To be clear, this is if the client is a browser. If the "client" is a Linux machine you can just run a Docker container, or a full VM, or a Firecracker VM, no n

To be clear, this is if the client is a browser. If the "client" is a Linux machine you can just run a Docker container, or a full VM, or a Firecracker VM, no need for special languages or running software in a WASM VM. If it's a desktop/laptop you can just run a regular Postgres binary in an app (like Postgres.app does). If it's a phone you definitely don't want to be running the extra overhead of a persistent database process emulated on WASM, or something as heavyweight as Postgres. I've heard many people talk about "interesting offline scenarios", but I've yet to see an application do them properly. Some embed SQLite to good effect, but I've not yet seen anything running something like an embedded Postgres, and other than it being a clever trick that might be fun to implement, I'm struggling to think of a use-case.