zensh / lrucache

LRU Cache for node.js/browser.

LRUCache

LRU Cache for node.js/browser.

使用链表实现的 LRU 缓存。get、set 和 update 方法会更新 LRU 优先级。

Install

Node.js:

npm install lrucache

bower:

bower install lrucache

Browser:

<script src="/pathTo/lrucache.js"></script>

API

const LRUCache = require('lrucache')

Class LRUCache([capacity])

• capacity: : Optional, Type: Number, Default: Number.MAX_SAFE_INTEGER.

const cache = LRUCache(100)

LRUCache.prototype.get(key)

Return value.

let a = cache.get('a')

LRUCache.prototype.set(key, value)

Return this.

cache.set('a', [1, 2, 3])

LRUCache.prototype.update(key, fn)

Return this, It only run when key exists.

cache.update('a', function (a) {
  a.push(4)
  return a
})

LRUCache.prototype.remove(key)

Return this.

cache.remove('a')

LRUCache.prototype.removeAll(key)

Return this.

cache.removeAll()

LRUCache.prototype.keys()

Return a array of keys.

cache.keys()

LRUCache.prototype.has(key)

Return true or false.

cache.has('a')

LRUCache.prototype.staleKey()

Return the stalest key or null.

let staleKey = cache.staleKey()

LRUCache.prototype.popStale()

Return the stalest data or null.

let staleDate = cache.popStale()

LRUCache.prototype.info()

Return info.

cache.info()