public RedisCache(RedisCacheOptions options)
        {
            _options = options ?? throw new ArgumentNullException(nameof(options));

            _instance = _options.InstanceName ?? string.Empty;

            if (string.IsNullOrEmpty(_options.Host))
            {
                throw new ArgumentNullException(nameof(_options.Host));
            }

            if (string.IsNullOrEmpty(_options.Password))
            {
                _pool = new PoolRedisClient(_options.Host, _options.Port);
            }
            else
            {
                _pool = new PoolRedisClient(_options.Host, _options.Port, _options.Password);
            }
        }