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Duplicating ≠ Decoupling!
... when conceptually coupled
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Splitting into services too early...
Trying to find boundaries...
Through behaviors ?
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Everything in the Shared Kernel must have:
the same meaning
the same representation
(structure & types)
the same invariants
the same business rules
⚠️for all the bounded-contexts which use the Shared Kernel⚠️
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Between teams, the Shared-Kernel should not be shared
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Anaphase
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To be continued...
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Josian Chevalier
SHODO
This is the way
Model Mitosis: a dynamic pattern to deal with model tensions
By Julien Topçu
Model Mitosis: a dynamic pattern to deal with model tensions
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.
