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Changelog

All notable changes to Prometheus Gateway will be documented in this file.

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

[Unreleased]

Added

  • Comprehensive test suite with 90%+ coverage
  • Professional documentation site with MkDocs
  • GitHub Actions CI/CD pipeline
  • Performance monitoring with custom metrics
  • Security scanning and vulnerability checks

Changed

  • Improved error handling across all components
  • Enhanced logging with structured format
  • Updated documentation with detailed examples

Security

  • Added automated security scanning with bandit
  • Implemented comprehensive input validation
  • Enhanced API key security measures

[1.0.0] - 2024-01-06

Added

  • Multi-Provider Support
  • OpenAI GPT integration (GPT-4, GPT-3.5-turbo)
  • Google Gemini integration (Gemini 2.5 Flash, Pro)
  • Anthropic Claude integration (Claude Sonnet, Opus)

  • Extensible provider architecture

  • Intelligent Routing Engine

  • Configuration-driven model-to-provider mapping
  • Automatic provider selection based on model names

  • YAML-based configuration with validation

  • Two-Level Caching System

  • Redis exact cache for identical requests
  • ChromaDB semantic cache for similar queries
  • Configurable TTL and similarity thresholds

  • Cache hit rate monitoring

  • Data Loss Prevention (DLP)

  • Automatic PII detection using Microsoft Presidio
  • Support for emails, phone numbers, SSNs, credit cards
  • Configurable anonymization strategies

  • Real-time scanning of all requests

  • Security & Authentication

  • API key management system
  • Secure key generation and hashing
  • Rate limiting per API key (10 requests/minute)

  • Request validation and sanitization

  • Monitoring & Observability

  • Prometheus metrics integration
  • Custom metrics for requests, latency, and tokens
  • Grafana dashboard templates

  • Health check endpoints

  • Database Integration

  • SQLModel with SQLite backend
  • API key storage and management
  • Automatic database initialization
  • Migration support

Infrastructure

  • Docker Support
  • Multi-service Docker Compose setup
  • Production-ready containers
  • Volume persistence for data

  • Service health checks

  • Development Tools

  • Comprehensive test suite (pytest)
  • Code quality tools (black, isort, flake8, mypy)
  • Pre-commit hooks
  • Development environment setup

Documentation

  • API Documentation
  • OpenAPI/Swagger integration
  • Interactive API explorer
  • Request/response examples

  • Error code documentation

  • User Guides

  • Installation instructions
  • Configuration reference
  • API usage examples
  • Troubleshooting guide

[0.3.0] - 2024-01-05

Added

  • Semantic caching with ChromaDB
  • Vector similarity search
  • Sentence transformer embeddings
  • Cache analytics and monitoring

Changed

  • Improved cache key generation
  • Enhanced error handling for vector operations
  • Updated configuration schema

[0.2.0] - 2024-01-04

Added

  • Google Gemini provider integration
  • Anthropic Claude provider integration
  • Provider translation layers
  • Configuration-driven routing

Changed

  • Refactored provider architecture
  • Improved request/response handling
  • Enhanced model compatibility

[0.1.0] - 2024-01-03

Added

  • Initial release
  • OpenAI provider integration
  • Basic FastAPI application
  • Redis caching support
  • Prometheus metrics
  • API key authentication
  • Rate limiting
  • DLP scanning

Infrastructure

  • Docker containerization
  • Basic CI/CD pipeline
  • SQLite database integration

Version History

Version Release Date Key Features
1.0.0 2024-01-06 Multi-provider, semantic caching, comprehensive testing
0.3.0 2024-01-05 Semantic caching, vector search
0.2.0 2024-01-04 Google & Anthropic providers
0.1.0 2024-01-03 Initial release, OpenAI integration

Contributing

See our Testing Guide for development and testing information.

Support