Introduction
UUID v7 is a newer UUID version that combines time-ordering with randomness, offering the best of both worlds.
What Makes UUID v7 Special?
UUID v7 includes a Unix timestamp in milliseconds, making it time-ordered while maintaining randomness for uniqueness.
Advantages
- Time-ordered: Can be sorted chronologically
- Better privacy than v1: No MAC address exposure
- Database-friendly: Improves index performance
- Modern standard: Designed for current applications
Use Cases
- Database primary keys needing time-ordering
- Logging systems
- Event tracking
- Distributed systems requiring temporal ordering
Conclusion
UUID v7 is ideal when you need time-ordering without the privacy concerns of UUID v1.