2025-06-11T14:32:07Z [INFO] [requestId=d5e6af94-cdf0-4cf4-bc48-f9bfba16b189] Payment initiated
2025-06-11T14:32:08Z [ERROR] [requestId=d5e6af94-cdf0-4cf4-bc48-f9bfba16b189] Gateway timeout
At first glance, d5e6af94-cdf0-4cf4-bc48-f9bfba16b189 looks like a jumble of hexadecimal characters and hyphens. But to database administrators, software engineers, and API architects, it represents a 128-bit universally unique identifier (UUID) — statistically guaranteed to be unlike any other ID generated before or after it.
In this long-form analysis, we will:
Not all UUIDs are created equal. The string d5e6af94-cdf0-4cf4-bc48-f9bfba16b189 has a version encoded within it. Knowing the version helps you understand how the ID was generated: d5e6af94-cdf0-4cf4-bc48-f9bfba16b189