Saturday, 9 May 2026

New best story on Hacker News: Ask HN: We just had an actual UUID v4 collision...

Ask HN: We just had an actual UUID v4 collision...
421 by mittermayr | 319 comments on Hacker News.
I know what you're thinking... and I still can't believe it, but... This morning, our database flagged a duplicate UUID (v4). I checked, thinking it may have been a double-insert bug or something, but no. The original UUID was from a record added in 2025 (about a year ago), and today the system inserted a new document with a fresh UUIDv4 and it came up with the exact same one: b6133fd6-70fe-4fe3-bed6-8ca8fc9386cd We're using this: https://ift.tt/hA0jWKt I thought this is technically impossible, and it will never happen, and since we're not modifying the UUIDs in any way, I really wonder how that.... is possible!? We're literally only calling: import { v4 as uuidv4 } from "uuid"; const document_id = uuidv4(); ... and then insert into the database, that's it. Additionally, the database only has about 15.000 records, and now one collision. Statistically... impossible. Has that ever happened to anyone?! What in the...

New best story on Hacker News: Internet Archive Switzerland

Internet Archive Switzerland
474 by hggh | 70 comments on Hacker News.
https://ift.tt/VeYd30T

New best story on Hacker News: An Introduction to Meshtastic

An Introduction to Meshtastic
494 by ColinWright | 182 comments on Hacker News.


New best story on Hacker News: A recent experience with ChatGPT 5.5 Pro

A recent experience with ChatGPT 5.5 Pro
543 by _alternator_ | 397 comments on Hacker News.
https://twitter.com/wtgowers/status/2052830948685676605 https://ift.tt/0gMxuZb

New best story on Hacker News: David Attenborough's 100th Birthday

David Attenborough's 100th Birthday
635 by defrost | 125 comments on Hacker News.


Friday, 1 May 2026

New best story on Hacker News: Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables

Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables
461 by sleepingNomad | 133 comments on Hacker News.
USB-C cables can be a mess. One cable charges at 5W, another does 100W and Thunderbolt 4, and they look identical in the drawer. WhatCable sits in your menu bar and reads the cable data your Mac already has access to. Plug in a cable and it tells you in plain English what it can actually do: charging wattage, data speed, display support, Thunderbolt, etc. Built in Swift/SwiftUI. Open source, free, no tracking. GitHub: https://ift.tt/eFgcki7

New best story on Hacker News: Spain's parliament will act against massive IP blockages by LaLiga

Spain's parliament will act against massive IP blockages by LaLiga
507 by akyuu | 223 comments on Hacker News.


New best story on Hacker News: Meta in row after workers who saw smart glasses users having sex lose jobs

Meta in row after workers who saw smart glasses users having sex lose jobs
508 by gorbachev | 407 comments on Hacker News.