Book Image

Domain-Driven Design with Golang

By : Matthew Boyle
5 (1)
Book Image

Domain-Driven Design with Golang

5 (1)
By: Matthew Boyle

Overview of this book

Domain-driven design (DDD) is one of the most sought-after skills in the industry. This book provides you with step-by-step explanations of essential concepts and practical examples that will see you introducing DDD in your Go projects in no time. Domain-Driven Design with Golang starts by helping you gain a basic understanding of DDD, and then covers all the important patterns, such as bounded context, ubiquitous language, and aggregates. The latter half of the book deals with the real-world implementation of DDD patterns and teaches you how to build two systems while applying DDD principles, which will be a valuable addition to your portfolio. Finally, you’ll find out how to build a microservice, along with learning how DDD-based microservices can be part of a greater distributed system. Although the focus of this book is Golang, by the end of this book you’ll be able to confidently use DDD patterns outside of Go and apply them to other languages and even distributed systems.
Table of Contents (13 chapters)
Part 1: Introduction to Domain-Driven Design
Part 2: Real -World Domain-Driven Design with Golang

Building a recommendation system

To ensure we can focus on the important pieces of building a microservice using DDD principles, I have provided some sample code for this chapter. It’s available here: In the repository, you will find an already completed Go program called partnerships. This is an API that gives back a response in the preceding format. However, to make it represent the system described previously, 30% of all requests will fail. You can run this program by running docker-compose up.

Once running, you can type the following into your terminal:

curl --location --request GET 'http://localhost:3031/partnerships?location=UK'

If you do this a few times, you will notice you get one of two responses back. One is a 500 response, with no body. The other is this:

    "availableHotels": [