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　一片雪花飘过冰封的地球和列车，刚刚得到的自由又变得混乱，因为肖恩宾饰演的雪国列车创造者Wilford回来了，与Layton针锋相对。徐府之内，书房的地席上一个男子正闭目养神，此人年纪在五十岁左右，头发和胡须略微有些花白，或许是经常思考用智慧的缘故吧。可是他为什么通过试镜了？难道……周星河想到了那个邀请他试镜的青年。In the last article, we explained Redis' master-slave cluster mode in detail. In fact, the configuration of this cluster mode is very simple. It only needs to be configured on Slave's nodes. The configuration of Master's master node does not need to be changed. However, one thing is that the persistent configuration of Master and Slave nodes should be consistent as far as possible, otherwise there will be strange problems. Starting today, we will begin to talk about the second mode of Redis cluster mode. That is, the "Sentinel" mode, which was provided from version 2.6 of Redis, but the mode of this version was unstable at that time. The Sentinel mode did not stabilize until version 2.8 of Redis. In the production environment, if you want to use the Sentinel mode of Redis, you will try to use the version after version 2.8 of Redis. Whether it is master-slave mode or sentinel mode, both modes have a problem and cannot be expanded horizontally, and the high availability of these two modes will be limited by the memory of Master master node. Another point is that the configuration of Sentinel mode is not simple or even complicated, so neither mode is recommended in industrial scenes. If you want to use it, you must have solutions to related problems to avoid subsequent problems.《行尸走肉第四季》故事发展到第四季，监狱避难营中的人数不断地增长着，生活也渐渐步入了正轨，正当大家以为平静的日子终于来临之时，总督（大卫·莫瑞瑟 David Morrissey 饰）的逆袭让瑞克（安德鲁·林肯 Andrew Lincoln 饰）一行人再度陷入到了水深火热之中。　　同时也将一个没有妖魔化、漫画化的蒋氏家族，栩栩如生地描绘给世人评说。尤其值得令人期待的是，该剧围绕国民党军统特务多次妄图刺杀毛泽东为情节线，从城南庄敌机偷袭到西柏坡投毒、从香山兵变到玉泉山刺杀、从先农坛暗杀到炮轰天安门……Regular maintenance generally refers to the regular inspection and maintenance of hardware facilities. The range of detection here is as wide as possible. If the range is too large, Depending on asset type and asset range, Sampling tests are conducted, But all machines must be checked once a year, Replace the equipment with unstable performance or failure in time. Attention should be paid to monitoring the hardware equipment here. I have encountered the event of standby server failure for half a month. Let's not talk about it. Finally, maintenance should cover all equipment, regardless of network, security, server, basic power, air conditioning, UPS, etc.