Implementing DDD & ensuring domain model purity
Protecting our domain model and keeping it pure is going to take some hard work and rely heavily on our use of:
- a Layered Architecture, most formally understood as the clean architecture (for separation of concerns)
- Dependency Inversion (to keep inner layer code testable)
- The Dependency Rule (to enforce the use of Dependency Inversion)

A layered…
Howdy 👋
This is an online wiki about the main topics over the last 40 years of software design, architecture & testing. It was created by Khalil Stemmler.
This wiki's mission is to help eliminate the unknown unknowns, helping you get up to speed on the best practices and principles to write testable, flexible, and maintainable code.
I created this wiki while I was connecting the dots on my own path. You can read more about that learning journey in the introduction
Already bought it?
If you’ve already purchased the book, click here to re-send your link. You can read the online wiki or download a copy of the book in PDF, EPUB, and Kindle versions.
Want access?
You can read the intro to the book for free and visit solidbook.io to buy the book/wiki! To get an idea of my writing, read some of my best free content here and here.
Need help?
Something not working? Have a question? You can reach me on at khalil@khalilstemmler.com.