Exploring PostgreSQL 18's new UUIDv7 support
4 days ago
- #UUIDv7
- #PostgreSQL
- #Database Performance
- UUIDv7 is a new type of UUID introduced in PostgreSQL 18, incorporating a timestamp for natural sortability.
- UUIDv7 improves performance over UUIDv4 by reducing index fragmentation and improving cache efficiency.
- UUIDv7 is supported across various platforms, including Python 3.14, ensuring consistent format usage.
- UUIDv7 is not recommended for external-facing applications due to privacy concerns from timestamp leakage.
- Migration from UUIDv4 to UUIDv7 requires careful planning, including testing and updating dependent systems.