If you do that, it expands your test matrix quadratically.
So, it makes sense if you have infinite testing budgets.
Personally, I prefer exhaustively testing the upgrade path, and investing in reducing the time it takes to push out a hot fix. Chicken bits are also good.
I haven’t heard of any real world situations where supporting downgrades of persistent formats led to best of class product stability.
It's why you always have a rollback plan. Every `up` needs to a `down`.
If you do that, it expands your test matrix quadratically.
So, it makes sense if you have infinite testing budgets.
Personally, I prefer exhaustively testing the upgrade path, and investing in reducing the time it takes to push out a hot fix. Chicken bits are also good.
I haven’t heard of any real world situations where supporting downgrades of persistent formats led to best of class product stability.
Would love to hear of an example.