October 2021
Beginner to intermediate
250 pages
7h 11m
Chinese
Content preview from 微服务与事件驱动架构
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为什么用事件驱动型微服务
｜
3
1.2
领域驱动设计和界限上下文
领域驱动设计由
Eric Evans
在他的同名图书《领域驱动设计：软件核心复杂性应对之道》
1
中提出，书中介绍了一些构建事件驱动型微服务所必需的概念。鉴于已有丰富的文章
（“
What
is the Domain Model in Domain Driven Design?
”）、图书（《实现领域驱动设计》）和
博客资源讨论了这一主题，本节仅做简单介绍。
以下概念支撑了领域驱动设计。
领域
某个企业所涉足并提供解决方案的问题空间。它涵盖了这个企业必须关注的所有内容，
包括规则、流程、想法、特定于业务的术语，以及所有跟这个问题空间相关的东西，
无
论该企业是否与之相关
。领域的存在跟企业是否存在无关。
子领域
子领域是主领域的一个部分。每个子领域都聚焦于一个特定的职责子集，并且通常反映
了企业的部分组织结构（如仓储、销售和工程部门）。一个子领域本身可视为一个领域。
跟领域一样，子领域也属于问题空间。
领域（子领域）模型
这是一种用于商业目的的对实际领域的抽象。在领域中对企业最重要的部分和属性被用
来生成模型。一个企业的主领域模型可通过其提供给客户的产品、客户与产品交互的接
口以及企业实现既定目标的各种流程和功能来识别。模型往往需要随着领域的改变和业
务优先级的变化而不断完善。领域模型是解决方案空间的一部分，因为它是企业用来解
决问题的框架。
界限上下文
界限上下文是与子领域相关的逻辑边界，包括输入、输出、事件、需求、流程和数据模
型。虽然在理想情况下，界限上下文会和子领域保持完全一致，但是历史遗留的系统 ...
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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.
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.