N) loading
2. **Bug #2**: Loaded ALL nouns 31 times in parallel (once per type) → O(31*N) complexity causing timeouts
Both were fixed in v3.45.0 by loading ALL nouns ONCE and routing to correct type indexes:
```typescript
// src/hnsw/typeAwareHNSWIndex.ts (lines 379-571)
public async rebuild(options?: {
lazy?: boolean
batchSize?: number
onProgress?: (loaded: number, total: number) => void
}): Promise<void> {
// STEP 1: Clear all type-specific indexes
for (const index of this.typeIndexes.values()) {
index.clear()
}
// STEP 2: Determine preloading strategy (same as vector index)
const totalNouns = await this.storage.getNounCount()
const vectorMemory = totalNouns * 384 * 4
const availableCache = this.unifiedCache.getRemainingCapacity()
const shouldPreload = vectorMemory < availableCache * 0.3
// STEP 3: Load entities grouped by type
for (const nounType of ALL_NOUN_TYPES) {
const index = this.getOrCreateIndex(nounType)
let hasMore = true
let cursor: string | undefined = undefined
while (hasMore) {
const result = await this.storage.getNouns({
type: nounType,
pagination: { limit: 1000, cursor }
})
for (const nounData of result.items) {
// CORRECT: Load persisted vector index data (not recomputed!)
const hnswData = await this.storage.getHNSWData(nounData.id)
const noun = {
id: nounData.id,
vector: shouldPreload ? nounData.vector : [],
connections: new Map(),
level: hnswData.level
}
// Restore connections from storage
for (const [levelStr, nounIds] of Object.entries(hnswData.connections)) {
const level = parseInt(levelStr, 10)
noun.connections.set(level, new Set<string>(nounIds))
}
// Add to in-memory index (no recomputation!)
index.nouns.set(nounData.id, noun)
}
hasMore = result.hasMore
cursor = result.nextCursor
}
}
}
```
**Bug Fix**: Changed from `index.addItem()` (recomputation) to direct `nouns.set()` (restoration).
**Performance Impact**: 200-600x speedup (5 minutes → 500ms for 10K entities)
**Correct Pattern**:
```typescript
// Load ALL nouns ONCE (not 31 times!)
while (hasMore) {
const result = await storage.getNounsWithPagination({ limit: 1000, cursor })
for (const noun of result.items) {
const type = noun.nounType || noun.metadata?.noun
const index = this.getIndexForType(type)
// Load persisted HNSW data
const hnswData = await storage.getHNSWData(noun.id)
// Restore connections (not recompute!)
const restoredNoun = {
id: noun.id,
vector: shouldPreload ? noun.vector : [],
connections: restoreConnections(hnswData),
level: hnswData.level
}
// Add to correct type index
index.nouns.set(noun.id, restoredNoun)
}
cursor = result.nextCursor
hasMore = result.hasMore
}
```
**Performance Improvements**:
- 31x speedup: Load nouns ONCE instead of 31 times (O(N) vs O(31*N))
- 200-600x speedup: Load from storage instead of recomputing (O(N) vs O(N log N))
- **Combined**: ~6000x speedup! (150 minutes → 1.5 seconds for 10K entities)
### 3. MetadataIndex Rebuild (v4.2.1+ with Field Registry)
**v4.2.1 Critical Fix**: Field registry persistence eliminates unnecessary rebuilds!
```typescript
// src/utils/metadataIndex.ts (lines 202-216)
async init(): Promise<void> {
// STEP 1: Load field registry to discover persisted indices
// This is THE KEY FIX - O(1) discovery of existing indices
await this.loadFieldRegistry()
// If registry found, fieldIndexes Map is now populated
// getStats() will return totalEntries > 0 → skips rebuild!
// STEP 2: Initialize EntityIdMapper
await this.idMapper.init()
// STEP 3: Warm cache with discovered fields
await this.warmCache()
}
async loadFieldRegistry(): Promise<void> {
const registry = await this.storage.getMetadata('__metadata_field_registry__')
if (registry?.fields) {
// Populate fieldIndexes Map from discovered fields
// Sparse indices are lazy-loaded when first accessed
for (const field of registry.fields) {
this.fieldIndexes.set(field, {
values: {},
lastUpdated: registry.lastUpdated
})
}
// Result: getStats() now returns totalEntries > 0
// → Brain skips rebuild, cold start in 2-3 seconds!
}
}
```
**Rebuild Only Happens If**:
1. **First run** (no field registry exists yet)
2. **Registry corruption** (rare)
3. **Explicit rebuild request** (manual operation)
```typescript
// Only runs if field registry not found
async rebuild(): Promise<void> {
// STEP 1: Clear in-memory structures
this.fieldIndexes.clear()
// STEP 2: Load all entity metadata and rebuild indices
// Sequential batching (25/batch) to prevent socket exhaustion
// After rebuild: Field registry saved during next flush()
// One-time cost: ~2-3 seconds for 1K entities
}
```
**Performance Comparison**:
| Version | Cold Start | Discovery Method | Rebuild Needed? |
|---------|------------|------------------|-----------------|
| v4.2.0 | 8-9 min | None (always rebuild) | Always |
| v4.2.1 | 2-3 sec | Field registry O(1) | First run only |
**Key Points**:
- ✅ Field registry enables O(1) discovery (4-8KB file)
- ✅ Sparse indices lazy-loaded on first query
- ✅ Bloom filters + zone maps loaded for fast filtering
- ✅ One-time rebuild on first run, then instant restarts forever
- ✅ Automatic: No configuration needed
### 4. GraphAdjacencyIndex Rebuild
```typescript
// src/graph/graphAdjacencyIndex.ts (lines 279-336)
async rebuild(): Promise<void> {
// STEP 1: Clear in-memory caches
this.verbIndex.clear()
this.relationshipCountsByType.clear()
// STEP 2: Load all verbs from storage
let hasMore = true
let cursor: string | undefined = undefined
while (hasMore) {
const result = await this.storage.getVerbs({
pagination: { limit: 1000, cursor }
})
for (const verb of result.items) {
// Add to index (which updates LSM-trees)
await this.addVerb(verb)
}
hasMore = result.hasMore
cursor = result.nextCursor
}
// Note: LSM-trees (lsmTreeSource, lsmTreeTarget) are already
// initialized from persisted SSTables during ensureInitialized()
}
```
**Key Points**:
- ✅ LSM-tree SSTables already loaded during `init()`
- ✅ Rebuild just repopulates verb cache
- ✅ O(E) complexity where E = number of edges
## Adaptive Memory Management
### Strategy: Preload vs Lazy Load
All indexes use the **UnifiedCache** to determine memory allocation:
```typescript
// Decision logic (in all indexes)
const totalDataSize = estimateDataSize()
const availableCache = unifiedCache.getRemainingCapacity()
if (totalDataSize < availableCache * 0.3) {
// PRELOAD: Dataset is small relative to available memory
// Load everything into memory for maximum performance
shouldPreload = true
} else {
// LAZY LOAD: Dataset is large
// Load on-demand with LRU eviction
shouldPreload = false
}
```
**Thresholds**:
- **< 30% of available cache**: Preload all vectors
- **> 30% of available cache**: Lazy load on demand
**Example** (default 100MB cache):
- 10K entities × 1.5KB = 15MB → **Preload** (15MB < 30MB)
- 100K entities × 1.5KB = 150MB → **Lazy load** (150MB > 30MB)
