async-cacher

A lightweight zero-dependency async cache library for Node.js and browser (current version 2.0.0). It caches async data sources (Promise-returning functions) with configurable TTL, prevents duplicate concurrent requests for the same key (deduplication), and supports forced refresh and per-key clearing. Released in 2016 and still maintained with a small API surface. Compared to alternatives like lru-cache or node-cache, async-cacher focuses solely on async cache coordination with built-in deduplication.