/// <summary>
        /// Removes items by pattern
        /// </summary>
        /// <param name="pattern">pattern</param>
        public virtual void RemoveByPattern(string pattern)
        {
            var _muxer = RedisManager.GetMuxer();
            var _db = RedisManager.GetDb();
            foreach (var ep in _muxer.GetEndPoints())
            {
                var server = _muxer.GetServer(ep);
                var keys = server.Keys(pattern: "*" + pattern + "*", database: _db.Database);
                foreach (var key in keys)
                    _db.KeyDelete(key);
            }
        }