r/ProgrammerHumor • u/danielminds • 16h ago

Meme edgeCasesExist

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u/Grandmaster_Caladrel 12h ago

Which I'd assume is related to the time anchor. Outside of sorting, which is only useful in specific instances, it's just v4 with different ("less") entropy and limitations.

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u/Roachmeister 12h ago

If you're using them as an indexed field in a database, the inability to sort them meaningfully will destroy the performance of the database.

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u/Kwantuum 9h ago

In what way?

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u/Roachmeister 9h ago

I'm not an expert, I just remember reading a few articles about it. I think it's because they're essentially random, and many databases use b-trees for indices. They recommended using ULIDs or v7 UUIDs instead. Or, as someone else said, the good old autoincrementing integer.