lru-cache

Creating a cache instance

This code sample demonstrates how to create a new LRU cache instance with a maximum of 500 items and a maximum age of one hour for each item.

{"const LRU = require('lru-cache');
const options = { max: 500, maxAge: 1000 * 60 * 60 };
const cache = new LRU(options);"}

Setting and getting cache items

This code sample shows how to set a value in the cache with a key and then retrieve that value using the same key.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
const value = cache.get('key');"}

Checking if a key is in the cache

This code sample illustrates how to check if a key is present in the cache without updating the recent-ness or deleting it.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
const hasKey = cache.has('key');"}

Deleting a key from the cache

This code sample shows how to delete a specific key from the cache.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
cache.del('key');"}

Resetting the cache

This code sample demonstrates how to completely clear the cache.

{"const LRU = require('lru-cache');
const cache = new LRU();
cache.set('key', 'value');
cache.reset();"}