Database on Experiment, Fail, Learn, Repeat

UUIDv4, UUIDv7, and Avoiding Deep OFFSET Pagination

Sat, 01 Aug 2026 00:00:00 +0000

I initially thought UUIDv7 would be very important for avoiding expensive OFFSET pagination. UUIDv7 is time ordered, while UUIDv4 is random, so it seemed natural that changing the identifier would be the key to fast pagination.

PostgreSQL MVCC and Autovacuum Learnings

Fri, 31 Jul 2026 00:00:00 +0000

PostgreSQL can let readers and writers work concurrently because of multi-version concurrency control, or MVCC. The trade-off is that an update usually creates a new tuple version instead of replacing the old one in place. A delete also makes a tuple obsolete without immediately removing its storage.

Initial PostgreSQL Index Optimization Lessons

Wed, 01 Jul 2026 00:00:00 +0000

I built a small Go CRUD service to learn where a PostgreSQL-backed application starts to slow down. The service manages companies, users, and inventory, while a separate load generator creates a repeatable mixture of reads and writes.