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EventPool []/chickenIn 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.1. There are two options to manage the creation and destruction of state objects. The first is to create and then destroy state objects only when they are needed, and the other is to create all state objects from the beginning and never destroy them. If the state object is relatively large, the first method can be used to save memory, which can avoid creating some objects that will not be used and recycle them in time. However, if the state changes frequently, it is best to create all these state objects in the first place, and there is no need to destroy them, because they may be used again soon.北宋末年，辽国大举进犯中原，民不聊生。徽宗皇帝不理朝政，拜宠臣童贯为护国大将军，联金抗辽。童贯不仅不通战略，更为私欲，以至连连败阵，宋军与金军貌合神离，遭金军挖苦讽刺。真定军宣抚大人刘韐将军麾下的敢战士队长岳飞不服气，带张宪、牛皋、徐庆、王贵仅八百勇士，给了金将跖拔耶乌一个下马威，证明了大宋敢战士不是累卵！黄龙失利后辽帝亲征，十万大军蜂拥而至。岳飞寡不敌众被献给辽帝。识破跖拔耶乌诡计，岳飞脱险，快马驰去！中途，刘韐伤重而亡。时逢岳飞父亲病故，岳飞回乡守孝。为赚钱偿还父亲在世之时的汤药费，岳飞到大宋三朝元老韩肖胄的“荣事堂”做护院。　　看点：《生死蜕变》导演以拍摄警匪剧为人们所熟知徐庆东所拍摄《刑警风云》、《重案六组》等剧均以丰富题材、紧凑节奏、写实手法为大家津津乐道而该剧几位演员也导演授意下诠释了一个又一个性格迥异人物避免了以往公安题材电视剧里警察高、大、全形象继续以真实性格塑造角色让脸谱化公安干警不再出现同时该剧秉承了《重案六组》快节奏、大写实风格导演叙述方式上再次尝试新方法不再采用系列剧故事情节改用一条主线情节上突出悬疑色彩此外该剧外景拍摄大连完成海边美景将为该剧增色不少 。大山子矿务局副局长马扬一个条陈上呈中央，就把省委书记贡开宸送进中南海，他专程向总书记汇报了本省当前的形势与问题。因此，马扬决定辞去职务，携妻女回原籍工作。机修厂锅炉爆炸事件后，贡开宸立即扣下马扬，不计前嫌地破格委予重用，他把大型国有企业存亡问题和人事制度改革摆到了各位省委领导的面前。在处理机修厂锅炉爆炸事件中，贡开宸认为大山子市的四套班子都在互相打马虎眼，他对大山子矿务局局长夏墨行为极不满意，和老书记潘祥民一道商量“锅炉爆炸事件”后的综合治理解决办法。一场别开生面的专题答辩会召开，马扬让大山子矿务局三十万职工下岗的精彩答辩，引起了很大震动，却令贡开宸和潘祥民彻夜未眠。