Zero-Downtime PostgreSQL Major-Version Upgrade at Scale
- Mohammad Abu Mattar
- DevOps
- Databases
- Cloud Computing
- Published: 25 Jul, 2026
- Updated: 25 Jul, 2026
A multi-terabyte PostgreSQL 12 database was reaching end of life, and the business ran around the clock, so the usual answer of "schedule a maintenance window" was off the table. We upgraded it to Pos
Cutting a SaaS AWS Bill 41% Without Slowing Delivery
- Mohammad Abu Mattar
- Cloud Computing
- DevOps
- Cloud Native
- Published: 19 Jul, 2026
A growing SaaS ran on EKS with a full GitOps pipeline, and it was over its AWS budget nearly every month. The reflex from leadership was the usual one: freeze features until the bill comes down. That