Gridshore

As many other developers, I’ve been used to the fat service layer and the anemic domain model of the transaction script pattern. In that programming model, immutability is pretty much as rare as a Dodo. However, I have been investigating the rich domain model pattern lately (as you can read in my previous post) and more importantly, a good migration path for “transaction script” developers to get acquainted with the rich Domain Model, a design pattern that has been heavily underrated (and misunderstood) by many.

In this post, I will explain some of the advantages that immutable domain objects bring us, while showing that some of the seemingly problematic side effects aren’t really that problematic.

Continue reading The power of immutability in a Rich Domain Model