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A comment on Avoid UUIDv4 Primary Keys. Parent comment

Re:Avoid UUIDv4 Primary Keys by mkleczek on Monday December 15, 2025 @11:57AM (#46277017)
Network protocol designers know better and by default embed protocol version number in message format spec.

I guess you can assign 3-4 bits for identifier version number as well.

And yes - for long living data dealing with compatibility issues is inevitable so you have to take that into account from the very beginning.

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Re:Avoid UUIDv4 Primary Keys by vrighter on Tuesday December 16, 2025 @01:11AM (#46285335)
when I designed network protocols this is exactly what I did. I also did so in file formats had to create. But a database primary kea is not somewhere where that can be easily done.
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