API Gateway

A high-performance, modular API Gateway built with Go, designed for microservices architectures. Features pluggable rate limiting strategies, API key management, and reverse proxy capabilities.

Key Features

• Flexible Rate Limiting: Pluggable strategies (Token Bucket, Sliding Window, Fixed Window) with Redis-backed distributed storage
• API Key Authentication: Secure request validation with customizable rate limits per key
• Reverse Proxy: Intelligent request routing with load balancing support
• Modular Architecture: Interface-driven design for easy extension and testing
• Production Ready: Docker support, metrics collection, and comprehensive logging
• Developer Friendly: In-memory storage option for local development

Use Cases

• Protect backend microservices from abuse and traffic spikes
• Manage API access with granular rate limiting per client
• Route requests across multiple service instances
• Monitor API usage and performance metrics

Tech Stack

• Go 1.25.5
• Redis for distributed rate limiting
• PostgreSQL for API key storage
• Docker & Docker Compose