### UnifiedCache Integration
```typescript
// All indexes share the same cache
const unifiedCache = getGlobalCache() // Singleton, 100MB default
// MetadataIndex
this.unifiedCache = unifiedCache
// Vector index
this.unifiedCache = unifiedCache
// GraphAdjacencyIndex
this.unifiedCache = unifiedCache
```
**Benefits**:
- Fair resource allocation across indexes
- Prevents any single index from monopolizing memory
- Coordinated LRU eviction system-wide
## Performance Characteristics
### Rebuild Times (Typical Hardware)
| Dataset Size | Metadata | Vector | Graph | Total (Parallel) |
|--------------|----------|------|-------|------------------|
| 1K entities | 50ms | 100ms | 30ms | **150ms** |
| 10K entities | 200ms | 500ms | 150ms | **600ms** |
| 100K entities | 1s | 3s | 1s | **3.5s** |
| 1M entities | 8s | 25s | 10s | **28s** |
**Note**: Parallel rebuild means total time ≈ max(individual times), not sum.
### Memory Overhead
| Index | In-Memory Overhead | Disk Storage |
|-------|-------------------|--------------|
| **MetadataIndex** | ~100 bytes/entity | ~500 bytes/entity (chunks) |
| **Vector Index** | ~200 bytes/entity (no vectors) | ~1.5 KB/entity (vectors + connections) |
| **GraphAdjacencyIndex** | ~128 bytes/relationship | ~200 bytes/relationship (LSM-tree) |
| **DeletedItemsIndex** | ~40 bytes/deleted ID | ~50 bytes/deleted ID |
**Total overhead** (lazy loading):
- **In-memory**: ~300 bytes per entity + ~128 bytes per relationship
- **On-disk**: ~2 KB per entity + ~200 bytes per relationship
### O(N) vs O(N log N) Comparison
**Before fix** (TypeAwareVectorIndex bug):
```typescript
// BAD: Recomputes vector index connections during rebuild
for (const noun of nouns) {
await index.addItem(noun) // O(log N) per item → O(N log N) total
}
// 10K entities: ~5 minutes
```
**After fix** (correct pattern):
```typescript
// GOOD: Loads connections from storage
for (const noun of nouns) {
const hnswData = await storage.getHNSWData(noun.id) // O(1) per item
noun.connections = restoreConnections(hnswData) // O(1) per item
index.nouns.set(noun.id, noun) // O(1) per item
}
// 10K entities: ~500ms (600x faster!)
```
## Common Patterns
### Cold Start (Empty Storage)
```typescript
const brain = new Brain({ storage })
// First init: All indexes are empty
await brain.init()
// → No rebuild needed, indexes start empty
// Add data
await brain.add({ content: 'Hello', noun: 'message' })
// Second init: Indexes populated
const brain2 = new Brain({ storage })
await brain2.init()
// → Rebuilds all indexes from storage (~1-3s for 10K entities)
```
### Warm Start (Storage Already Populated)
```typescript
const brain = new Brain({ storage })
// Init with existing data
await brain.init()
// → Detects non-empty storage
// → Rebuilds indexes in parallel
// → Uses adaptive caching (preload if small, lazy if large)
```
### Manual Rebuild
```typescript
const brain = new Brain({ storage })
await brain.init()
// Force rebuild (e.g., after data corruption)
await brain.metadataIndex.rebuild()
await brain.index.rebuild()
await brain.graphIndex.rebuild()
```
## Troubleshooting
### Slow Rebuild Times
**Symptom**: Rebuild takes minutes instead of seconds
**Diagnosis**:
```typescript
// Check if rebuild is recomputing instead of loading
console.time('rebuild')
await brain.index.rebuild()
console.timeEnd('rebuild')
// For 10K entities:
// - Expected: 500-800ms (loading from storage)
// - Bug: 5-10 minutes (recomputing vector index connections)
```
**Solution**: Ensure index is loading from storage, not calling `addItem()` during rebuild.
### High Memory Usage
**Symptom**: Memory usage exceeds expectations
**Diagnosis**:
```typescript
// Check if vectors are being preloaded
const stats = brain.index.getStats()
console.log('Preloaded vectors:', stats.preloadedVectors)
// Expected:
// - Small dataset (< 30% cache): Most vectors preloaded
// - Large dataset (> 30% cache): Few vectors preloaded
```
**Solution**: Adjust `UnifiedCache` size or force lazy loading:
```typescript
const brain = new Brain({
storage,
cache: { maxSize: 50 * 1024 * 1024 } // 50MB cache
})
```
### Missing Data After Rebuild
**Symptom**: Entities disappear after restart
**Diagnosis**:
```typescript
// Check storage persistence
const nouns = await storage.getNouns({ pagination: { limit: 10 } })
console.log('Nouns in storage:', nouns.items.length)
// If empty: Storage not persisting
// If populated: Rebuild not loading correctly
```
**Solution**: Verify storage adapter is configured correctly (e.g., FileSystem path exists).
## Related Documentation
- [Index Architecture](./index-architecture.md) - Data structures and operations
- [Storage Architecture](./storage-architecture.md) - Storage layer details
- [Performance Guide](../PERFORMANCE.md) - Performance tuning
- [Scaling Guide](../SCALING.md) - Large dataset optimization
## Version History
- **v5.7.7** (November 2025): Added production-scale lazy loading with `ensureIndexesLoaded()` helper. Fixed critical bug where `disableAutoRebuild: true` left indexes empty forever. Added concurrency control (mutex) to prevent duplicate rebuilds from concurrent queries. Added `getIndexStatus()` diagnostic method. Zero-config operation - works automatically.
