UUID v4 vs v7, and what's inside a UUID

· Flaviocopes · July 31, 2026, 9:54 a.m.
Summary
This blog post explores the differences between UUID versions 4 and 7, explaining the implications of using random UUIDs on database index performance and the benefits of v7's timestamp embedding. It guides developers on when to choose each version based on their application's requirements.
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