Class: AkCache  - X-Ref

Easy to use class for caching data using a database as
container or the file system.

Akelos Framework provides an easy to use functionality for
caching data using a database as container or the file
system.

By default the cache container is defined in the following
line

<code>define ('AK_CACHE_HANDLER', 1);</code>

in the ''config/config.php'' file

Possible values are:

- 0: No cache at all
- 1: File based cache using the folder defined at AK_CACHE_DIR or the system /tmp dir
- 2: Database based cache. This one has a performance penalty, but works on most servers

Here is a small code spinet of how this works.
<code>
// First we include the cache class and
// create a cache instance
include_once(AK_LIB_DIR.'/AkCache.php');
$Cache =& new AkCache();

// Now we define some details for this cache
$seconds = 3600; // seconds of life for this cache
$cache_id = 'unique identifier for accesing this cache element';

// Now we call the $Cache constructor (ALA AkFramework)
$Cache->init($seconds);

// If the data is not cached, we catch it now
// if it was on cache, $data will hold its content
if (!$data = $Cache->get($cache_id)) {
$data = some_heavy_function_that_takes_too_many_time_or_resources();
$Cache->save($data);
}

// Now you can use data no matter from where did it came from
echo $data;
</code>

This class uses the
[http://pear.php.net/manual/en/package.caching.cache-lite.php
pear Cache_Lite] as driver for file based cache.
In fact you can access an instance of Cache_Lite by
accesing $Cache->_driverInstance.