- **v3.45.0** (October 2025): Fixed type-aware vector index `rebuild()` to load from storage instead of recomputing. Removed all snapshot code (unnecessary with correct rebuild pattern). 200-600x speedup.
- **v3.44.0** (October 2025): GraphAdjacencyIndex migrated to LSM-tree storage for billion-scale relationships
- **v3.42.0** (October 2025): MetadataIndex migrated to chunked sparse indexing
- **v3.35.0** (August 2025): Vector index connections first persisted to storage
- **v3.0.0** (September 2025): Initial 3-tier index architecture

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# Design note: multi-process storage mixin
**Status:** Proposed (future minor)
**Owner:** Brainy core
**Filed:** 2026-05-15
**Companion:** [`concepts/storage-adapters`](../concepts/storage-adapters.md)
## Context
Brainy 7.21 added seven storage-adapter methods to support multi-process
safety:
```
supportsMultiProcessLocking()
acquireWriterLock(opts)
releaseWriterLock()
readWriterLock()
startFlushRequestWatcher(cb)
stopFlushRequestWatcher()
requestFlushOverFilesystem(timeoutMs)
```
They live on `BaseStorage` as no-op defaults and are overridden on
`FileSystemStorage` with real implementations. Any adapter extending
`FileSystemStorage` (e.g. Cor's `MmapFileSystemStorage`) inherits the
real ones for free.
This works correctly today. The question is whether the methods *belong*
on `BaseStorage`.
## The case for moving them out
`BaseStorage` already mixes several concerns:
- entity / verb CRUD primitives
- generational record hooks (8.0 MVCC)
- type-statistics tracking
- count persistence
- multi-process safety (new)
Adapters that have no notion of multi-process semantics — `MemoryStorage`,
cloud adapters (S3, GCS, R2, Azure, OPFS) — still carry seven inherited
no-ops on their prototype chain. A reader can't tell from the class
declaration whether a given adapter participates in the locking protocol;
it has to call `supportsMultiProcessLocking()` and trust the answer.
A cleaner separation:
```typescript
interface MultiProcessSafeStorage {
supportsMultiProcessLocking(): boolean
acquireWriterLock(opts?: { force?: boolean }): Promise<WriterLockInfo | null>
releaseWriterLock(): Promise<void>
readWriterLock(): Promise<WriterLockInfo | null>
startFlushRequestWatcher(cb: () => Promise<void>): void
stopFlushRequestWatcher(): void
requestFlushOverFilesystem(timeoutMs: number): Promise<boolean>
}
function isMultiProcessSafe(s: BaseStorage): s is BaseStorage & MultiProcessSafeStorage {
return typeof (s as any).supportsMultiProcessLocking === 'function'
&& (s as any).supportsMultiProcessLocking()
}
```
Brainy's call sites become:
```typescript
if (this.config.mode !== 'reader' && isMultiProcessSafe(this.storage)) {
await this.storage.acquireWriterLock({ force: this.config.force })
// ... TypeScript narrows the rest correctly ...
}
```
Benefits:
- Type system enforces the capability — no more `(this.storage as any).X()`.
- Adapters that opt out (memory, cloud) are visibly clean.
- `hasStorageMethod()` defensive helper can stay (still guards
build/install artifacts) but doesn't carry the conceptual weight of
"did the plugin implement the interface."
- ADR-style trail for future capability additions: each new capability
gets its own interface, opted into explicitly.
## The case against doing it now
- Breaking change for any adapter that already overrides these methods.
`FileSystemStorage` is the only one in-tree, but Cor's
`MmapFileSystemStorage` inherits from it — interface relocation would
ripple through the plugin ecosystem.
- The current state works. The real failure modes seen in the field
were build/install artifacts, not type-system failures.
- 7.22.0 just shipped a clean fix. Stacking another refactor before
consumers absorb it adds churn without urgency.
- The `hasStorageMethod()` guard accomplishes the same runtime safety the
interface narrowing would in TypeScript-aware code.
## Recommendation
**Defer.** Keep the current architecture through the 7.x line. Revisit
when:
- A second multi-process capability lands (e.g. distributed-readers
coordination) and the natural surface area is more than seven
methods. Five+ becomes the moment a separate interface earns its
keep.
- A v8 major is on the table for unrelated reasons. Bundle the
interface extraction with that release so consumers absorb both
changes in one upgrade.
Until then:
- Document the inheritance contract (done — see
[`concepts/storage-adapters`](../concepts/storage-adapters.md)).
- Keep `hasStorageMethod()` as the runtime guard.
- Don't add new methods to `BaseStorage` defaults without re-evaluating
the surface-area boundary.
## Migration sketch (when we do it)
For reference, a clean migration path:
1. Add `MultiProcessSafeStorage` interface to `src/storage/coreTypes.ts`.
2. Move the seven method signatures from `BaseStorage` to the new
interface. Default implementations stay on `BaseStorage` but only as
private helpers consumed by `FileSystemStorage`'s explicit
implementations.
3. `FileSystemStorage implements MultiProcessSafeStorage` becomes
explicit; methods get the `public` modifier with full JSDoc.
4. Brainy call sites switch from `hasStorageMethod` to
`isMultiProcessSafe` type-guard. Keep `hasStorageMethod` for
build/install artifact protection.
5. Document the new contract in `concepts/storage-adapters.md`.
6. Major-version-bump the `@soulcraft/brainy` peerDep range expected by
plugins.
Estimated work: ~half a day of code, ~2 hours of doc/example updates,
ecosystem coordination via the platform handoff.

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# Architecture Overview
Brainy is a multi-dimensional AI database that combines vector similarity, graph relationships, and metadata filtering into a unified query system. This document provides a comprehensive overview of the system architecture.
