https://nalar.dev/tags/identifiers/ Recent content in Identifiers on Nalar Hugo en-us Wed, 09 Sep 2026 00:00:00 +0700 https://nalar.dev/migrate-time-based-identifiers-from-uuid1-to-uuid6/ Wed, 09 Sep 2026 00:00:00 +0700 https://nalar.dev/migrate-time-based-identifiers-from-uuid1-to-uuid6/ <p>UUID version 1 has been around for a long time. It combines a timestamp, a clock sequence, and a node identifier into a 128-bit value, which makes it useful when applications need identifiers that can be generated without coordinating through a central database sequence.</p> <p>Its layout has an awkward property, though: the timestamp bits are not arranged from most significant to least significant in the same order that ordinary UUID comparison uses.</p>