All Posts

Published on
May 30, 2026
Scheduled Prompts, From First Principles
distributed-systems architecture postgres reliability scheduling ai-agents
How to keep a perfectly reliable promise on top of machines that fail all the time, a backend design you can re-derive yourself.
Published on
September 17, 2024
Difference in Minutes Between Two Timestamps in PostgreSQL
postgres
How to calculate the difference in minutes between two timestamps in PostgreSQL using the `EXTRACT` and the `EPOCH` function.

Scheduled Prompts, From First Principles