David Snelling
364360d447
The __words__ keyword index stores 50-5000 entries per entity (one per word), which inflated avg entries/entity well above the corruption threshold of 100. This caused: 1. validateConsistency() to falsely detect corruption on every startup, triggering unnecessary clearAllIndexData() + rebuild() cycles 2. getStats() to log false "Metadata index may be corrupted" warnings and report inflated totalEntries/totalIds stats Both methods now skip __words__ when counting, so stats and health checks reflect metadata fields only (noun, type, createdAt, etc.). Keyword search is unaffected since the __words__ field index itself is not modified.
450 lines
11 KiB
Markdown
450 lines
11 KiB
Markdown
# Cloudflare R2 Cost Optimization Guide for Brainy
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> **Cost Impact**: $0 egress fees + 96% storage savings = Lowest cloud storage costs
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## Overview
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Cloudflare R2 is an S3-compatible object storage with **zero egress fees**, making it ideal for high-traffic applications. Brainy fully supports R2 with lifecycle policies and batch operations.
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## Cost Breakdown
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### R2 Pricing (As of 2025)
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```
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Storage: $0.015/GB/month
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Class A Operations (write): $4.50 per million
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Class B Operations (read): $0.36 per million
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Egress: $0.00 (FREE!)
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```
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### Comparison to AWS S3 (500TB Dataset)
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**AWS S3 Standard:**
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```
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Storage: 500TB × $0.023/GB × 12 = $138,000/year
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Egress (assume 100TB/month): 1.2PB × $0.09/GB = $108,000/year
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Operations: $5,000/year
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Total: $251,000/year
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```
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**Cloudflare R2 Standard:**
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```
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Storage: 500TB × $0.015/GB × 12 = $90,000/year
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Egress: $0 (FREE!)
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Operations: $5,000/year
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Total: $95,000/year
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Savings vs AWS: $156,000/year (62%)
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```
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**R2's Zero Egress Advantage:**
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- **High-traffic apps**: Save $100k-$1M/year in egress fees
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- **Video/media delivery**: No CDN egress costs
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- **API responses**: Unlimited reads at no extra cost
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## R2 Storage Classes (Coming Soon)
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**Current State (2025):**
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- R2 currently has only **one storage class** (Standard)
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- No lifecycle policies or tier transitions yet
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- Cloudflare plans to add infrequent access tiers
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**When lifecycle features arrive:**
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- Brainy is already prepared with `setLifecyclePolicy()` support
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- Will work seamlessly once Cloudflare enables lifecycle management
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## Strategy 1: Use R2 Standard (Current Best Practice)
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### Setup: S3-Compatible API
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```typescript
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import { Brainy } from '@soulcraft/brainy'
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import { S3CompatibleStorage } from '@soulcraft/brainy/storage'
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// R2 uses S3-compatible API
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const storage = new S3CompatibleStorage({
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endpoint: `https://${process.env.R2_ACCOUNT_ID}.r2.cloudflarestorage.com`,
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bucket: 'my-brainy-data',
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region: 'auto', // R2 uses 'auto' region
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accessKeyId: process.env.R2_ACCESS_KEY_ID,
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secretAccessKey: process.env.R2_SECRET_ACCESS_KEY
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})
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const brain = new Brainy({ storage })
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await brain.init()
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```
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### Cost Calculation (500TB on R2)
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```
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Storage: 500TB × $0.015/GB × 12 = $90,000/year
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Class A ops (10M writes): $45/year
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Class B ops (100M reads): $36/year
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Egress: $0
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Total: $90,081/year
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```
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**Compared to AWS S3 (with egress):**
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- AWS: $251,000/year
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- R2: $90,081/year
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- **Savings: $160,919/year (64%)**
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## Strategy 2: R2 + Workers (Edge Computing)
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### Setup: Compute at the Edge
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```typescript
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// Cloudflare Worker (runs at edge)
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export default {
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async fetch(request, env) {
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// Initialize Brainy with R2
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const storage = new S3CompatibleStorage({
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endpoint: env.R2_ENDPOINT,
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bucket: env.R2_BUCKET,
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accessKeyId: env.R2_ACCESS_KEY,
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secretAccessKey: env.R2_SECRET_KEY,
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region: 'auto'
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})
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const brain = new Brainy({ storage })
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await brain.init()
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// Process at edge (no origin server needed)
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const results = await brain.search(request.query)
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return new Response(JSON.stringify(results))
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}
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}
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```
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### Cost Calculation (Workers + R2)
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```
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R2 Storage (500TB): $90,000/year
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Workers (10M requests/day):
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- First 100k requests/day: FREE
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- Additional 350M requests/month: $1,750/year
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- CPU time (50ms avg): $5,000/year
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Total: $96,750/year
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vs Traditional Setup (AWS S3 + EC2 + CloudFront):
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- S3: $138,000/year
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- EC2 (t3.xlarge × 4): $24,000/year
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- CloudFront egress: $50,000/year
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- Load balancer: $3,000/year
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Total: $215,000/year
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Savings: $118,250/year (55%)
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```
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## Strategy 3: Hybrid Multi-Cloud (R2 + S3)
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### Setup: R2 for Hot Data, S3 for Archives
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```typescript
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// Use R2 for frequently accessed data (zero egress)
