PostgreSQL 17 upgrade tutorial

Inside OpenAI’s PostgreSQL Strategy: Scaling a Single Primary to 800 Million Users

Cary Huang
January 26, 2026January 26, 2026
News, postgresql

OpenAI is running ChatGPT and its API platform — serving around 800 million users — on a single primary PostgreSQL instance. Not a distributed SQL cluster, not a heavily sharded fleet, but one write primary with nearly 50 read replicas… Read More »Inside OpenAI’s PostgreSQL Strategy: Scaling a Single Primary to 800 Million Users

How to Safely Use pg_upgrade for PostgreSQL 17 Major Upgrades

Cary Huang
January 14, 2026January 14, 2026
postgresql

Introduction: Why pg_upgrade Matters for PostgreSQL 17 Major upgrades are one of those moments where a PostgreSQL environment either proves its maturity or exposes every shortcut you ever took. With PostgreSQL 17 on the horizon, I treat the upgrade strategy… Read More »How to Safely Use pg_upgrade for PostgreSQL 17 Major Upgrades