Entropy. You loose bits to a known source, which reduce entropy of the UUID. | Hacker News

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		madsbuch on July 21, 2023 \| parent \| context \| favorite \| on: Nanosecond timestamp collisions are common Entropy. You loose bits to a known source, which reduce entropy of the UUID.

dtech on July 21, 2023 | [–]

I do feel 74 bits per second is enough though. That would require 2^(74/2) = 137 billion UUIDs generated in a single second for a 50% chance of a single collision.

dralley on July 21, 2023 | [–]

128 bits is a lot of entropy to go around, though.

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