redis-semaphore

Redis-based distributed mutex (lock) and semaphore implementations for Node.js applications. Current stable version 5.7.0. Actively maintained with regular releases. Key differentiators: fully atomic operations using LUA scripts (fail-safe), built-in lock auto-refresh, optional lock-loss detection, and a simple API. Compared to alternatives like 'redlock', redis-semaphore offers more fine-grained control over lock timeout, acquire attempts, and refresh intervals, plus explicit lost-lock handling. Works exclusively with ioredis client. Ships TypeScript types.