CACHES

Koala Framework uses a bunch of different caches

Optcode Cache

It is highly recommended to use a optcode cache (aka Php accelerator) to generally improve performance of php scripts.

Examples:

• apc (up to Php 5.5)
• Zend OPcache (default in php core from 5.5)

Kwf_Cache_Simple

This cache is used in Koala Framework as a simple to use cache.

The used backend is automatically found in the following preference:

• memcache (if server.memcache.host is set)
• apc (or apcu) (if php extension is installed)
• file (cache/simple) (fallback, very slow)

Usage Example

$cacheId = 'unique-prefix-123';
$data = Kwf_Cache_Simple::fetch($cacheId);
if ($data === false) {
   $data = someExpensiveMethod();
    Kwf_Cache_Simple::add($cacheId, $data);
}


//delete cache in eg. Events:
Kwf_Cache_Simple::delete($cacheId);

Kwf_Cache_SimpleStatic

Similar as Kwf_Cache_Simple but for cache values that don't change during runtime of application (only when updating the code).

The used backend is automatically found in the following preference:

• apc (or apcu)
• file (cache/simple) (very slow)

Usage Example

$cacheId = 'unique-prefix-123';
$data = Kwf_Cache_SimpleStatic::fetch($cacheId);
if ($data === false) {
   $data = someExpensiveMethod();
    Kwf_Cache_SimpleStatic::add($cacheId, $data);
}

Kwf_Component_Cache_Memory

Used when rendering components. This cache is not cleared when calling clear-cache.

The used backend is automatically found in the following preference:

• memcache
• apc (or apcu)
• file (cache/view)

Kwf_Assets_Cache

Two level cache with Kwf_Cache_SimpleStatic plus file (cache/assets)

Kwf_Media_MemoryCache

Two level cache with Kwf_Cache_Simple plus file (cache/mediameta)