Book Image

Get Your Hands Dirty on Clean Architecture

By : Tom Hombergs
Book Image

Get Your Hands Dirty on Clean Architecture

By: Tom Hombergs

Overview of this book

Building for maintainability is key to keeping development costs low and processes easy. The second edition of Get Your Hands Dirty on Clean Architecture is here to equip you with the essential skills and knowledge to build maintainable software. With this comprehensive guide, you’ll explore the drawbacks of conventional layered architecture and the advantages of domain-centric styles such as Robert C. Martin's Clean Architecture and Alistair Cockburn's Hexagonal Architecture. Then, you’ll dive into hands-on explanations on how to convert hexagonal architecture into actual code. You'll learn in detail about different mapping strategies between the layers of hexagonal architecture and discover how to assemble the architectural elements into an application. Additionally, you’ll understand how to enforce architecture boundaries, which shortcuts produce what types of technical debt, and how, sometimes, it is a good idea to willingly take on those debts. By the end of this second edition, you'll be armed with a deep understanding of the hexagonal architecture style and be ready to create maintainable web applications that save money and time.
Table of Contents (13 chapters)

Experience is Queen

We are creatures of habit. Habits automate decisions for us so we don't have to spend time on them. If there's a lion running toward us, we run. If we build a new web application, we use the layered architecture style. We have done it so often in the past that it has become a habit.

I'm not saying that this is necessarily a bad decision. Habits are just as good at helping us to make the right decision as they are at making a bad one. I'm saying that we are doing what we are experienced in. We are comfortable with what we have done in the past, so why should we change anything?

So, the only way to make an educated decision about an architecture style is by having experience in different architecture styles. If you are unsure about the hexagonal architecture style, try it out on a small module of the application that you are currently building. Get used to the concepts and get comfortable. Apply the ideas in this book, modify them, and add your own ideas...