# @aws-sdk/endpoint-cache [![NPM version](https://img.shields.io/npm/v/@aws-sdk/endpoint-cache/latest.svg)](https://www.npmjs.com/package/@aws-sdk/endpoint-cache) [![NPM downloads](https://img.shields.io/npm/dm/@aws-sdk/endpoint-cache.svg)](https://www.npmjs.com/package/@aws-sdk/endpoint-cache) > An internal package ## Usage You probably shouldn't, at least directly. ## EndpointCache - uses `mnemonist/lru-cache` for storing the cache. - the `set` operation stores milliseconds elapsed since the UNIX epoch in Expires param based on CachePeriodInMinutes provided in Endpoint. - the `get` operation returns all un-expired endpoints with their Expires values. - the `getEndpoint` operation returns a randomly selected un-expired endpoint.