/**
* @return CacheFile
* @throws Exception
*/
public final function getPersistentBackend()
{
$backend = $this->settings->getCacheBackend();
if ($backend == 'file') {
return new CacheFile($this->settings);
} else {
if ($backend == 'db') {
return new CacheDb($this->settings);
}
}
throw new Exception('No suitable caching backend found for type "' . $backend . '"');
}
