LimiterX

A high-performance API rate limiter with fixed and sliding window algorithms.

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Features

• Fixed Window & Sliding Window algorithms
• Per-IP rate limiting
• In-memory cache with automatic cleanup
• Metrics and health check endpoints
• Configurable via environment variables

Installation

git clone <repository-url>
cd limiterx
go mod init limiterx
go mod tidy
go run main.go

Configuration

• PORT - Server port (default: 8080)
• ALGORITHM - fixed or sliding (default: sliding)
• REQUESTS_LIMIT - Max requests per window (default: 100)
• WINDOW_SECONDS - Time window in seconds (default: 60)

# Example
ALGORITHM=fixed REQUESTS_LIMIT=50 WINDOW_SECONDS=30 go run main.go

API Endpoints

GET /api/resource - Protected resource with rate limiting

GET /metrics - Rate limiter statistics

GET /health - Health check

License

MIT License

Contact

Email: contact.amish@yahoo.com