private function createSimple(): Redis
    {
        $redis = new Redis();
        $redis->connect($this->config['host'], (int) $this->config['port']);
        $redis->setOption(Redis::OPT_READ_TIMEOUT, '-1');
        if ($this->config['database']) {
            $redis->select($this->config['database']);
        }

        return $redis;
    }