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Changelog

All notable changes to LadybugDB will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Added

  • Initial public release preparation
  • Comprehensive documentation

0.1.0 - 2025-01-29

Added

Core Engine

  • Unified Query Engine - Single interface for SQL, Cypher, Vector, and Hamming queries
  • Cypher Transpiler - Converts Cypher graph queries to SQL recursive CTEs
  • Variable-length path support - MATCH (a)-[:TYPE*1..5]->(b) patterns
  • Butterfly detection - Track causal amplification chains through graphs

Hamming SIMD Engine

  • AVX-512 acceleration - 65M Hamming comparisons/sec
  • Zero-allocation search - Pre-allocated BufferPool for hot path
  • Numba JIT compilation - Native machine code via @njit decorators
  • 10K-bit fingerprints - 157 uint64 values per fingerprint

VSA Operations

  • BIND (XOR) - Create compound representations
  • UNBIND - Recover components from bound vectors
  • BUNDLE - Majority vote for prototype creation
  • PERMUTE - Encode sequence/position information
  • SEQUENCE - Create ordered sequences of symbols

Compatibility Layer

  • Jina API - JinaClient, Document, DocumentArray, Flow
  • Neo4j API - GraphDatabase, Session, Transaction, Result
  • Pydantic-style DTOs - Node, Edge, Thought, Concept, etc.
  • Agent coordination - Handover, Decision, Blocker DTOs

Compression

  • Dictionary encoding - For low-cardinality strings
  • Run-length encoding (RLE) - For repeated values
  • Frame-of-reference (FOR) - For small integers
  • Delta encoding - For sequential/sorted data
  • Automatic selection - Best encoding chosen per column
  • Chunk pruning - Skip irrelevant chunks using statistics

Utilities

  • Content-based fingerprints - SHA-256 + LFSR expansion
  • Semantic chunking - Paragraph/sentence boundary detection
  • Fixed-size chunking - With configurable overlap

Documentation

  • Quickstart guide
  • Complete API reference
  • Architecture deep dive
  • Performance benchmarks
  • Contributing guidelines

0.0.1 - 2025-01-28

Added

  • Initial prototype
  • Basic Hamming distance implementation
  • Simple SQL interface

Roadmap

[0.2.0] - Planned

  • PostgreSQL wire protocol compatibility
  • GPU acceleration (CUDA Hamming kernels)
  • Distributed mode with Raft consensus
  • Web UI for visualization
  • More compression algorithms (Zstd, LZ4)

[0.3.0] - Planned

  • Kubernetes operator
  • Prometheus metrics
  • OpenTelemetry tracing
  • Backup/restore tooling
  • Schema migration system

[1.0.0] - Planned

  • Stable API guarantee
  • Production hardening
  • Enterprise features (RBAC, audit logs)
  • Commercial support option