public function save(\Zend_EventManager_EventDescription $event)
    {
        $params = $event->getParams();
        if(!isset($params['data'])) {
            throw new \Zend_EventManager_Exception_InvalidArgumentException('Missing param data.');
        }

        $this->cache->save($params['data'], $this->_getIdentifier($event), $this->_getTags($event));
    }