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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,米娜 ，一位失去了她心爱的儿子的单身母亲 这种损失成为她生命中的一个重要转折点。 米娜患了失眠症，变成了一种噩梦病。 有一天，一个男孩告诉他，他是一只手臂,那就是nuttachart nimriyawat。那是她的儿子，谁住在一个新的身体，回来找他。公元2008年5月12日14时28分，中国四川省汶川县发生里氏8级大地震，强烈的地震甚至波及全国十几个省，而位于震中附近的周边城镇则蒙受巨大灾难。郑老太太鼻子里轻哼了一声道：老太婆可不敢进这门。明朝时期有一名女飞贼飞鹰（米雪 饰）劫富济贫，神捕陆战（元华 饰）也被她的风姿吸引，两人结合后生下一女，名叫陆拾义（周丽淇 饰），飞鹰也就此在江湖销声匿迹。长大后的拾义成为了一名女捕快，处处为百姓伸张正义，却被衙门中的男人看轻。刚好新上任的县令水东流整治官员中腐败现象，便与拾义联手破解了多宗奇案。就在这个时候发生的一宗谋杀案，嫌疑犯锁定在飞鹰身上。母亲隐瞒多年的身份终于被拾义妹知道了。拾义妹为了帮飞鹰洗脱罪名，决定与水东流一起寻找真凶。闵天赐（欧阳震华 饰）是一名成功的市场调查经理，生活舒适写意，没想到事业上遇到低潮，一名八岁的男孩前来他做父亲，原来那是他与前妻的孩子。令这位一向不喜孩子的钻石王老五措手不及。照顾孩子的事令他一筹莫展，幸好好友金美钻（蒙嘉慧 饰）帮忙想办法，令原本斗气的他们渐渐变成了一对好朋友，最后更发展成了一对恋人。与儿子的关系越来越好，他也发现拥有孩子并不是一件可怕的事，他深深享受处在这样温馨的气氛里。