Domain-Driven Design Reference: Definitions and Pattern Summaries

Domain-Driven Design (DDD) is an approach to software development for complex businesses and other domains. DDD tackles that complexity by focusing the team's attention on knowledge of the domain, picking apart the most tricky, intricate problems with models, and shaping the software around those models. Easier said than done! The techniques of DDD help us approach this systematically.
This reference gives a quick and authoritative summary of the key concepts of DDD. It is not meant as a learning introduction to the subject. Eric Evans' original book and a handful of others explain DDD in depth from different perspectives. On the other hand, we often need to scan a topic quickly or get the gist of a particular pattern. That is the purpose of this reference. It is complementary to the more discursive books.
The starting point of this text was a set of excerpts from the original book by Eric Evans, Domain-Driven-Design: Tackling Complexity in the Heart of Software, 2004 - in particular, the pattern summaries, which were placed in the Creative Commons by Evans and the publisher, Pearson Education. In this reference, those original summaries have been updated and expanded with new content.
The practice and understanding of DDD has not stood still over the past decade, and Evans has taken this chance to document some important refinements. Some of the patterns and definitions have been edited or rewritten by Evans to clarify the original intent. Three patterns have been added, describing concepts whose usefulness and importance has emerged in the intervening years. Also, the sequence and grouping of the topics has been changed significantly to better emphasize the core principles.
This is an up-to-date, quick reference to DDD.

Eric Evans is the author of Domain-Driven Design: Tackling Complexity in the Heart of Software, 2004. He coined the term domain-driven design (DDD) and laid out its principles in that book. Since then he has continued to focus his energies in the area of DDD, teaching and continuing to apply DDD on real projects, as well as collaborating with other leaders in both the DDD community and the broader software development community.

領域驅動設計（Domain-Driven Design，簡稱DDD）是一種針對複雜企業和其他領域的軟體開發方法。DDD通過專注於對領域的了解，分析最棘手、最複雜的問題並圍繞這些模型來塑造軟體，以應對這種複雜性。說起來容易做起來難！DDD的技術幫助我們以系統的方式進行這種工作。

這份參考資料提供了DDD的關鍵概念的快速且權威的摘要。它並不是一本學習介紹性的書籍。Eric Evans的原著以及其他幾本書從不同的角度深入解釋了DDD。另一方面，我們經常需要快速掃描一個主題或者了解一個特定模式的要點。這就是這份參考資料的目的。它是對那些更為詳盡的書籍的補充。

這份文本的起點是Eric Evans的原著《Domain-Driven-Design: Tackling Complexity in the Heart of Software, 2004》的一些摘錄，特別是模式摘要，這些摘要由Evans和出版商Pearson Education在創意共用許可下提供。在這份參考資料中，這些原始摘要已經被更新和擴充了新內容。

在過去的十年中，DDD的實踐和理解並未停滯不前，Evans利用這個機會記錄了一些重要的改進。一些模式和定義已經被Evans編輯或重寫，以澄清最初的意圖。在這些年間，還新增了三個模式，描述了在實踐中逐漸浮現出的有用性和重要性的概念。此外，主題的順序和分組也發生了顯著變化，以更好地強調核心原則。

這是一份最新的DDD快速參考資料。

Eric Evans是《Domain-Driven Design: Tackling Complexity in the Heart of Software, 2004》的作者。他創造了領域驅動設計（DDD）這個術語，並在該書中闡述了其原則。自那時以來，他一直專注於DDD領域，教學並在實際項目中持續應用DDD，並與DDD社區和更廣泛的軟體開發社區的其他領袖合作。