Designing Hexagonal Architecture with Java

person icon Packt Publishing

Designing Hexagonal Architecture with Java

Designing Hexagonal Architecture with Java

person icon Davi Vieira

ebook icon Packt Publishing

language icon Language - English

updated on icon Updated on Jan, 2023

architecture icon Java,Development,IT & Software


This eBook includes

Formats : PDF (Read Only)

Pages : 460

ISBN : 9781801810296

Language : English

About the Book

Book description

A practical guide for software architects and Java developers to build cloud-native hexagonal applications using Java and Quarkus to create systems that are easier to refactor, scale, and maintain

Key Features

  • Learn techniques to decouple business and technology code in an application
  • Apply hexagonal architecture principles to produce more organized, coherent, and maintainable software
  • Minimize technical debts and tackle complexities derived from multiple teams dealing with the same code base

Book Description

Hexagonal architecture enhances developers' productivity by decoupling business code from technology code, making the software more change-tolerant, and allowing it to evolve and incorporate new technologies without the need for significant refactoring. By adhering to hexagonal principles, you can structure your software in a way that reduces the effort required to understand and maintain the code.

This book starts with an in-depth analysis of hexagonal architecture's building blocks, such as entities, use cases, ports, and adapters. You'll learn how to assemble business code in the Domain hexagon, create features by using ports and use cases in the Application hexagon, and make your software compatible with different technologies by employing adapters in the Framework hexagon. Moving on, you'll get your hands dirty developing a system based on a real-world scenario applying all the hexagonal architecture's building blocks. By creating a hexagonal system, you'll also understand how you can use Java modules to reinforce dependency inversion and ensure the isolation of each hexagon in the architecture. Finally, you'll get to grips with using Quarkus to turn your hexagonal application into a cloud-native system.

By the end of this hexagonal architecture book, you'll be able to bring order and sanity to the development of complex and long-lasting applications.

What you will learn

  • Find out how to assemble business rules algorithms using the specification design pattern
  • Combine domain-driven design techniques with hexagonal principles to create powerful domain models
  • Employ adapters to make the system support different protocols such as REST, gRPC, and WebSocket
  • Create a module and package structure based on hexagonal principles
  • Use Java modules to enforce dependency inversion and ensure isolation between software components
  • Implement Quarkus DI to manage the life cycle of input and output ports

Who this book is for

This book is for software architects and Java developers who want to improve code maintainability and enhance productivity with an architecture that allows changes in technology without compromising business logic, which is precisely what hexagonal architecture does. Intermediate knowledge of the Java programming language and familiarity with Jakarta EE will help you to get the most out of this book.

Designing Hexagonal Architecture with Java

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Author Details

Packt Publishing

Packt Publishing

Founded in 2004 in Birmingham, UK, Packt's mission is to help the world put software to work in new ways, through the delivery of effective learning and information services to IT professionals.

Working towards that vision, we have published over 6,500 books and videos so far, providing IT professionals with the actionable knowledge they need to get the job done - whether that's specific learning on an emerging technology or optimizing key skills in more established tools.

As part of our mission, we have also awarded over $1,000,000 through our Open Source Project Royalty scheme, helping numerous projects become household names along the way.

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