But the random part of a UUIDv7 is 74 bits... larger than a 64-bit integer of ra... | Hacker News

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		tracker1 7 months ago \| parent \| context \| favorite \| on: Exploring PostgreSQL 18's new UUIDv7 support But the random part of a UUIDv7 is 74 bits... larger than a 64-bit integer of random values. Larger than many systems use in total when generating random keys for such things. Likely a larger number of values than the total number of comments here on HN over a couple decades. It's emphatically NOT guessable.

treve 7 months ago [–]

I don't think you'll find many recommendations for key lengths under 128 bits / 16 bytes these days.

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