Do UUIDs Collide? Implementation and Operational Patterns That Invite Duplicates (archived 2026-09-01)

UUIDs are hard to collide when used normally, but fixed seeds, snapshots, namespace misuse, truncation, and custom formats can invite duplicates. We organize the implementation and operational patterns to avoid. Archived version of https://comcomponent.com/en/blog/2026/03/24/001-uuid-collision-bad-implementation-patterns/, as published on 2026-09-01. The live article is maintained and may change after this date. First published 2026-03-24.