4 ms·
Huh, you're right. I guess I gotta message an old coworker and tell them their "perf optimization" didn't work. Lesson learned, thanks!
by tticvs 5y ago
Huh, you're right. I guess I gotta message an old coworker and tell them their "perf optimization" didn't work.
Lesson learned, thanks!
- masklinn 5y agoDo check that they're not using a "cheating" implementation, I think some DBs have "sequential UUIDs" which are either UUIDv1 the right way up (aka uuidv6) internally, or an other scheme which yields a sequence (e.g. mssql's NEWSEQUENTIALID). Alternatively, it's possible that they created pseudo-UUIDv1 by hand putting data in UUIDv6.