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const hotStorage = new S3CompatibleStorage({
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endpoint: `https://${process.env.R2_ACCOUNT_ID}.r2.cloudflarestorage.com`,
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bucket: 'brainy-hot',
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region: 'auto',
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accessKeyId: process.env.R2_ACCESS_KEY_ID,
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secretAccessKey: process.env.R2_SECRET_ACCESS_KEY
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})
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// Use AWS S3 with Intelligent-Tiering for cold data
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const coldStorage = new S3CompatibleStorage({
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endpoint: 's3.amazonaws.com',
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bucket: 'brainy-archive',
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region: 'us-east-1',
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accessKeyId: process.env.AWS_ACCESS_KEY_ID,
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secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY
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})
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// Initialize separate Brainy instances or implement tiering logic
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```
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### Cost Calculation (300TB R2 + 200TB S3 Archive)
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```
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R2 Hot Data (300TB):
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Storage: 300TB × $0.015/GB × 12 = $54,000/year
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Egress: $0
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S3 Cold Data (200TB with lifecycle → Deep Archive):
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Storage: 200TB × $0.00099/GB × 12 = $2,376/year
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Ops: $1,000/year
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Total: $57,376/year
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vs All AWS S3:
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- S3 storage + egress: $251,000/year
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Savings: $193,624/year (77%)
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```
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## Batch Operations
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### Efficient Bulk Deletions
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```typescript
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// R2 supports S3 batch delete API
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const idsToDelete = [/* array of entity IDs */]
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const paths = idsToDelete.flatMap(id => {
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const shard = id.substring(0, 2)
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return [
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`entities/nouns/vectors/${shard}/${id}.json`,
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`entities/nouns/metadata/${shard}/${id}.json`
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]
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})
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// Batch delete (1000 objects per request)
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await storage.batchDelete(paths)
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// Cost impact:
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// - Individual deletes: 1M × $4.50/1M = $4.50
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// - Batch deletes: 1k batches × $4.50/1M = $0.0045 (1000x cheaper!)
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```
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## R2 Advanced Features
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### 1. R2 Custom Domains
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**Free custom domains for R2 buckets:**
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```bash
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# Configure custom domain in Cloudflare dashboard
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# Then access via your domain
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https://storage.yourdomain.com/entities/nouns/vectors/...
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# Benefits:
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# - No additional cost
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# - Automatic SSL/TLS
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# - Global CDN included
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# - DDoS protection
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```
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### 2. R2 Event Notifications
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**Trigger Workers on object events:**
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```typescript
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// Worker triggered on R2 object upload
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export default {
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async fetch(request, env) {
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// Process new objects automatically
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// E.g., index new entities, generate thumbnails, etc.
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}
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}
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// Cost: Only pay for Worker execution (no polling needed)
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```
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### 3. R2 Presigned URLs
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```typescript
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// Generate presigned URL for direct browser uploads
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const url = await storage.getPresignedUrl('upload-path', 3600) // 1 hour expiry
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// Client uploads directly to R2 (no server bandwidth used)
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```
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## Monitoring and Management
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### Get Storage Status
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```typescript
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const status = await storage.getStorageStatus()
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console.log('Storage type:', status.type) // 's3-compatible'
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console.log('Bucket:', status.details.bucket)
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console.log('Endpoint:', status.details.endpoint)
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```
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### Cloudflare Dashboard Monitoring
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1. **R2 Dashboard** → View bucket metrics
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2. **Analytics** → Track requests, storage, and bandwidth
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3. **Workers Analytics** → Monitor edge compute usage
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4. **Logs** → Real-time logs with Logpush
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### Expected Metrics
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```
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Storage: Growing with your data
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Class A ops: Writes (higher cost)
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Class B ops: Reads (minimal cost)
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Egress: Always $0 (R2's advantage)
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```
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## Comparison Table: R2 vs Other Providers
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| Feature | R2 | AWS S3 | GCS | Azure |
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|---------|-----|--------|-----|-------|
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| **Storage** | $0.015/GB | $0.023/GB | $0.020/GB | $0.0184/GB |
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| **Egress** | **$0** | $0.09/GB | $0.12/GB | $0.087/GB |
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| **Lifecycle Tiers** | Coming soon | 6 tiers | 4 classes | 3 tiers |
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| **S3 API Compatible** | ✅ Yes | ✅ Native | ⚠️ Via interop | ⚠️ Via SDK |
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| **CDN Included** | ✅ Yes | ❌ Extra cost | ❌ Extra cost | ❌ Extra cost |
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| **Edge Compute** | ✅ Workers | ❌ Lambda@Edge | ❌ Cloud Functions | ❌ Functions |
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## R2 Free Tier
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**Generous free tier:**
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```
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Storage: 10 GB free per month
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Class A ops: 1 million free per month
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Class B ops: 10 million free per month
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Egress: Unlimited (always free)
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```
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**Perfect for:**
