Hi, im android developer. I want to ask, whats the current go to framework for medium sized webserver?

I’d recommend spring unless you have some specific other requirements

If you don't all of springs bells and whistles, I'd go for Ktor. But to be fair, theres http4k, javalin, spark, vert.x each one has there advantages and disadvantages. Ktor is a Kotlin DSL and is based on Coroutines, you can switch the underlying server (Netty, Jetty...), and it has a bunch of pluggable Features, and a Webclient too. It's nice to work with, and isn't overbloated when you don't want it to be.

thanks

You could try #exposed or #squash if you want a more Kotlinish interface, also Vert.x has async db clients if that's your need.

JOOQ is a good library to use for accessing a relational DB (https://www.jooq.org/).

+1 for ktor, really smooth learning curve as well, and a good introduction to kotlin as a language, if that's your case

If you decide to try with Ktor, there is #ktor and ktor.io