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From Table 1, we can see that NTP can achieve 556.9 times magnification, which comes from NTP's monlist command. The NTP monlist command is used to query all the records of recent communication with the Server. The server returns up to 600 communication records, which is a very large multiple. However, there are a large number of NTP servers on the Internet, which can be queried and enlarged distributed through botnets.221. X.X.2, iPhone such as multi-touch and other design elements are obviously affected.为了拯救她的兄弟姐妹，一位年轻女子承担了她的父亲和强大的实体，被称为游戏大师，谁把人类的恶魔阴谋，而她的物种赌博的结果。主要讲述一个纯真的湖南乡下姑娘来到陌生的大城市深圳，虽然到处碰壁历经磨难。但她抱着乐观的态度在异乡独自奋斗，凭着她的率真和坚韧，活力与勤奋，克服困难在压力与机遇并存的大都市里，找到自己的位置，感受到家族的温暖，找到了真正的爱情。剧中不仅巧妙展现乡村和城市生存环境的差异撞击出的冲突，更显现出在看似冰冷的都市里人性的温暖和逗趣互动的灵活呈现。Sentinel (Sentinel) process is used to monitor the working status of Master master server in redis cluster. When Master master server fails, it can switch between Master and Slave servers to ensure high availability of the system. It has been integrated into redis2.6 + version, and Redis Sentinel mode has stabilized after version 2.8. In general, it is also recommended to use later versions of Redis version 2.8 in production environment. Sentinel is a distributed system. You can run multiple sentinel processes in one architecture. These processes use gossip protocols to receive information about whether the Master master server is offline, and use Agreement Protocols to decide whether to perform automatic failover and which Slave to select as the new Master. Each Sentinel process will send messages to other Sentinel, Master and Slave regularly to confirm whether the other party is "alive". If it is found that the other party has not received a response within the specified configuration time (configurable), it will temporarily think that the other party has dropped, which is called "Subjective Down". English name: Subjective Down, SDOWN for short. Subjective Down,Which mode is the most powerful