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UUIDv7

2 views collected around this technical thread.

macrozheng
macrozheng
Jun 20, 2025 · Backend Development

Why UUIDv7 Outperforms Traditional UUIDs for Database Primary Keys

This article explains the drawbacks of traditional random UUIDs as database primary keys, introduces the time‑ordered UUIDv7 design, shows how its ordered structure improves index performance and storage efficiency, provides Java generation and SQL usage examples, and answers common questions about collisions and clock rollback.

DatabaseJavaPerformance
0 likes · 9 min read
Why UUIDv7 Outperforms Traditional UUIDs for Database Primary Keys
IT Services Circle
IT Services Circle
Jun 4, 2025 · Databases

Understanding UUIDv7: Time‑Ordered IDs for Database Primary Keys

This article explains the limitations of traditional random UUIDs as database primary keys, introduces the time‑ordered UUIDv7 design with its 48‑bit timestamp and 74‑bit random component, shows Java generation and SQL storage examples, and addresses performance benefits and common questions.

B+Tree indexingJavaUUIDv7
0 likes · 8 min read
Understanding UUIDv7: Time‑Ordered IDs for Database Primary Keys