January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
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100
｜
第
6
章
间差。然后，你需要使用工具来比较生产者和消费者记录的消息数量（为了确保没有丢失
消息），确保这两者之间的时间差不会超出我们允许的范围。为了做到更好的监控，我们
可以增加一个“监控消费者”，这个消费者订阅一个特别的主题，它只进行消息的计数操
作，并把数值与生成的消息数量进行对比，这样我们就可以在没有消费者的情况下仍然能
够准确地监控生产者。这种端到端的监控系统实现起来很耗费时间，具有一定挑战性。据
我们所知，目前还没有开源的实现。
Confluent
提供了一个商业的实现版本，它是
Confluent
Control Center
的一部分。
6.7
总结
正如我们在本章开头所说的，可靠性并不只是
Kafka
单方面的事情。我们应该从整个系统
层面来考虑可靠性问题，包括应用程序的架构、生产者和消费者
API
的使用方式、生产
者和消费者的配置、主题的配置以及
broker
的配置。系统的可靠性需要在许多方面作出权
衡，比如复杂性、性能、可用性和磁盘空间的使用。掌握
Kafka
的各种配置和常用模式，
对使用场景的需求做到心中有数，你就可以在应用程序和
Kafka
的可靠性程度以及各种权
衡之间作出更好的选择。
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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.