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

Bootstrapping the application

To get started, let’s create a simple Spring Boot application. There are several ways to do this. You can always use the Spring starter application at https://start.spring.io to create this application. Here, we will make use of the Spring CLI to bootstrap the application.

Important Note

To install the Spring CLI for your platform, please refer to the detailed instructions at https://docs.spring.io/spring-boot/docs/current/reference/html/getting-started.html#getting-started.installing.

To bootstrap the application, use the following command:

This should create a file named lc-issuance-api.zip in the current directory. Unzip this file to a location of your choice and add a dependency on Axon Framework in the dependencies section of the pom.xml file:

  1. You may need to change the version. We are at version 4.5.3 at the time of writing this book.

Also, add the following dependency...