烂翻译系列之学习领域驱动设计——第二部分：战术设计

In Part I, we discussed the “what” and “why” of software: you learned to analyze business domains, identify subdomains and their strategic value, and turn the knowledge of business domains into the design of bounded contexts—software components implementing different models of the business domain.

在第一部分中，我们讨论了软件的“是什么”和“为什么”：你学会了分析业务领域，识别子领域及其战略价值，并将业务领域的知识转化为有界上下文的设计——实现业务领域不同模型的软件组件。

In this part of the book, we will turn from strategy to tactics: the “how” of software design:

在本书的这一部分，我们将从战略转向战术：如何设计软件：

• In Chapters 5 through 7, you will learn business logic implementation patterns that allow the code to speak the ubiquitous language of its bounded context. Chapter 5 introduces two patterns that accommodate a relatively simple business logic: transaction script and active record. Chapter 6 moves to more challenging cases and presents the domain model pattern: DDD’s way of implementing complex business logic. In Chapter 7, you will learn to expand the domain model pattern by modeling the dimension of time.   在第5章到第7章中，你将学习业务逻辑实现模式，这些模式允许代码使用其有界上下文的通用语言。第5章介绍了两种适用于相对简单的业务逻辑的模式：事务脚本和活动记录。第6章转向更具挑战性的案例，并介绍了领域模型模式：DDD实现复杂业务逻辑的方式。在第7章中，您将学习通过对时间维度进行建模来扩展领域模型模式。
• In Chapter 8, we will explore the different ways to organize a bounded context’s architecture: the layered architecture, ports & adapters, and CQRS patterns. You will learn the essence of each architectural pattern and in which cases each pattern should be used.  在第8章中，我们将探讨组织有界上下文架构的不同方式：分层架构、端口与适配器以及CQRS模式。你将学习每种架构模式的本质以及应在哪些情况下使用每种模式。
• Chapter 9 will discuss technical concerns and implementation strategies for orchestrating the interactions among components of a system. You will learn patterns supporting the implementation of bounded context integration patterns, how to implement reliable publishing of messages, and patterns for defining complex, crosscomponent workflows.  第9章将讨论用于协调系统组件之间的交互的技术关注点和实现策略。您将学习支持实现有界上下文集成模式的模式，如何实现可靠的发布消息，以及定义复杂的跨组件工作流的模式。