Comment by _ben_

Disclaimer: I am the founder of PolyScale [1].

We see both use cases: single large database vs multiple small, decoupled. I agree with the sentiment that a large database offer simplicity, until access patterns change.

We focus on distributing database data to the edge using caching. Typically this eliminates read-replicas and a lot of the headache that goes with app logic rewrites or scaling "One Big Database".

[1] https://www.polyscale.ai/