Blog

Notes from the build

Each post is an MDX file in the repository, synced into Postgres at deploy so it is searchable. Written like code: versioned, reviewed, and honest about what broke.

Sep 2, 2026 · 1 min read

Serverless and the pooled connection

A database URL that works perfectly on one laptop can exhaust a Postgres server under real traffic. Why Neon gives you two endpoints, and which one goes where.

deploymentpostgresneonvercel

Sep 2, 2026 · 2 min read

The last-admin race, and the lock that fixed it

Two admins demoting each other at the same instant can leave a site with no admin at all. Serializable isolation looked right and was wrong; an advisory lock was the answer.

postgresconcurrencyadmin

Sep 2, 2026 · 1 min read

Why money is an integer

The shop stores every price as cents. Here is the floating-point arithmetic that makes any other choice a slow-motion reconciliation failure.

commercepostgrescorrectness