For read only it can be a great option. But even then I would choose D1 which has an amazing free tier and is sqlite under da hood.

But then you don't get the benefits of having the DB locally, with in-process access.

It's local to the worker? I don't understand what you mean.

Unless your Cloudflare worker and the DB are scheduled onto the same physical server, they are not local to one another. I don’t know much about D1, but the overwhelming majority of cloud infra makes no such guarantees, nor are they likely to want to architect it in that manner.

Cloudflare's Durable Objects puts your Worker and SQLite DB on the same physical server (and lets you easily spawn millions of these pairs around the world).

D1 is a simplified wrapper around DO, but D1 does not put your DB on the same machine. You need to use DO directly to get local DBs.

https://developers.cloudflare.com/durable-objects/

(I am the lead engineer for Cloudflare Workers.)

Very cool, thanks for the response!