ClickHouseClickHouse
ClickHouse® is a real-time analytics database management system
TL;DR · 30-second scan
ClickHouse (C++) — ClickHouse® is a real-time analytics database management system
You're ingesting >100M events/day and need real-time analytics with SQL.
Analytics · Database & ORM
The OLAP database powering most "analytics at scale" stories of the last 5 years. Columnar, distributed, eats billions of rows for breakfast. ~39k stars. Used by Cloudflare, Uber, eBay for log + metric + product analytics. Operationally heavier than Postgres — schemas need thought, joins are awkward, eventual consistency on replicas. But for time-series and event streams it is the highest-throughput SQL engine you can self-host.
You're ingesting >100M events/day and need real-time analytics with SQL.
You need transactional writes, ad-hoc joins, or you have <10M rows — overkill.
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