I recently built a site that aggregates top posts from various sources and am using both SQLite and Swift for my backend. Was a pleasant experience mostly.
I am primarily a mobile developer (I am the developer of Hack, hacker news app on iOS and android). While I have developed backends in rust and nodejs, I wanted to give swift a shot to see how it was. I used Vapor for the web server in swift. It was surprisingly pretty good experience and I am considering using it for my next project too.