How Infinitas Learning runs Postgres and ClickHouse for 1.6 million learners

Jerome vanden Heuvel & Ana Lacruz, Infinitas Learning

Infinitas Learning processes grades and progress for 1.6 million active learners across 324 million assignments, running transactional workloads on Postgres managed by ClickHouse and customer-facing teacher analytics on ClickHouse Cloud.

Jerome and Ana walk through the path there: why Postgres alone couldn't do the analytics, why P99 spikes sent them from Cloud to self-hosted and what brought them back, and why they migrated from Neon to have both systems under one roof.