出自黑马程序员https://www.bilibili.com/video/BV1yT411H7YK?p=9&vd_source=5435760e0ac9ec39ec5c78b22a75c88f
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CAP理论 https://baijiahao.baidu.com/s?id=1687697302388087668&wfr=spider&for=pc
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Redis脑裂可以采用min-slaves-to-write和min-slaves-max-lag合理配置尽量规避，但无法彻底解决，Redis脑裂最本质的问题是主从集群内部没有共识算法来维护多个节点的强一致性，它不像Zookeeper那样，每次写入必须大多数节点成功后才算成功，当脑裂发生时，Zookeeper节点被孤立，此时无法写入大多数节点，写请求会直接失败，因此Zookeeper才能保证集群的强一致性。
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原文链接：https://blog.csdn.net/Andrew_Chenwq/article/details/127497081
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影响性能永远是IO
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