## Core Components
### Brainy (Main Entry Point)
The central orchestrator that manages all subsystems:
- **4-Index Architecture**: MetadataIndex, vector index, GraphAdjacencyIndex, DeletedItemsIndex (see [Index Architecture](./index-architecture.md))
- **Storage System**: FileSystem and Memory adapters
- **Augmentation System**: Extensible plugin architecture
- **Triple Intelligence**: Unified query engine
### Triple Intelligence Engine
Brainy's revolutionary feature that unifies three types of search:
- **Vector Search**: Semantic similarity via the pluggable vector index
- **Graph Traversal**: Relationship-based queries
- **Field Filtering**: Precise metadata filtering with O(1) performance
```typescript
// Single query combining all three intelligence types
const results = await brain.find({
like: "machine learning papers", // Vector similarity
connected: { to: "research-team", depth: 2 }, // Graph traversal
where: { published: { $gte: "2024-01-01" } } // Metadata filtering
})
```
### Storage Architecture
```
brainy-data/
├── _system/ # System management
│ └── statistics.json
├── nouns/ # Entity data storage
│ └── {uuid}.json
├── metadata/ # Metadata and indexing
│ ├── {uuid}.json
│ ├── __entity_registry__.json
│ └── __metadata_index__*.json
├── verbs/ # Relationship storage
└── locks/ # Concurrent access control
```
### Vector Index
Pluggable vector index (`VectorIndexProvider`) for efficient nearest-neighbor search. The default JS implementation, `JsHnswVectorIndex`, uses a hierarchical graph:
- **Performance**: O(log n) search complexity
- **Configurable recall**: `fast` / `balanced` / `accurate` presets trade recall for latency
- **Scalable**: Handles millions of vectors per process
- **Persistent**: Serializable to storage
- **Swappable**: Replace with a native implementation (such as `@soulcraft/cor`) via the plugin system without changing application code
### Metadata Index Manager
High-performance field indexing system:
- **O(1) Lookups**: Inverted index for field→value→IDs mapping
- **Query Support**: equals, anyOf, allOf, range queries
- **Chunked Storage**: Supports massive datasets
- **Auto-indexing**: Automatically maintains indexes on updates
## Performance Characteristics
### Operation Complexity
- **Vector Search**: O(log n) via the vector index
- **Field Filtering**: O(1) via inverted indexes
- **Graph Traversal**: O(V + E) for breadth-first search
- **Add Operation**: O(log n) for index insertion
- **Update Operation**: O(1) for metadata updates
### Memory Usage
- **Base Memory**: ~50MB for core system
- **Per Vector**: ~1KB (384 dimensions × 4 bytes)
- **Index Overhead**: ~20% of vector data
- **Cache Size**: Configurable (default 1000 entries)
### Throughput
- **Writes**: 1000+ ops/second (with batching)
- **Reads**: 10,000+ ops/second
- **Search**: 100+ queries/second (varies by complexity)
## Augmentation System
Brainy's extensible plugin architecture allows for powerful enhancements:
### Core Augmentations
- **Entity Registry**: High-speed deduplication for streaming data
- **Batch Processing**: Optimized bulk operations
- **Request Deduplicator**: Prevents duplicate processing
### Creating Custom Augmentations
```typescript
class CustomAugmentation extends BrainyAugmentation {
async onInit(brain: Brainy): Promise<void> {
// Initialize augmentation
}
async onAdd(item: any, brain: Brainy): Promise<any> {
// Process item before adding
return item
}
}
```
## Caching Strategy
Multi-layered caching for optimal performance:
- **Search Cache**: LRU cache for query results
- **Metadata Cache**: Field index caching
- **Pattern Cache**: NLP pattern matching cache
- **Entity Cache**: In-memory entity registry
## Integration Points
### Key Objects for Extensions
- `brain.index`: Access the vector index
- `brain.metadataIndex`: Access field indexing
- `brain.graphIndex`: Access graph adjacency index
- `brain.storage`: Access storage layer
- `brain.augmentations`: Access augmentation manager
For detailed information about each index, see [Index Architecture](./index-architecture.md).
### Event System
```typescript
brain.on('add', (item) => console.log('Item added:', item))
brain.on('search', (query) => console.log('Search performed:', query))
brain.on('error', (error) => console.error('Error:', error))
```
## Best Practices
### When Adding Features
1. Check if similar functionality exists
2. Consider if it should be an augmentation
3. Use existing indexes and caches
4. Avoid duplicating functionality
5. Follow the established patterns
### Performance Optimization
1. Use batch operations for bulk data
2. Enable appropriate caching
3. Choose the right storage adapter
4. Configure index parameters for your use case
5. Monitor statistics for bottlenecks
## Next Steps
- [Index Architecture](./index-architecture.md) - Deep dive into the 4-index system
- [Storage Architecture](./storage-architecture.md) - Deep dive into storage system
- [Triple Intelligence](./triple-intelligence.md) - Advanced query system
- [API Reference](../api/README.md) - Complete API documentation

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# Storage Architecture
> **Updated**: Metadata/vector separation, UUID-based sharding, on-disk artifact for operator-layer backup
## Storage Structure
### Architecture: Metadata/Vector Separation
Entities and relationships are split into **2 separate files** for optimal performance at billion-entity scale:
```
brainy-data/
├── _system/ # System metadata (not sharded)
│ ├── statistics.json # Performance metrics
│ ├── __metadata_field_index__*.json # Field indexes
│ └── __metadata_sorted_index__*.json # Sorted indexes
├── entities/
│ ├── nouns/
│ │ ├── vectors/ # Vector graph data (sharded by UUID)
│ │ │ ├── 00/ # Shard 00 (first 2 hex digits)
│ │ │ │ ├── 00123456-....json # Vector + graph connections
│ │ │ │ └── 00abcdef-....json
│ │ │ ├── 01/ ... ff/ # 256 shards total
│ │ │
│ │ └── metadata/ # Business data (sharded by UUID)
│ │ ├── 00/
│ │ │ ├── 00123456-....json # Entity metadata only
│ │ │ └── 00abcdef-....json
│ │ ├── 01/ ... ff/
│ │
│ └── verbs/
│ ├── vectors/ # Relationship vectors (sharded)
│ │ ├── 00/ ... ff/
│ │
│ └── metadata/ # Relationship data (sharded)
