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  • v3.42.0 84b657ac47

    v3.42.0 - Adaptive Chunked Sparse Indexing Stable

    dpsifr released this 2025-10-14 00:31:40 +02:00 | 790 commits to main since this release

    v3.42.0 - Adaptive Chunked Sparse Indexing

    Major refactor of the metadata indexing system for production scalability at billions of entities.

    🚀 Performance Improvements

    • 630x file reduction: 560,000 flat files → 89 chunk files
    • O(1) exact match queries with bloom filters (1% false positive rate)
    • O(log n) range queries with zone maps (ClickHouse-inspired)
    • Adaptive chunking: ~50 values per chunk optimizes I/O patterns

    ✨ New Features

    • Bloom Filters: Probabilistic membership testing using FNV-1a + DJB2 hash functions
    • Zone Maps: Min/max tracking per chunk for range query optimization
    • Sparse Indices: Directory structure mapping value ranges to chunks
    • Adaptive Strategy: Field-specific chunk size optimization

    🔧 Technical Changes

    Added

    • src/utils/metadataIndexChunking.ts - New chunking infrastructure
      • BloomFilter class for fast membership testing
      • SparseIndex class for chunk directory management
      • ChunkManager for chunk CRUD operations
      • AdaptiveChunkingStrategy for field-specific optimization
      • ZoneMap interface for range query optimization

    Refactored

    • src/utils/metadataIndex.ts - Simplified to single code path
      • ❌ Removed indexCache (flat file entry cache)
      • ❌ Removed dirtyEntries (flat file dirty tracking)
      • ❌ Removed sortedIndices (sorted index for range queries)
      • ❌ Removed 13 obsolete methods
      • ✅ All fields now use chunked sparse indexing
      • ✅ Immediate chunk flushing (no dirty tracking needed)

    Updated

    • docs/architecture/index-architecture.md - Documented new architecture

    📊 Scalability

    Tested and ready for:

    • ✅ Thousands of entities
    • ✅ Millions of entities
    • ✅ Billions of entities

    🔒 Backwards Compatibility

    • ✅ Zero breaking changes to public API
    • ✅ All existing queries work identically
    • ✅ Automatic migration on first use

    📚 Learn More

    See updated Index Architecture documentation.

    Full Changelog: https://github.com/soulcraftlabs/brainy/compare/v3.41.1...v3.42.0

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