UUID6 Generator
Generate time-ordered UUIDs (reordered v1)
IDUUID7 Generator
Generate time-ordered UUIDs with random data
UUID7
Click 'Generate' to create your first UUID7
About UUID7 Generator
UUID7 (Universally Unique Identifier version 7) generates time-ordered identifiers using Unix timestamp with random or counter-based values. This modern version provides natural chronological sorting with millisecond precision while maintaining high entropy and uniqueness, making it ideal for contemporary applications requiring time-based identifiers.
Generate UUID7 identifiers with Unix timestamp-based ordering that provides millisecond precision and natural sorting capabilities. The tool combines timestamp information with random or counter-based values for guaranteed uniqueness while providing optimal database performance and modern structural organization.
Perfect for modern applications requiring time-ordered identifiers, distributed systems with high-performance requirements, database applications needing efficient indexing, and systems where millisecond precision timing with natural sorting is essential. Ideal for microservices, real-time applications, and distributed databases requiring optimal time-based performance.
UUID7 provides the most modern approach to time-based UUID generation with millisecond precision, natural sorting, and optimal database performance. The combination of Unix timestamp precision with high entropy makes it excellent for contemporary applications requiring efficient time-based unique identifiers.
Key Features
- Unix timestamp-based generation
- Millisecond precision timing
- Natural chronological sorting
- High entropy random values
- Optimal database performance
- Modern specification compliance
UUID7 Frequently Asked Questions
What makes UUID7 the most modern UUID version?
UUID7 uses Unix timestamps for better compatibility, provides millisecond precision, includes high-entropy random values, and is designed for optimal database performance. It addresses limitations of earlier time-based UUID versions.
How does UUID7 handle uniqueness in high-frequency generation?
UUID7 combines Unix timestamps with random or counter-based values to ensure uniqueness even when generating many UUIDs within the same millisecond. This makes it suitable for high-throughput applications.
Should I migrate from UUID1 to UUID7?
If you need time-based UUIDs and can update your systems, UUID7 offers better performance, privacy (no MAC address), and modern design. However, consider compatibility with existing systems and libraries.
Does UUID7 preserve privacy better than UUID1/UUID6?
Yes, UUID7 doesn't include MAC address information, using random or counter values instead. This eliminates privacy concerns associated with hardware-based identifiers in UUID1 and UUID6.
What's the timestamp precision of UUID7?
UUID7 provides millisecond precision using Unix timestamps. This precision is sufficient for most applications and provides better chronological resolution than many other UUID versions.
UUID7 Best Practices
- Use UUID7 for new systems requiring time-based identifiers
- Verify library and system support for UUID7
- Leverage natural sorting for efficient queries
- Consider UUID7 for privacy-sensitive applications
- Test high-frequency generation scenarios for your use case
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