│ ├── 00/ ... ff/
```
### Why Split Metadata and Vectors?
**Performance at scale:**
- **Vector search operations**: Only load vectors (4KB) during search, not metadata (2-10KB)
- **Filtering**: Only load metadata during filtering, not vectors
- **Pagination**: Load metadata IDs first, fetch vectors/metadata on-demand
- **Result**: 60-70% reduction in I/O for typical queries at million-entity scale
### UUID-Based Sharding (256 Shards)
**How it works:**
```typescript
const uuid = "3fa85f64-5717-4562-b3fc-2c963f66afa6"
const shard = uuid.substring(0, 2) // "3f"
// Vector path: entities/nouns/vectors/3f/3fa85f64-....json
// Metadata path: entities/nouns/metadata/3f/3fa85f64-....json
```
**Benefits:**
- **Uniform distribution**: ~3,900 entities per shard (at 1M scale)
- **Filesystem optimization**: avoids huge flat directories that bog down `readdir`
- **Parallel operations**: walk 256 shards in parallel
- **Predictable**: Deterministic shard assignment
## Storage Adapters
Brainy 8.0 ships two adapters, both implementing the same `StorageAdapter` interface:
### FileSystem Storage (Node.js, default)
```typescript
const brain = new Brainy({
storage: {
type: 'filesystem',
path: './data'
}
})
```
- **Use case**: Server applications, CLI tools, single-node deployments
- **Performance**: Direct file I/O
- **Persistence**: Permanent on disk
- **Features**:
- **Batch Delete**: Efficient bulk deletion with retries
- **UUID Sharding**: Automatic 256-shard distribution
### Memory Storage
```typescript
const brain = new Brainy({
storage: {
type: 'memory'
}
})
```
- **Use case**: Tests, ephemeral workloads, single-process caches
- **Performance**: No I/O — all data lives in process memory
- **Persistence**: None — data is lost when the process exits
### Auto
```typescript
const brain = new Brainy({
storage: {
type: 'auto',
path: './data'
}
})
```
`'auto'` picks `'filesystem'` when running on Node.js with a writable `path`, and falls back to `'memory'` otherwise.
## Backup and Off-Site Replication
Brainy 8.0 does not embed cloud SDKs. The on-disk artifact at `path` is a plain directory tree of JSON files, so backup is an operator-layer concern. Typical patterns:
- `gsutil rsync -r ./data gs://my-bucket/brainy-data`
- `aws s3 sync ./data s3://my-bucket/brainy-data`
- `rclone sync ./data remote:brainy-data`
- Periodic `tar` snapshots to any object store
Run these from your scheduler (cron, systemd timer, k8s CronJob) — Brainy itself only reads and writes the local directory.
## Metadata Indexing System
### Field Discovery Index
Tracks all unique values for each field:
```json
// __metadata_field_index__field_category.json
{
"values": {
"technology": 45,
"science": 32,
"business": 28
},
"lastUpdated": 1699564234567
}
```
### Value-Based Indexes
Maps field+value combinations to entity IDs:
```json
// __metadata_index__category_technology_chunk0.json
{
"field": "category",
"value": "technology",
"ids": ["uuid1", "uuid2", "uuid3", ...],
"chunk": 0,
"total": 45
}
```
### Index Chunking
Large indexes automatically chunk for performance:
- **Chunk size**: 10,000 IDs per chunk
- **Auto-splitting**: Transparent to queries
- **Parallel loading**: Chunks load on demand
## Entity Registry
High-performance deduplication system for streaming data:
### Registry Structure
```json
// __entity_registry__.json
{
"mappings": {
"did:plc:alice123": "550e8400-e29b-41d4-a716-446655440000",
"handle:alice.bsky.social": "550e8400-e29b-41d4-a716-446655440000"
},
"stats": {
"totalMappings": 10000,
"lastSync": 1699564234567
}
}
```
### Performance Characteristics
- **Lookup**: O(1) in-memory hash map
- **Persistence**: Configurable (memory/storage/hybrid)
- **Cache**: LRU with configurable TTL
- **Sync**: Periodic or on-demand
## Durability
Brainy persists writes to disk through the filesystem adapter. Each save is a rename-based atomic write of a JSON file under the appropriate shard. Operators that need point-in-time recovery should snapshot `path` (see [Backup and Off-Site Replication](#backup-and-off-site-replication)).
## Storage Optimization
### 1. Batch Operations
```typescript
// Efficient batch delete
await storage.batchDelete([
'entities/nouns/vectors/00/00123456-....json',
'entities/nouns/metadata/00/00123456-....json'
// ...
])
// Batch writes for performance
await brain.addBatch([
{ content: "item1", metadata: {} },
{ content: "item2", metadata: {} },
{ content: "item3", metadata: {} }
])
// Single transaction, optimized I/O
```
### 2. Caching Strategy
```typescript
// Configure caching
const brain = new Brainy({
storage: {
type: 'filesystem',
path: './data',
cache: {
enabled: true,
maxSize: 1000, // Maximum cached items
ttl: 300000, // 5 minutes
strategy: 'lru' // Least recently used
}
}
})
```
## Concurrent Access
### Locking Mechanism
```typescript
// Automatic locking for write operations
await brain.storage.withLock('resource-id', async () => {
// Exclusive access to resource
await brain.storage.saveNoun(id, data)
})
```
### Read-Write Separation
- **Reads**: Non-blocking, parallel
- **Writes**: Serialized with locks
- **Hybrid**: Read-heavy optimization
## Migration and Backup
Backup and restore go through the Db API — see
[Snapshots & Time Travel](../guides/snapshots-and-time-travel.md) for the full
recipe book.
### Snapshot (backup)
```typescript
// Instant, self-contained snapshot (hard links on filesystem storage)
const db = brain.now()
await db.persist('/backups/2026-06-11')
await db.release()
```
### Restore
```typescript
// Replace the store's entire state from a snapshot (destructive — confirm required)
await brain.restore('/backups/2026-06-11', { confirm: true })
```
### Move to a new directory
```typescript
// A snapshot directory is a complete store: restore it into a fresh brain
const brain = new Brainy({ storage: { type: 'filesystem', path: './new' } })
await brain.init()
await brain.restore('/backups/2026-06-11', { confirm: true })
```
## Performance Tuning
### FileSystem Optimizations
- **Directory sharding**: 256 shards spread files across subdirectories
- **Async I/O**: Non-blocking file operations
- **Buffer pooling**: Reuse buffers for efficiency
### Monitoring
```typescript
// Get storage statistics
const stats = await brain.storage.getStatistics()
console.log(stats)
// {
// totalSize: 1048576,
// entityCount: 1000,
// indexSize: 204800,
// walSize: 10240,
// cacheHitRate: 0.85
// }
```
## Best Practices
### Choose the Right Adapter
1. **Development & tests**: `memory` for speed, `filesystem` when you need persistence
2. **Single-process production**: `filesystem` with off-site backup via `gsutil` / `aws s3 sync` / `rclone`
3. **Horizontal scaling**: Brainy runs in one process — there is no built-in cluster. Run independent instances behind a service layer and replicate the on-disk artifact with your operator tooling; or run many reader processes against one shared store with a single writer
### Optimize for Your Use Case
1. **Read-heavy**: Enable caching and let the OS page cache do its job
2. **Write-heavy**: Batch operations and tune the cache `maxSize`
3. **Real-time**: FileSystem with periodic snapshots
4. **Archival**: Snapshot `path` to cold object storage on a schedule
5. **Large-scale**: Rely on metadata/vector separation + UUID sharding
### Monitor and Maintain
1. Regular statistics collection
2. Watch disk usage and shard balance
3. Index optimization
4. Cache tuning based on hit rates
5. Verify backup runs (test restore quarterly)
## API Reference
See the [Storage API](../api/storage.md) for complete method documentation.