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- Development and testing
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- Small applications (<10GB)
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- Prototypes
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## Best Practices
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1. ✅ **Use R2 for high-egress workloads** - Zero egress fees
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2. ✅ **Combine with Workers** - Edge compute included
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3. ✅ **Use custom domains** - Free branded URLs
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4. ✅ **Batch operations** for deletions - 1000x cheaper
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5. ✅ **Use presigned URLs** - Direct client uploads
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6. ✅ **Monitor with Analytics** - Built-in dashboarding
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7. ✅ **Consider hybrid approach** - R2 hot + S3 archive cold
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## Migration from S3 to R2
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### Using rclone
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```bash
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# Install rclone
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brew install rclone # or apt-get install rclone
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# Configure S3 source
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rclone config create s3-source s3 \
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access_key_id=$AWS_ACCESS_KEY \
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secret_access_key=$AWS_SECRET_KEY \
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region=us-east-1
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# Configure R2 destination
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rclone config create r2-dest s3 \
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access_key_id=$R2_ACCESS_KEY \
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secret_access_key=$R2_SECRET_KEY \
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endpoint=https://$R2_ACCOUNT_ID.r2.cloudflarestorage.com \
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region=auto
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# Copy data
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rclone copy s3-source:my-bucket r2-dest:my-bucket --progress
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# Verify
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rclone check s3-source:my-bucket r2-dest:my-bucket
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```
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### Cost of Migration
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```
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Data transfer out from S3: 500TB × $0.09/GB = $45,000
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Data transfer into R2: $0 (ingress is free)
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One-time migration cost: $45,000
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Monthly savings after migration:
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S3 storage + egress: $20,833/month
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R2 storage: $7,500/month
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Savings: $13,333/month
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ROI: 3.4 months
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```
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## Future: R2 Lifecycle Policies (When Available)
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### Prepared for Future Features
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```typescript
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// Brainy is ready for R2 lifecycle features
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await storage.setLifecyclePolicy({
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rules: [{
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id: 'archive-old-data',
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prefix: 'entities/',
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status: 'Enabled',
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transitions: [
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{ days: 30, storageClass: 'INFREQUENT_ACCESS' }, // When available
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{ days: 90, storageClass: 'ARCHIVE' }
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]
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}]
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})
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// Expected cost impact (when lifecycle is available):
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// Standard: $0.015/GB
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// Infrequent: ~$0.008/GB (estimated)
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// Archive: ~$0.002/GB (estimated)
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```
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## Troubleshooting
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### Issue: Connection errors
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**Solution:**
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```typescript
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// Ensure correct endpoint format
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const storage = new S3CompatibleStorage({
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endpoint: `https://${accountId}.r2.cloudflarestorage.com`,
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// NOT: `https://r2.cloudflarestorage.com/${accountId}`
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region: 'auto', // R2 requires 'auto'
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forcePathStyle: false // R2 uses virtual-hosted-style
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})
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```
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### Issue: High Class A operation costs
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**Solution:**
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- Use batch operations (writes are most expensive)
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- Cache frequently written data
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- Consolidate small writes into larger batches
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- Consider Workers KV for high-frequency writes
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### Issue: Need lifecycle management now
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**Solution:**
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- Manually move old data to S3 Deep Archive
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- Use hybrid approach: R2 for hot, S3 for cold
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- Wait for R2 lifecycle features (planned)
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## Summary
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**R2 Advantages:**
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- ✅ **Zero egress fees** - Unlimited reads at no cost
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- ✅ **Lower storage costs** - $0.015/GB vs $0.023/GB (AWS)
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- ✅ **S3-compatible API** - Drop-in replacement for S3
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- ✅ **Global CDN included** - No additional CDN costs
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- ✅ **Edge Workers** - Compute at the edge
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- ✅ **Free custom domains** - Branded URLs
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- ✅ **No minimums** - No minimum storage duration
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**R2 Limitations (Current):**
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- ⚠️ Single storage class (for now)
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- ⚠️ No lifecycle policies yet (coming soon)
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- ⚠️ Less mature than S3/GCS/Azure
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**Recommended Use Cases:**
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- 🎯 High-traffic APIs (zero egress fees!)
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- 🎯 Video/media delivery (massive savings)
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- 🎯 User-generated content
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- 🎯 Web application assets
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- 🎯 Hot data storage
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**500TB Example (R2 vs AWS S3 with 100TB/month egress):**
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- AWS S3: $251,000/year
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- Cloudflare R2: $90,000/year
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- **Savings: $161,000/year (64%)**
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**1PB Example (R2 vs AWS S3 with 200TB/month egress):**
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- AWS S3: $686,000/year
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- Cloudflare R2: $180,000/year
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- **Savings: $506,000/year (74%)**
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---
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**Last Updated**: 2025-10-17
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**Cloud Provider**: Cloudflare R2
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**Key Advantage**: **$0 egress fees forever**
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