Book Image

Domain-Driven Design with Java - A Practitioner’s Guide

By : Premanand Chandrasekaran, Karthik Krishnan
Book Image

Domain-Driven Design with Java - A Practitioner’s Guide

By: Premanand Chandrasekaran, Karthik Krishnan

Overview of this book

Domain-Driven Design (DDD) makes available a set of techniques and patterns that enable domain experts, architects, and developers to work together to decompose complex business problems into a set of well-factored, collaborating, and loosely coupled subsystems. This practical guide will help you as a developer and architect to put your knowledge to work in order to create elegant software designs that are enjoyable to work with and easy to reason about. You'll begin with an introduction to the concepts of domain-driven design and discover various ways to apply them in real-world scenarios. You'll also appreciate how DDD is extremely relevant when creating cloud native solutions that employ modern techniques such as event-driven microservices and fine-grained architectures. As you advance through the chapters, you'll get acquainted with core DDD’s strategic design concepts such as the ubiquitous language, context maps, bounded contexts, and tactical design elements like aggregates and domain models and events. You'll understand how to apply modern, lightweight modeling techniques such as business value canvas, Wardley mapping, domain storytelling, and event storming, while also learning how to test-drive the system to create solutions that exhibit high degrees of internal quality. By the end of this software design book, you'll be able to architect, design, and implement robust, resilient, and performant distributed software solutions.
Table of Contents (17 chapters)
1
Part 1: Foundations
4
Part 2: Real-World DDD
12
Part 3: Evolution Patterns

Domain storytelling

Scientific research has now proven that learning methods that employ audiovisual aids assist both teachers and students in retaining and internalizing concepts very effectively. In addition, teaching what we have learned helps reinforce ideas and stimulate the formation of new ones.

Domain storytelling is a collaborative modeling technique that combines a pictorial language, real-world examples, and a workshop format to serve as a very simple, quick, and effective technique for sharing knowledge among team members. Domain storytelling is a technique invented and popularized by Stefan Hofer and Henning Schwentner, based on some related work done at the University of Hamburg called cooperation pictures.

A pictorial notation of the technique is illustrated in the following diagram:

Figure 4.1 – Domain storytelling summarized

A domain story is conveyed using the following attributes:

  • Actors: Stories are communicated from...