Comment by jordiburgos

1 day ago

Please, do not use b6133fd6-70fe-4fe3-bed6-8ca8fc9386cd, I checked my database and I was using it already.

18 comments

jordiburgos

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rich_sasha  1 day ago

I always thought generating UUIDs at random was insane. I now only use LLMs. The prompt is: "generate a UUID. Make sure no one ever used it anywhere in their code or database. Check your work and think hard about each step. Do not output any reasoning or plain English, only th UUID itself".

You're welcome.

  • mh2753  1 day ago

    Actually asking ChatGPT this query led it giving me this UUID "550e8400-e29b-41d4-a716-446655440000" which happens to be a very common example UUID

    • smokel  18 hours ago

      Actually, asking this multiple times to ChatGPT gives me different UUIDs every time, and it checked with a web search that they are not found in public data.

mittermayr  1 day ago

I knew it, we're all getting the same cheap UUIDs and the good ones are reserved for the big dogs.

  • Galanwe  1 day ago

    uuid.uuidv4() recently switched to "adaptive entropy" instead of "xmax entropy" in an effort to save costs on non-premium users.

robshep  1 day ago

I'm using 16b55183-1697-496e-bc8a-854eb9aae0f3 and probably some more too. I suppose if we all post our list here, then we can all check for duplicates?

  • mittermayr  1 day ago

    We should all send our already-generated UUIDs to a shared database, we could just put it on Supabase with a shared username/password posted on HN, so we can all ensure that after generating a UUIDv4 locally, it's not used by anyone else. If it's in the database, we know it's taken.

    It's a super simple mechanism, check in common worldwide UUID database, if not in there, you can use it. Perhaps if we use a START TRANSACTION, we could ensure it's not taken as we insert. But that's all easy, I'll ask Claude to wire it up, no problem.

    • broken-kebab  1 day ago

      But then I will claim I have already used all the UUIDs in my spreadsheets, and my lawyer will send cease&desist letters to every database.