friendica/src/Core/Cache/MemcachedCacheDriver.php

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<?php
namespace Friendica\Core\Cache;
use Friendica\BaseObject;
use Friendica\Core\Cache;
/**
* Memcached Cache Driver
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class MemcachedCacheDriver extends BaseObject implements ICacheDriver
{
/**
* @var Memcached
*/
private $memcached;
public function __construct(array $memcached_hosts)
{
if (!class_exists('Memcached', false)) {
throw new \Exception('Memcached class isn\'t available');
}
$this->memcached = new \Memcached();
$this->memcached->addServers($memcached_hosts);
if (count($this->memcached->getServerList()) == 0) {
throw new \Exception('Expected Memcached servers aren\'t available, config:' . var_export($memcached_hosts, true));
}
}
public function get($key)
{
$return = null;
// We fetch with the hostname as key to avoid problems with other applications
$value = $this->memcached->get(self::getApp()->get_hostname() . ':' . $key);
if ($this->memcached->getResultCode() === \Memcached::RES_SUCCESS) {
$return = $value;
}
return $return;
}
public function set($key, $value, $duration = Cache::MONTH)
{
// We store with the hostname as key to avoid problems with other applications
return $this->memcached->set(
self::getApp()->get_hostname() . ":" . $key,
$value,
time() + $duration
);
}
public function delete($key)
{
return $this->memcached->delete($key);
}
public function clear()
{
return true;
}
}