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uuidbackenddeveloper tools

UUID v4 vs UUID v1 – What’s the Difference?

Understand the difference between UUID version 1 and version 4 with practical examples.

DT
DevNexus Team
Feb 26, 20265 min read

What is UUID?

UUID is a universally unique identifier used in distributed systems.

UUID v1

  • Based on timestamp
  • Includes MAC address

UUID v4

  • Randomly generated
  • More secure

Which One Should You Use?

For most applications, UUID v4 is recommended.

Generate UUID instantly using our UUID Generator tool.

Conclusion

Choose UUID version based on security and uniqueness needs.

On This Page

  • What is UUID?
  • UUID v1
  • UUID v4
  • Which One Should You Use?
  • Conclusion

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