Introduction
Understanding UUID performance implications helps optimize your applications.
Storage Overhead
- UUIDs require 16 bytes vs 4-8 bytes for integers
- Indexes are larger but still efficient
- Consider storage costs in large-scale systems
Index Performance
- Random UUIDs can cause index fragmentation
- UUID v7 improves index performance with time-ordering
- Proper indexing is crucial for performance
Generation Speed
- Modern UUID generation is very fast
- Cryptographically secure generators may be slightly slower
- Performance impact is usually negligible
Optimization Tips
- Use binary storage when possible
- Consider UUID v7 for better index locality
- Cache UUID generation for bulk operations
Conclusion
UUID performance is generally excellent, with proper optimization techniques addressing any concerns.