[TacticalCoder]

> I get that postgres is a good default in many cases ...

And Datomic can run on top of PostGres anyway right? So it's not as there wasn't a lot of the knowledge that wasn't reusable: not for the queries themselves but everything about managing the database. Or am I wrong here?

[augustl]

Yes - if I understand you correctly :) Datomic writes opaque blobs of index data to existing storage, such as Postgres or dynamodb or a handful of others. But you can't query that data meaningfully directly, it's just a bunch of compressed datomic-specific index data in there, no domain structure or query power etc.