---
**Last Updated**: 2026
**Key Features**: Metadata/vector separation, UUID sharding, filesystem-and-memory adapters, operator-layer backup

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---
title: Triple Intelligence
slug: concepts/triple-intelligence
public: true
category: concepts
template: concept
order: 1
description: Unified vector similarity, graph traversal, and metadata filtering in one query. Auto-optimizes between parallel execution and progressive filtering.
next:
- concepts/noun-types
- api/reference
---
# Triple Intelligence System
The Triple Intelligence System is Brainy's revolutionary query engine that unifies vector similarity, graph relationships, and metadata filtering into a single, optimized query interface.
## Overview
Traditional databases force you to choose between vector search, graph traversal, OR metadata filtering. Brainy combines all three intelligences into one magical API that automatically optimizes execution for maximum performance.
## Query Interface
### Unified Query Structure
`find()` accepts a single `FindParams` object (or a natural-language string). One
object combines all three intelligences:
```typescript
interface FindParams {
// Vector intelligence — semantic similarity
query?: string // Natural-language / semantic query (embedded, matched via HNSW + text index)
vector?: number[] // Pre-computed embedding for direct vector search
// Metadata intelligence — structured field filters
type?: NounType | NounType[] // Filter by entity type
subtype?: string | string[] // Filter by per-product subtype
where?: Record<string, any> // Field predicates with bare operators (gte, lt, in, contains, exists…)
// Graph intelligence — relationship traversal
connected?: {
to?: string // Reachable to this entity
from?: string // Reachable from this entity
via?: VerbType | VerbType[] // Relationship type(s) to traverse (alias: type)
depth?: number // Max traversal depth (default: 1)
direction?: 'in' | 'out' | 'both'
}
// Proximity — nearest neighbours of a known entity
near?: { id: string; threshold?: number }
// Control
limit?: number // Max results (default: 10)
offset?: number // Skip N results
orderBy?: string // Field to sort by (e.g. 'createdAt')
order?: 'asc' | 'desc' // Sort direction
}
```
### Example Queries
#### Natural Language Queries with find()
```typescript
// Brainy understands natural language and extracts intent
const results = await brain.find("research papers about neural networks from 2023")
// Automatically interprets: document type, topic, time range
// Complex temporal and numeric queries
const reports = await brain.find("quarterly reports from Q3 2024 with revenue over 10M")
// Automatically extracts: report type, date range, numeric filters
// Multi-condition natural language
const articles = await brain.find("verified articles by John Smith about machine learning published this year")
// Automatically identifies: author, topic, verification status, time range
```
#### Simple Vector Search
```typescript
const results = await brain.find("machine learning concepts")
```
#### Combined Intelligence Query
```typescript
const results = await brain.find({
query: "neural networks",
where: {
category: "research",
year: { gte: 2023 }
},
connected: {
to: "deep-learning-team",
depth: 2
},
limit: 20
})
```
## Query Optimization
### Automatic Plan Generation
The Triple Intelligence engine analyzes each query to create an optimal execution plan:
1. **Selectivity Analysis**: Identifies the most selective filters
2. **Cost Estimation**: Estimates computational cost for each operation
3. **Strategy Selection**: Chooses between parallel or progressive execution
4. **Plan Caching**: Caches successful plans for similar queries
### Execution Strategies
#### Parallel Execution
All three search types execute simultaneously:
- **Best for**: Balanced queries with multiple signals
- **Performance**: Maximum speed through parallelization
- **Use case**: Complex queries needing all intelligence types
```typescript
// Parallel execution for balanced query
const results = await brain.find({
query: "AI research", // ~1000 potential matches
where: { kind: "paper" }, // ~500 potential matches
connected: { to: "stanford" } // ~200 potential matches
})
// All three execute in parallel, results fused
```
#### Progressive Filtering
Operations chain for maximum efficiency:
- **Best for**: Queries with highly selective filters
- **Performance**: Reduces search space at each step
- **Use case**: Large datasets with specific criteria
```typescript
// Progressive execution for selective query
const results = await brain.find({
where: { userId: "user123" }, // Very selective (1-10 matches)
query: "recent posts", // Applied to filtered set
limit: 5
})
// Metadata filter first, then vector search on results
```
## Fusion Ranking
### Score Combination
When multiple intelligence types return results, scores are intelligently combined:
```typescript
fusionScore = (
vectorScore * vectorWeight + // Semantic relevance (0.4)
graphScore * graphWeight + // Relationship strength (0.3)
fieldScore * fieldWeight // Exact match confidence (0.3)
) / totalWeight
```
### Adaptive Weights
Weights adjust based on query characteristics:
- **Text-heavy query**: Higher vector weight
- **Relationship query**: Higher graph weight
- **Specific filters**: Higher field weight
## Natural Language Processing
### Pattern Recognition
Brainy includes 220+ embedded patterns for natural language understanding:
```typescript
// Natural language automatically parsed
const results = await brain.find(
"show me recent AI papers from Stanford published this year"
)
// Automatically converts to:
// {
// query: "AI papers",
// where: {
// institution: "Stanford",
// published: { gte: "2024-01-01" }
// }
// }
```
### Intent Detection
The NLP processor identifies query intent:
- **Informational**: "what is", "how does"
- **Navigational**: "find", "show me"
- **Transactional**: "create", "update"
- **Analytical**: "compare", "analyze"
## Performance Optimization
### Query Plan Caching
Successful execution plans are cached:
```typescript
// First call parses the natural-language query and builds an execution plan
await brain.find("machine learning papers")
// A structurally similar query reuses that plan, skipping plan generation
await brain.find("deep learning papers")
```
### Self-Optimization
Brainy uses itself to optimize queries:
- Query patterns stored in separate brain instance
- Execution times tracked and analyzed
- Plans automatically improved based on performance
### Index Utilization
Triple Intelligence leverages all available indexes:
- **HNSW Index**: For vector similarity
- **Metadata Index**: For metadata filtering
- **Graph Index**: For relationship traversal
## Advanced Features
### Explain Mode
Diagnose how a query's `where` fields map to the index. Run `brain.explain()`
first whenever `find()` returns surprising or empty results:
```typescript
const plan = await brain.explain({
query: "quantum computing",
where: { category: "research" }
})
console.log(plan.fieldPlan)
// [
// { field: 'category', path: 'column-store', notes: '...' }
// ]
console.log(plan.warnings)
// e.g. ['Field "category" has no index entries. find() will return [] silently...']
