How OpenAI Scales PostgreSQL for 800M Users

arpit_bhayani · x · 2026-07-07

OpenAI published an engineering blog detailing how it supports 800 million ChatGPT users using a single PostgreSQL primary database and 50 multi-region read replicas. The setup involves scaling methods, PgBouncer proxies, cache locks, and cascading read replicas. A YouTuber subsequently created an explainer video breaking down these technical details.

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