Herding elephants: lessons learned from sharding Postgres at Notion

Herding elephants: Lessons learned from sharding Postgres at Notion Earlier this year, we took Notion down for five minutes of scheduled maintenance. While our announcement gestured at “increased stability and performance,” behind the scenes was the culmination of months of focused, urgent teamwork: sharding Notion’s PostgreSQL monolith into a horizontally-partitioned database fleet. The shard nom