public function save($id, $data, $lifetime = null, $tag = null, $bypass_control = false)
    {
        $lifetime = $this->getLifeTime($lifetime);

        if (false === $this->_cache->set($id, (is_array($data) ? $data : ''.$data), $lifetime)) {
            return $this->_onError('save');
        }

        if (null !== $tag) {
            $this->saveTag($id, $tag);
        }

        return true;
    }