public function read($key)
    {
        if ($value = $this->memcache->get($key)) {
            $arr = unserialize($value);
            $this->changed = $arr['changed'];
            $this->ip      = $arr['ip'];
            $this->vars    = $arr['vars'];
            $this->key     = $key;
        }

        if ($this->debug) {
            $this->debug('get', $key, $value);
        }

        return $this->vars ?: '';
    }