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by 1st1 1610 days ago
Yeah, that's true - Postgres is the engine. On top of that we have a lot of infra though: our IO server (amongst other things it acts as a server-side connection pool), compilers to compile our query language to SQL behind the scenes and to enforce our type system, a migrations engine, etc.

It's not that uncommon to stack DB engines on top of each other, we're just taking this concept a bit further.