DDD Europe 2023 - Program

Model Mitosis: a dynamic pattern to deal with model tensions

DDD Foundations - Talk


Tickets

Speakers

Julien Topçu and Josian Chevalier

Julien TopçuJosian Chevalier
Description

Just as models should be iterative, strategic design should change when the context and our understanding of the problem evolve. As a model grows to solve more problems, it becomes less supple in its ability to evolve. Tensions arise within the model that struggles to stay coherent.

Eventually it reaches a critical mass and becomes a big ball of mud.

How do we know when it’s time to let new models emerge? How do we carry on the decision to split a model? How can we handle the progressive differentiation of our models while avoiding unnecessary coupling? It’s not as easy as a clean axe cut in the middle, finding the right boundaries is hard.

We would like to introduce the Model Mitosis, a dynamic pattern used to split a model into multiple ones that will get shaped and decoupled iteratively.

About Julien Topçu

I like to craft software with high business value using techniques from Domain-Driven Design, all powered by Xtreme Programming in the Kanban #NoEstimates philosophy. Member of the OWASP foundation, I evangelise on application security techniques in order to avoid being hacked properly.

About Josian Chevalier

Software Craftsman at Shodo, I specialize in Domain Driven Design. I strive to improve my approach of software development and my knowledge, as well as raise awareness about software quality among developers.