private static function connect() { if (self::$memcache) { return; } self::$memcache = new Memcached(); if (!self::$memcache->addServer(MEMCACHE_HOST, MEMCACHE_PORT)) { throw new CacheException('Unable to add server ' . MEMCACHE_HOST . ' on port ' . MEMCACHE_PORT . ', ResultCode:' . self::$memcache->getResultCode()); } self::$requestStats['get'] = 0; self::$requestStats['set'] = 0; self::$requestStats['del'] = 0; }