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)
Part 1: Foundations
Part 2: Real-World DDD
Part 3: Evolution Patterns


In this chapter, we covered a series of commonly used architecture patterns and how we can practice DDD when working with them. We also looked at common pitfalls and gotchas that we may need to be cognizant of when using these architectures. We also looked at popular programming paradigms and their influence on the tactical elements of DDD.

Additionally, you should have an appreciation of the various architecture styles that you need to employ when coming up with a solution. In addition, you should have an understanding of how DDD can play a role, no matter which style of architecture you choose to adopt.

In the next section, we will look to apply all we have learned in this and previous chapters to a real-world business use case. We will apply both the strategic and tactical patterns of DDD to break a complex domain into subdomains and bounded contexts and iteratively build a solution, using technologies that are based on the Java programming language.