High-Throughput Go Rate Limiter

• Go
• Redis
• Docker
• Middleware
• Strategy Pattern

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HTTP middleware designed to protect web services against traffic spikes and abuse. Implements rate limiting based on client IP addresses or custom access tokens with independent limits and block windows:

• Dual Limiting Strategy: Controls requests per second per IP, with prioritized token-based overrides (via API_KEY header)
• Strategy Pattern Architecture: Decouples rate-limiting evaluation and storage from the HTTP middleware layer, allowing seamless swapping of Redis for other backends
• Configurable Thresholds: Independent request limits and cooldown/block durations driven by environment variables
• Standard Protocol Compliance: Returns HTTP 429 (Too Many Requests) with clear messaging upon exceeding configured limits
• Reproducible Setup: Includes automated unit/integration tests and Docker Compose for the application and Redis server