The behavior doesn’t change. The implementation does. Those are orthogonal. And yes I see it every day. The collection interfaces in Java have countless swappa

The behavior doesn’t change. The implementation does. Those are orthogonal. And yes I see it every day. The collection interfaces in Java have countless swappable implementations. Those are basically getters and setters on a vector. I also had to change entity storage to columnar for a project. Did that. Never had to change a line of code outside the entities.