November 2022
Beginner to intermediate
346 pages
11h
Chinese
Content preview from Kafka权威指南（第2版）
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跨集群数据镜像
｜
193
集群链接
集群链接是
Confluent
Platform 6.0
的一个预览特性，它直接将集群间复制功能放在了
Confluent Server
中
。集群链接将集群内的
broker
间复制协议用在了集群间复制上，可
以跨集群执行带偏移量迁移的数据复制，无须偏移量转换就可以实现客户端无缝迁移。
主题配置信息、分区、消费者偏移量和
ACL
都可以在两个集群之间保持同步
，以便在
发生灾难时实现低
RT
O
的故障转移。集群链接定义了从一个源集群到一个目标集群的
定向流。目标集群的首领
broker
从对应的源首领那里获取分区数据
，目标集群的跟随
者使用
Kafka
的标准复制机制从本地首领那里复制数据
。目标集群的镜像主题会被标记
为只读，以防止本地生产者将数据生成到这些主题上，从而确保镜像主题在逻辑上与源
主题保持一致。
集群链接提供了运维上的便利性，无须用到其他集群（如
Connect
集群）
，并且比外部
工具更加高效，因为它避免了镜像期间的解压缩和再压缩。与
MRC
不
同，集群链接没
有同步复制选项，而且在进行客户端故障转移时需要手动重启客户端。不过，集群链接
可用于网络不可靠且高延迟的远程数据中心，它只在数据中心之间复制一次数据，从而
减少了跨数据中心的流量。它适用于迁移集群和需要共享主题的场景。
10.5
小结
从解释为什么需要多个
Kafka
集群开始，本章首先介绍了几种从简单到复杂的多集群架
构。然后介绍了
Kafka
故障转移的实现细节
，并比较了当前几种可用的解决方案。接下来
介绍了一些可用的工具，从
MirrorMaker ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.