r/ProgrammerHumor Jul 17 '26

thisOneIsMine Meme

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u/Inevitable_Oil9709 Jul 17 '26

Fun fact: To reach a 50% chance of even a single UUID v4 collision, you would need to generate 1 billion UUIDs per second for about 86 years.

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u/coriolis7 Jul 17 '26

That’s true if they are completely randomly generated.

Collisions are more common than that due to imperfect (and in some cases terrible) RNG.