I did a test once with Yesod (also a Haskell based server side web framework; also uses Haskell's Warp webserver), and it was very fast. I got 60ms from Rails a

I did a test once with Yesod (also a Haskell based server side web framework; also uses Haskell's Warp webserver), and it was very fast. I got 60ms from Rails and 2ms from Yesod in a similar scenario. This will not be fastest (that will be the C/C++/Rust solutions), but the programming experience is very high level. I want speed in runtime performance (1) and in developer productivity (2). I'd say Rust and Haskell have interesting offerings looking at these two metrics.