josipmusa/idempotency4j

A simple idempotency handler for your REST APIs.

Express middleware that makes handlers safe to retry — replays the cached response for a duplicate Idempotency-Key instead of re-running it, with pluggable in-memory or Redis storage.

A demo project for idempotent pipeline design, duplicate prevention, and retry-safe processing.

HTTP Idempotency Middleware for Laravel applications

Create more robust Laravel APIs by adding Idempotency support.

Generates Twitter-like Snowflake ids in Java

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Prevents duplicate Sidekiq jobs