System Design - postgresql
#01 Schema Migration
The Migration That Broke Production Premium
ALTER TABLE on 400M rows. It locks. Everything downstream times out. You learn about online schema migration the hard way.
Read
#02 Databases
Schema Changes Without Downtime: The Art of Zero-Disruption Migrations Premium
How to evolve your database schema safely in production without taking your app offline - strategies, patterns, and real examples.
Read