<div class="intro">

<p>OfflineCache stores data in HTML 5 localStorage when available so that data persists across browser sessions. When localStorage is disabled or altogether unavailable (i.e., IE6 and IE7) data is simply cached in local JavaScript memory and will not persist across browser sessions.</p>

</div>

<div class="example">

{{>cache-basic-source}}

</div>

```

YUI().use("cache-offline", function(Y) {

var cache = new Y.CacheOffline({

sandbox:"6-hr-cache", // Pass in a unique identifier

expires:21600000 // Expire data after 6 hours

});

// Add entries to the Cache

cache.add("key1", "value1");

cache.add("key2", "value2");

// Retrieve a cached entry

var cachedentry = cache.retrieve("key1");

// Cached entry is an object with the following properties

alert("cached key: " + cachedentry.request +

" cached value: " + cachedentry.response +

" cached at: " + cachedentry.cached +

" expires at: " + cachedentry.expires);

// Flush the cache

cache.flush();

});

```

<h2>Complete Example Source</h2>

```

{{>cache-offline-source}}

```