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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,2. Procedures for self-funded business松冈茉优、三浦春马、三浦翔平、北村匠海主演新剧《钱断情始》(おカネの切れ目が恋のはじまり)曝光剧照！本剧由《凪的新生活》编剧大岛里美原创剧本，将于9月开播。 松冈茉优饰演在公司会计部工作的30岁左右女子九鬼玲子，她以“清贫”为口号而生活。有一天，中坚玩具制造商的名门子弟猿渡庆太因为过度浪费而从营业部被调到了会计部，玲子无意中被任命为庆太的指导人员。以此为契机，“清贫女子”和“浪费男子”的夏日故事开始了。 此外，三浦翔平饰演玲子的初恋对象、拥有公认会计师资格的早乙女健，北村匠海饰演猿渡庆太的后辈、“吝啬节约男子”板垣纯。沈心语她也喜欢《笑傲江湖》小说。　　　　迪恩（简森·阿克斯 Jensen Ackles 饰）和萨姆（贾德·帕达里克 Jared Padalecki 饰）终于找到父亲约翰（杰弗瑞·迪恩·摩根 Jeffrey Dean Morgan 饰），但为了救迪恩，约翰甘愿深入地狱，留下兄弟两个继续完成“猎人”职责。同时兄弟俩也了解到“黄眼恶魔”的存在，开始一路追踪这个最大仇人。二人解决了一个又一个超自然生物，兄弟二人的性格、理想分歧也一直存在，不时吵吵闹闹。但萨姆终究是黄眼恶魔的唯一目标，为了萨姆可以好好活下去，迪恩不惜和恶魔做交易，用自己的灵魂换回萨姆的生命……远远瞧见城门处站着无数守候的人影。