January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
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初识
Kafka
｜
3
度量
用户界面
前端
服务器
前端
服务器
数据库
服务器
数据库
副本
聊天
服务器
购物车
后端
服务器
发布与订阅
度量指标
指标分析 活动监控
数据库
监控器
图 1-3：度量指标发布与订阅系统
1.1.2
独立的队列系统
在你跟度量指标打得不可开交的时候，你的一个同事也正在跟日志消息奋战。还有另一个
同事正在跟踪网站用户的行为，为负责机器学习开发的同事提供信息，同时为管理团队生
成报告。你和同事们使用相同的方式创建这些系统，解耦信息的发布者和订阅者。图
1-4
所示的架构包含了
3
个独立的发布与订阅系统。
前端
服务器
前端
服务器
数据库
服务器
数据库
副本
聊天
服务器
购物车
后端
服务器
发布与订阅
度量指标
发布与
订阅日志
发布与
订阅跟踪
度量
用户界面
指标分析
活动监控
数据库
监控器
日志搜索 安全分析 离线处理
图 1-4：多个发布与订阅系统
这种方式比直接使用点对点的连接（图
1-2
）要好得多，但这里有太多重复的地方。你的
公司因此要为数据队列维护多个系统，每个系统又有各自的缺陷和不足。而且，接下来可
能会有更多的场景需要用到消息系统。此时，你真正需要的是一个单一的集中式系统，它
可以用来发布通用类型的数据，其规模可以随着公司业务的增长而增长。
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and much more.
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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.