Quick Cache

Script for storing JavaScript objects in the localStorage, if available. The script has a timeout feature that will return a null if the data has expired.

Usage

initialize

with 2s expiration and an error callback handler var cache = new QuickCache(2000, function(error){/*handle error*/});

with no expiration and an error callback handler var cache = new QuickCache(function(error){/*handle error*/});

with 2s expiration var cache = new QuickCache(2000);

with no expiration var cache = new QuickCache();

store data

cache.set('terms',{a:'1',b:'2',c:'3'});

retrieve data

var termData = cache.get('terms');

with the first cache variable above if you did not get the data within 2s it would return a null. on the second cache the data would be {a:'1',b:'2',c:'3'} because a timeout does not exist.

Why Timeout?

Fair enough. Lets say you have some data in a hybrid application. This data may change once a month or once a week. It's not really critical data, but you would like to check for it every once and a while.

\\create cache object to expire once a week
var colorCache = new QuickCache((1000 * 60 * 60 * 24 * 7));

\\try to get colors from cache
var colors = colorCache.get('colors');

\\if colors don't exist or are expired get the latest
if(!colors){
    //call external to get colors
    colors = getColors();
    //refresh the cache
    colorCache.set('colors',colors);
}