go-idempotency

HTTP middleware for idempotent request handling in Go. Prevents duplicate processing of requests by caching responses based on idempotency keys—essential for payment, financial, and other critical APIs.

Features

• 🔒 Prevents duplicate operations using idempotency keys
• 🚀 Multiple storage backends: in-memory and Redis
• ⚡ Concurrent request handling with distributed locking
• 🎯 Request fingerprinting (method + path + body hash)
• ⏱️ Configurable TTL for cached responses
• 🧪 Thoroughly tested with 90%+ coverage
• 📦 Zero dependencies (except storage drivers)

Installation

go get github.com/AnandSundar/go-idempotency