## Metadata - Author: [[buildkite|Buildkite]] - Full Title:: Goodbye integers. Hello UUIDv7! - Category:: #🗞️Articles - URL:: https://buildkite.com/blog/goodbye-integers-hello-uuids - Finished date:: [[2023-10-08]] ## Highlights > the random nature of standard non-time-ordered UUIDs (such as v4) can create database performance problems when used as primary keys. This problem is often referred to as [poor database index locality](https://www.percona.com/blog/uuids-are-popular-but-bad-for-performance-lets-discuss/). ([View Highlight](https://read.readwise.io/read/01hc6zagspd4qnsvvnx591rnp4))