When are you truly forced to use UUID as part of the design?

Question

I don\'t really see the point of UUID. I know the probability of a collision is effectively nil, but effectively nil is not even close to impossible.

Answer 1

UUIDs embody all of the bad coding practices associated with global variables, only worse, since they are superglobal variables which can be distributed over different pieces of kit.

Recently hit such an issue with the replacement of a printer with an exact replacement model, and found that none of the client software would work.