January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
30
｜
第
2
章
有必要使用长一点的提交时间间隔。不过不管怎样，还是建议使用最新版本的
Kafka
，让
消费者把偏移量提交到
Kafka
服务器上，消除对
Zookeeper
的依赖。
虽然多个
Kafka
集群可以共享一个
Zookeeper
群组，但如果有可能的话，不建议
把
Zookeeper
共享给其他应用程序。
Kafka
对
Zookeeper
的延迟和超时比较敏感，与
Zookeeper
群组之间的一个通信异常就可能导致
Kafka
服务器出现无法预测的行为。这样
很容易让多个
broker
同时离线，如果它们与
Zookeeper
之间断开连接，也会导致分区离
线。这也会给集群控制器带来压力，在服务器离线一段时间之后，当控制器尝试关闭一个
服务器时，会表现出一些细小的错误。其他的应用程序因重度使用或进行不恰当的操作给
Zookeeper
群组带来压力，所以最好让它们使用自己的
Zookeeper
群组。
2.8
总结
在这一章，我们学习了如何运行
Kafka
，同时也讨论了如何为
Kafka
选择合适的硬件，以
及在生产环境中使用
Kafka
需要注意的事项。有了
Kafka
集群之后，接下来要介绍基本
的客户端应用程序。后面两章将介绍如何创建客户端，并用它们向
Kafka
生产消息（第
3
章）以及从
Kafka
读取这些消息（第
4
章 ）。
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.