Also "at the edge" sometimes often implies read-heavy applications and places where you can bake essentially "static" DBs. In theory all the SQL query power ben

Also "at the edge" sometimes often implies read-heavy applications and places where you can bake essentially "static" DBs. In theory all the SQL query power benefits of a full RDBMS, but with the presumed simplicity of (mostly) static file deployments via traditional CDN file copies. Many applications are going to be write-heavier than that. Many applications don't need to distribute database deployment by "simple file copying" to potentially hundreds of "edges". But there are certainly interesting use cases for that when you can be read-heavy, deal with write trade-offs, and can easily "simple file copy everywhere" a DB. (Though I think most of the ones I find interesting are more Datasette and its plugins than Fly/Cloudflare style.)