Really fun thought experiment. What if we need truly unique IDs at universe scale? Several options are explored.

Interesting idea, trying to bridge the best of both UUID options.

Forced to use UUID as primary key in a table? Then make sure to use them properly to not kill the performance more than necessary. Ideally use something else though.

Interesting set of tricks around UUIDs to make them easier to manipulate.

It might not be as clear cut as sometimes assumed. With the right index UUIDv4 can still do as key in databases.

Interesting property of the newer UUIDv7 spec.