```
### Result Ordering
Sort results by any stored field with `orderBy` / `order`:
```typescript
const results = await brain.find({
query: "news articles",
where: { verified: true },
orderBy: 'createdAt', // Newest first
order: 'desc'
})
```
### Similarity Threshold
Find the nearest neighbours of a known entity and keep only close matches with
`near`:
```typescript
const results = await brain.find({
near: { id: anchorId, threshold: 0.9 }, // Only results >= 0.9 similarity
limit: 10
})
```
## Best Practices
### Query Design
1. **Start specific**: Use selective filters when possible
2. **Combine intelligently**: Don't force all three types if not needed
3. **Use limits**: Always specify reasonable result limits
4. **Cache results**: For repeated queries, cache at application level
### Performance Tips
1. **Index first**: Ensure fields used in `where` clauses are indexed
2. **Batch operations**: Use batch methods for bulk queries
3. **Monitor plans**: Use explain mode to understand performance
4. **Optimize patterns**: Train custom patterns for your domain
### Common Patterns
#### Semantic Search with Filtering
```typescript
// Find similar content with constraints
const results = await brain.find({
query: searchText,
where: {
status: 'published',
language: 'en'
}
})
```
#### Related Items Discovery
```typescript
// Find items related to a specific item
const results = await brain.find({
connected: {
to: itemId,
depth: 2,
via: VerbType.RelatedTo
},
limit: 20
})
```
#### Time-based Queries
```typescript
// Recent items matching criteria
const results = await brain.find({
where: {
timestamp: { gte: Date.now() - 86400000 }
},
query: "trending topics",
orderBy: 'timestamp',
order: 'desc'
})
```
## Natural Language Processing
The `find()` method includes advanced NLP capabilities powered by 220+ embedded patterns that understand natural language queries.
### Supported Query Types
```typescript
// Temporal queries
await brain.find("documents from last week")
await brain.find("reports created yesterday")
await brain.find("articles published in Q3 2024")
await brain.find("data from January to March")
// Numeric filters
await brain.find("products with price under $100")
await brain.find("articles with more than 1000 views")
await brain.find("reports showing revenue over 10M")
// Combined conditions
await brain.find("verified research papers about AI from 2024 with high citations")
await brain.find("recent customer reviews with rating above 4 stars")
await brain.find("blog posts by John Smith about machine learning published this month")
// Relationship queries
await brain.find("documents related to project X")
await brain.find("people who work at TechCorp")
await brain.find("products similar to iPhone")
```
### How It Works
1. **Intent Detection**: Identifies what the user is looking for
2. **Entity Extraction**: Extracts names, dates, numbers, categories
3. **Temporal Parsing**: Converts "last week", "Q3 2024" to date ranges
4. **Filter Generation**: Creates appropriate where clauses
5. **Query Fusion**: Combines NLP understanding with vector search
### Pattern Coverage
Brainy includes 220+ pre-computed patterns covering:
- **Temporal**: 40+ patterns for dates and time ranges
- **Numeric**: 30+ patterns for comparisons and ranges
- **Relationships**: 25+ patterns for connections
- **Actions**: 35+ patterns for verbs and intents
- **Entities**: 40+ patterns for people, places, things
- **Domain-specific**: 50+ patterns for tech, business, social
## API Reference
See the [Triple Intelligence API](../api/triple-intelligence.md) for complete method documentation.

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@ -0,0 +1,157 @@
---
title: Zero Configuration
slug: concepts/zero-config
public: false
category: concepts
template: concept
order: 3
description: Brainy auto-detects storage, initializes embeddings, and builds indexes — no configuration required. Works in Node.js and Bun (server-only since 8.0).
next:
- getting-started/installation
- guides/storage-adapters
---
# Zero Configuration & Auto-Adaptation
> **"Zero config by default, fully tunable when you need it."** Construct a
> `Brainy()` with no options and it picks sensible, environment-aware defaults.
> Every default below is overridable through the constructor — see the
> [API Reference](../api/README.md#configuration).
## Overview
Brainy 8.0 is server-only (Node.js 22+ / Bun). With no configuration it:
- selects a storage adapter from the runtime,
- initializes the embedding model (all-MiniLM-L6-v2, 384 dimensions),
- builds and maintains the metadata, graph, and vector indexes,
- sizes its caches and write buffers to the detected memory budget,
- chooses a persistence mode that matches the storage backend, and
- quiets its own logging when it detects a production environment.
There is no public config-generation function — adaptation happens inside the
constructor and `init()`.
## Instant Start
```typescript
import { Brainy } from '@soulcraft/brainy'
// That's it. No config needed.
const brain = new Brainy()
await brain.init()
await brain.add({ data: 'First entity', type: 'concept' })
const results = await brain.find('first')
```
## What Auto-Adaptation Covers
### 1. Storage auto-detection
With no `storage` option, Brainy uses `type: 'auto'`:
- **Filesystem** when running on a runtime with a writable Node filesystem and a
resolvable root directory. This is the default for typical Node/Bun servers and
persists across restarts.
- **In-memory** otherwise (no filesystem access, or an explicit memory request).
Fast, zero I/O, discarded on process exit — ideal for tests and ephemeral
caches.
8.0 ships exactly two storage adapters — `memory` and `filesystem` — plus the
`auto` selector that resolves to one of them. See
[Storage Adapters](../concepts/storage-adapters.md) for the full contract.
```typescript
// Explicit override when you want a specific root
const brain = new Brainy({
storage: { type: 'filesystem', path: './brainy-data' }
})
```
### 2. HNSW quality from the `recall` preset
Vector-index quality comes from a single preset rather than hand-tuned graph
parameters. `config.vector.recall` accepts `'fast'`, `'balanced'`, or
`'accurate'` and defaults to `'balanced'`. The preset maps internally to the
HNSW construction and search parameters (`M` / `efConstruction` / `efSearch`),
so you trade recall against latency with one knob instead of three.
```typescript
const brain = new Brainy({
vector: { recall: 'fast' } // favor latency over recall
})
```
The default JS index is `JsHnswVectorIndex`. An optional native acceleration
provider (the `@soulcraft/cor` package) can replace it with a
higher-performing implementation; the public knobs stay the same. Quantization
and other index-internal acceleration are the native provider's concern, not a
Brainy configuration option.
