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消息不胫而走，正在传播往天下各地。1. The functions of a class need to be extended.What is the legendary Sous VideSentinel (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,师傅老铁是那种让你觉得他生来就应该是师傅的人！大家这样高兴，苞谷也十分兴奋，用手摸摸口袋，忽然蹙眉道：哨子。一个至死不渝的誓言，一段生死离别的爱情，编织着一个爱情故事！ 　　一个关于信仰的真实传说，一个关于爱情的凄美童话，一曲关于生命的悲惨挽歌。 　　该剧围绕两男一女的情感纠葛展开故事：孤儿欧阳、父母被打倒的闻汐与寄养在外婆家的叶雨三个人青梅竹马，分别之际叶雨留给了欧阳一份纯真的誓言“长大了我来找你，别忘了”。成年后的三人境遇迥异，失去唯一的亲人叔叔的欧阳终于考上了大学，进入省城后先后重逢了已是高干子弟的闻汐和富家女叶雨。艰难养活自己的欧阳在得知闻汐也钟情与叶雨时，自尊心驱使欧阳拒绝了叶雨的誓言。毕业后欧阳被分配到边远的小镇，几年后他重回省城，落魄谋生。在遭遇一场火并案后，一切真相大白，最终欧阳和叶雨重逢在了海边……