CHANGELOG.md

Changelog

All notable changes to the CAG System will be documented in this file.

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

[1.0.0] - 2026-03-25

Changed

• BREAKING: Reorganized project structure to follow professional src-layout
  • Moved all source code to src/cag/ package
  • Organized code into api/, core/, services/, and ui/ modules
  • Updated all import statements to use new package structure
  • Updated Docker and deployment configurations
• Updated pyproject.toml to use src-layout
• Updated entry points in main.py and app_gradio.py

Added

• Comprehensive documentation in docs/ directory
  • ARCHITECTURE.md: System architecture and design patterns
  • SETUP.md: Detailed setup and installation guide
  • API.md: Complete API reference documentation
• CONTRIBUTING.md: Contribution guidelines
• CHANGELOG.md: This file
• Professional directory structure with proper separation of concerns

Fixed

• Import paths now follow Python packaging best practices
• Module organization improves code maintainability

[0.9.0] - 2026-03-24

Added

• Initial release of CAG (Cache Augmentation Generation) System
• FastAPI REST API with document upload and query endpoints
• Gradio web interface for interactive usage
• Intelligent caching with LRU eviction and semantic similarity
• Document processing for PDF, TXT, and MD files
• Vector store integration with ChromaDB
• Google Gemini 2.5 Flash Lite integration
• Docker and Docker Compose support
• Comprehensive test suite
• Redis support for distributed caching
• Prometheus and Grafana monitoring (optional)

Features

• Multi-format document support (PDF, TXT, MD)
• Smart text chunking with overlap
• Semantic document search
• Cache-augmented generation
• RESTful API with OpenAPI documentation
• Interactive Gradio UI
• Health check endpoints
• Statistics and monitoring endpoints
• Environment-based configuration