All you need is Postgres (OLTP) and if you have large datasets where Postgres falls behind for analytical work, then you reach for Clickhouse (OLAP) for those features (while Postgres remains your primary operational database and source of truth).
Agreed. I have a good bit of experience in SaaS and analytics and that's exactly what I landed on for building Luabase[0]. Postgres (specifically Supabase) for the app database, Clickhouse to run the analytics (which is the product).
