/// <summary>
 /// Delete cache by regex pattern in Default DbId (0)
 /// </summary>
 /// <param name="_pattern"></param>
 public static List <string> GetKeyByPattern(string _pattern, int dbid)
 {
     try
     {
         lock (LogSetConnection)
         {
             return(RedisStackExchangeClient.GetKeys(dbid, _pattern));
         }
     }
     catch (Exception ex)
     {
         throw new RedisException();
     }
 }