### 3. Persistence mode follows the backend
`config.vector.persistMode` accepts `'immediate'` or `'deferred'`. Left unset,
Brainy chooses for you:
- **Immediate** on filesystem storage, so the index file stays in lock-step with
the data and survives a crash.
- **Deferred** on in-memory storage, where there is nothing durable to sync to,
so writes are batched for throughput.
```typescript
const brain = new Brainy({
vector: { persistMode: 'deferred' } // batch persistence for write-heavy loads
})
```
### 4. Memory-aware cache and buffer sizing
Brainy reads the container's memory budget — `CLOUD_RUN_MEMORY`, `MEMORY_LIMIT`,
or the cgroup memory limit when running in a container — and sizes its read
caches and write buffers to fit. On a small instance it stays conservative; on a
large one it uses more of the available headroom. Query-result limits are capped
against the same budget (roughly 25 KB per result) to keep a single oversized
query from exhausting memory.
You can pin the cache explicitly:
```typescript
const brain = new Brainy({
cache: { maxSize: 10000, ttl: 3_600_000 }
})
```
### 5. Logging quiets in production
Brainy detects production-style environments (for example `NODE_ENV` set to a
non-development value) and reduces its own log verbosity automatically. This is
logging-only behavior — it does not change indexing, storage, or query results.
## Configuration Override
Zero-config is the default, not a ceiling. Every adaptive decision above has an
explicit constructor option:
```typescript
const brain = new Brainy({
storage: { type: 'filesystem', path: '/var/lib/brainy' },
vector: {
recall: 'accurate',
persistMode: 'immediate'
},
cache: { maxSize: 50000, ttl: 600_000 }
})
await brain.init()
```
See the [API Reference](../api/README.md#configuration) for the complete option
list.
## See Also
- [Architecture Overview](./overview.md)
- [Storage Adapters](../concepts/storage-adapters.md)
- [Scaling Guide](../SCALING.md)
- [API Reference](../api/README.md)

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@ -1,122 +0,0 @@
# Documentation Organization
This document explains the new documentation structure and workflow for managing markdown files in the Brainy project.
## Overview
The documentation has been reorganized from 29 scattered markdown files at the root level to a clean, organized structure with only essential files at the root and categorized documentation in the `docs/` directory.
## New Structure
### Root Level Files (GitHub/NPM Standards)
- `README.md` - Main project documentation
- `CONTRIBUTING.md` - Contribution guidelines
- `CODE_OF_CONDUCT.md` - Community standards
- `CHANGELOG.md` - Version history and release notes
### Documentation Directory Structure
```
docs/
├── technical/ # Technical documentation and analysis
│ ├── CONCURRENCY_ANALYSIS.md
│ ├── STORAGE_CONCURRENCY_ANALYSIS.md
│ ├── THREADING.md
│ ├── STATISTICS.md
│ ├── TESTING.md
│ ├── VITEST_IMPROVEMENTS.md
│ ├── REALTIME_UPDATES.md
│ ├── METADATA_HANDLING.md
│ ├── VECTOR_DIMENSION_STANDARDIZATION.md
│ ├── USE_MODEL_LOADING_EXPLANATION.md
│ ├── STORAGE_TESTING.md
│ ├── TECHNICAL_GUIDES.md
│ ├── ENVIRONMENT_TESTING.md
│ └── SCALING_STRATEGY.md
├── development/ # Development and contributor documentation
│ ├── DEVELOPERS.md
│ ├── DOCUMENTATION_STANDARDS.md
│ ├── MARKDOWN_CONVENTIONS.md
│ ├── EXPECTED_TEST_MESSAGES.md
│ └── PRETTY_TEST_REPORTER.md
└── guides/ # User guides and migration documentation
├── cache-configuration.md
├── hnsw-field-search.md
├── json-document-search.md
├── model-management.md
├── optional-model-bundling.md
├── production-migration-guide.md
└── service-identification.md
```
## CHANGELOG.md Management
### Automated Workflow
The project now uses automated changelog management:
1. **Adding Changes**: Add entries to the `[Unreleased]` section in `CHANGELOG.md`
2. **Version Bumping**: Use npm scripts that automatically update the changelog:
- `npm run version:patch` - Patch version bump + changelog update
- `npm run version:minor` - Minor version bump + changelog update
- `npm run version:major` - Major version bump + changelog update
3. **Manual Updates**: Use `npm run changelog:update` to manually update the changelog
### Changelog Format
The changelog follows the [Keep a Changelog](https://keepachangelog.com/) standard:
- **Added** - New features
- **Changed** - Changes in existing functionality
- **Deprecated** - Soon-to-be removed features
- **Removed** - Now removed features
- **Fixed** - Bug fixes
- **Security** - Vulnerability fixes
### GitHub Integration
The CHANGELOG.md is automatically used for:
- GitHub releases (via `scripts/create-github-release.js`)
- NPM package release notes
- Version history tracking
## Benefits of New Structure
1. **Clean Root Directory**: Only 4 essential markdown files at root level
2. **Better Organization**: Logical categorization of documentation in docs/ subdirectories
3. **GitHub Compliance**: Follows GitHub and NPM best practices
4. **Automated Maintenance**: Changelog updates are automated
5. **Easy Navigation**: Clear directory structure for different doc types
6. **Reduced Clutter**: Temporary and outdated files have been removed
## Workflow for Contributors
### Adding Documentation
1. **Technical docs**`docs/technical/`
2. **Development docs**`docs/development/`
3. **User guides**`docs/guides/`
4. **Temporary files** → Should be avoided; use issues or PRs for temporary documentation
### Making Changes
1. Add changes to `[Unreleased]` section in `CHANGELOG.md`
2. Use appropriate category (Added, Changed, Fixed, etc.)
3. When ready to release, use `npm run version:patch/minor/major`
4. The changelog will be automatically updated with version and date
### Release Process
1. Ensure `[Unreleased]` section has all changes
2. Run `npm run version:patch/minor/major`
3. Run `npm run deploy` to publish and create GitHub release
4. GitHub release will use CHANGELOG.md content
## Migration Notes
- All technical documentation organized in `docs/technical/`
- Development documentation organized in `docs/development/`
- User guides organized in `docs/guides/`
- Temporary summary files and archived content have been cleaned up
- Links in existing documentation may need updates
- New automation ensures changelog stays current
This reorganization provides a sustainable, scalable approach to documentation management that follows industry best practices and integrates seamlessly with GitHub and NPM workflows.

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