October 2021
Beginner to intermediate
250 pages
7h 11m
Chinese
Content preview from 微服务与事件驱动架构
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.
226
｜
第
17
章
17.2
业务领域和界限上下文
业务在特定的领域内执行操作，这个领域又可以分解为几个子领域。业务问题的解决方案
是由界限上下文定义的，界限上下文标识了边界，这些边界包括与子域相关的输入、输
出、事件、需求、流程和数据模型。
可以将微服务实现构建成与这些界限上下文保持一致。由此产生的服务和工作流可与问题
和业务需求保持一致。通用数据通信层确保了微服务实现可以足够灵活以适应业务领域和
随后的界限上下文的变化，从而有助于促进这些一致性。
17.3
可共享的工具和基础设施
事件驱动型微服务需要对允许其大规模运行的系统和工具进行投资，这种投资被称为微服
务税。事件代理是系统的核心，因为它提供了服务之间的基本通信，并且免除了每个服务
管理自己的数据通信解决方案的责任。
微服务架构放大了围绕创建、管理和部署应用程序的所有问题，并受益于这些过程的标准
化和流水线化。随着微服务数量的增长，这一点变得更为关键，因为虽然每个新的微服务
都会产生开销，但非标准化的微服务可能会比遵循协议的微服务产生更大的开销。
构成微服务税的基本服务如下。
•
事件代理
• schema
注册表和数据探测服务
• CMS
•
持续集成、交付和部署服务
•
监控和日志服务
支付微服务税不太可能是一个全有或全无的过程。组织通常会从事件代理服务或
CMS
开
始，然后根据需要添加其他服务。幸运的是，一些计算服务提供商，比如谷歌、微软和亚
马逊，已经创建了显著降低开销的服务。你必须权衡自己的方案，在将这些业务外包给服
务提供商或在内部构建自己的系统之间做出选择。 ...
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.