private void DoSomething2(int id) { var cacheKey = $"RedisLock2:{id}"; if (RedisDb.SetNx(cacheKey, "1")) { //关注点1:设置过期时间失败 RedisDb.Expire(cacheKey, 5); WriteColorLine($"正在处理ID【{id}】", ConsoleColor.Green); Thread.Sleep(1 * 1000); WriteColorLine($"处理ID结束【{id}】", ConsoleColor.Red); //关注点2:超时删除 RedisDb.Del(cacheKey); } else { WriteColorLine($"ID【{id}】正在处理中", ConsoleColor.Yellow); } }