cachemanager

CacheManager

A very simple cache manager

CacheManager's sole point is to keep track of how much memory is cached and remove things from the cache when new things are added and there's no more space.

Usage

var CacheManager = require('cachemanager');
var cacheManager = new CacheManager();

var id = "foo";
var content = "bar";
cacheManager.cache(id, content);

var cachedContent = cacheManager.get(id);

API

• Cache(options)

  options are optional

  • cacheSizeLimit

    the number of bytes the cache can hold. Defaults to 64 meg.

• Cache.cache(id, content, opt_size)

  Adds content to the cache. Content is assumed to be some object with a 'length' field but if not you can pass in a size as the 3rd argument. For example to cache strings you might want to do

  cacheManager.cache(id, someString, someString.length * 2)
  

  Since strings in JavaScript used at least 2 bytes per character.

• Cache.uncache(id)

  allows you to remove an a specific object from the cache. id can be a single id or an array of ids.

• Cache.setCacheLimit

  Changes the cache's size limit. If it's over this limit things will be removed from the cache until it's under the limit.

• Cache.clear

  clears the cache