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Zookeeper源码2-ZAB协议之Leader选举 | Reactor
source link: https://blog.reactor.top/2018/03/16/zookeeper%E6%BA%90%E7%A0%812-ZAB%E5%8D%8F%E8%AE%AE%E4%B9%8BLeader%E9%80%89%E4%B8%BE/?
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zookeeper源码2-ZAB协议之Leader选举ZAB协议ZooKeeper服务器会在本地处理只读请求（exists、getData和getChildren）。假如一个服务器接收到客户端的getData请求，服务器读取该状态信息，并将这些信息返回给客户端。因为服务器会在本地处理请求，所以ZooKeeper在处理以只读请求为主要负载时，性能会很高。我们还可以增加更多的服务器到ZooKeeper
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