"Least Recently Used" (LRU) cache compatible to ES6 Map
Useful for caching with limited memory usage. API compatible with built-in Map object.
$ npm install map-lru
import MapLRU from 'map-lru' // ES5
// const MapLRU = require('map-lru') // commonJs
const cache = new MapLRU(10)
cache.set('♥', '♥♥♥')
cache.has('♥');
//=> true
cache.get('♥');
//=> '♥♥♥'
cache.last
//=> '♥'
cache.size
//=> 1Creates a new instance
Parameters
maxSizeNumber max. size of the LRU cache.
Additional methods
-
lastReturns the last accessed key.
Returns Any
-
peek(key)Get an item without marking it as recently used.
Parameters
keyAny
-
keysAccessed()keys in order of access - last one is most recently used one.
Returns Iterator Iterator object
Default Map methods