smart-ai-cache/CHANGELOG.md

🚀 Lightning-fast AI response caching with Redis support. Reduce OpenAI/Claude/Gemini API costs by 40-80% with sub-millisecond cache lookups.

# Changelog

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

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [1.0.6] - 2024-08-28

### Added
- Enhanced README with comprehensive Redis examples
- Docker Compose setup for Redis in production
- Migration guide from v1.0.4 to v1.0.5+
- Advanced cache management features documentation
- Performance benchmarking section with real metrics
- Complete package metadata for better NPM discoverability

### Changed
- Improved package description for better searchability
- Updated keywords for broader AI/ML community reach
- Enhanced documentation structure with table of contents

## [1.0.5] - 2024-08-28

### Added
- **Redis storage backend** with full error handling and fallback
- **Comprehensive error handling** with retry logic and exponential backoff
- **Pattern-based cache invalidation** (`deleteByPattern` method)
- **Input validation** for configuration and runtime parameters
- **Performance benchmarking script** (`npm run benchmark`)
- **93.7% test coverage** with 50 comprehensive tests
- **Graceful degradation** when cache storage fails
- **Protected methods** for provider inheritance (replaces `@ts-ignore` hacks)

### Changed
- **BREAKING**: Cache methods are now async (`clear()`, `delete()`, `has()`, `getCacheSize()`)
- **BREAKING**: Provider classes no longer require client instances
- Cache operations now use storage abstraction for better extensibility
- Improved statistics tracking with provider-specific metrics
- Enhanced key generation with better normalization

### Fixed
- LRU eviction performance optimizations
- Memory leak prevention in concurrent scenarios  
- TypeScript compilation issues with ioredis v5
- Test reliability and console output cleanup

### Performance
- **Cache lookup**: 0.0009ms (1,111x faster than 1ms requirement)
- **Memory usage**: 2.86MB for 10K entries (35x better than 100MB requirement)
- **Throughput**: 451,842 requests/second
- **LRU eviction**: 86μs per operation

## [1.0.4] - 2024-08-27

### Added
- GitHub integration and workflow setup
- Version bump and release automation

### Fixed
- Package distribution and build process

## [1.0.3] - 2024-08-27

### Added
- Basic caching functionality for AI responses
- Support for OpenAI, Anthropic, and Google AI providers
- In-memory storage with LRU eviction
- Statistics tracking for cache performance
- TypeScript definitions and documentation

### Features
- Zero-configuration setup for quick start
- Provider-specific classes with automatic cost tracking
- MD5-based cache key generation
- Comprehensive test suite with Jest
- TypeDoc documentation generation

## [1.0.0] - Initial Release

### Added
- Core caching middleware for AI API responses
- Multi-provider support (OpenAI, Anthropic, Google)
- Basic statistics and cost tracking
- TypeScript support
- MIT license

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## Migration Notes

### v1.0.4 → v1.0.5+
- Update cache method calls to use `await`
- Remove client instances from provider constructors
- Consider upgrading to Redis for production deployments
- Update error handling to leverage new retry logic

### v1.0.5 → v1.0.6
- No breaking changes
- Enhanced documentation and package metadata
- New benchmarking capabilities

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For more details on any release, see the [GitHub releases page](https://github.com/ArchiesDubey/smart-ai-cache/releases).