Get Your Hands Dirty on Clean Architecture by Tom Hombergs.png

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This course will teach you all about creating a web application in the Hexagonal Architecture style. Hexagonal Architecture promotes the separation of concerns by encapsulating logic in different layers of the application. This enables a higher level of isolation, testability, and control over your business specific code. 

You will learn how to design software modules and complete applications in a clean and maintainable manner, while also learning how to advocate for a certain technique given your application and constraints.

By the end of this course, you will have a greater understanding of how to implement software architecture, a key skill for any senior developer.

Hexagonal Software Architecture for Web Applications

To instantiate the graph of stateless objects that our application needs to run

To implement the Single Responsibility Principle

To connect incoming adapters with outgoing adapters

What do we need a central "configuration component" for?

What do we need a central “configuration component” for?

It is only suitable for very small applications.

Which of the following is true for plain code assembly?

Which of the following is true for plain code assembly?

We might instantiate classes that we don't need.

It is only suitable for very large applications.

Which of the following is true for Spring's component scanning?

Which of the following is true for Spring’s component scanning?

Take a quiz to test your understanding of how you can assemble your application.

Before We Begin

What's Wrong with Layers?

Inverting Dependencies

Organizing Code

Implementing a Use Case

Implementing a Web Adapter

Implementing a Persistence Adapter

Testing Architecture Elements

Mapping Between Boundaries

Assembling the Application

Enforcing Architecture Boundaries

Taking Shortcuts Consciously

Assessment

Conclusion

Appendix

Quiz: Assembling the Application