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stateless-me/uuidv47

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⚡ UUIDv47 = v4 privacy + v7 performance

7 mentions on Hacker News by 7 people: 1 story, 6 comments · first 2025-09-17 · latest 2026-07-22

Mentions per year 7 mentions · busiest year 2025 (4)
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  1. …7/4 'converters' have been featured on HN a few times: * https://github.com/ali-master/uuidv47 * https://github.com/stateless-me/uuidv47
    comment by throw0101d · 2026-07-22 · in The startup's Postgres survival guide
  2. Others agree. Check out uuidv47 https://github.com/stateless-me/uuidv47
    comment by 8organicbits · 2026-03-07 · in UUID package coming to Go standard library
  3. Sounds fun! Another option out there is "UUID47" which uses siphash[0] 0. https://github.com/stateless-me/uuidv47
    comment by Thev00d00 · 2026-02-09 · in Ask HN: What are you working on? (February 2026)
  4. …times of everything. See perhaps "UUIDv47 — UUIDv7-in / UUIDv4-out (SipHash‑masked timestamp)": * https://github.com/stateless-me/uuidv47 * Sept 2025: https://news.ycombinator.com/item?id=45275973
    comment by throw0101a · 2025-12-15 · in Avoid UUID Version 4 Primary Keys in Postgres
  5. …like this [1] or an adaptation may address their security considerations. Discussed here [2] [1] https://github.com/stateless-me/uuidv47 [2] https://news.ycombinator.com/item?id=45275973
    comment by turrini · 2025-10-18 · in Exploring PostgreSQL 18's new UUIDv7 support
  6. …the other hand if you are doing that you can also go with u64 primary keys and transform those 1: https://github.com/stateless-me/uuidv47
    comment by wongarsu · 2025-09-21 · in UUIDv7 Comes to PostgreSQL 18
  7. ▲ 194
    UUIDv47: Store UUIDv7 in DB, emit UUIDv4 outside (SipHash-masked timestamp)
    story by aabbdev · 2025-09-17 · 88 comments