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Three, the use of star endorsements to pay attention to its periodicity, identityDDoS attacks are divided into three layers: attacker, master and agent, which play different roles in the attacks:Indonesia:成伟信（马浚伟 饰）子承父业，成为了一名律师，他和家人一起来到澳门游玩，偶然之中遇见了名为熊朗荞（陈法拉 饰）的钢管舞女郎。熊朗荞遇人不淑，被前男友拍下裸照以此要挟勒索，在正义感的趋势之下，成伟信向熊朗荞伸出了援手，帮助她脱离了前男友的魔爪。该剧讲述了抗战期间，抗联侦查员文龙集结各行各业的劳工组成抗日小分队，经过斗争，终于将安娜和日军暴行资料安全送达根据地的故事。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,