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

spring.tar.gz

spring1

spring1-copy

blank

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

A common evolution within a layered architecture is that layers are being skipped. We access the persistence layer directly from the web layer since we're only manipulating a single field of an entity, and for that, we need not bother the domain layer, right?

## Skipping layers

A common evolution within a layered architecture is that layers are being skipped. We access the persistence layer directly from the web layer since we're only manipulating a single field of an entity, and for that, we need not bother the domain layer, right?

# Skipping layers

Learn how layers can cause our software to become hard to test.

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

Grows Hard to Test

Skipping layers