[dmit]

Kotlin is not the future of anything. They got the Android boost and still, two years later, all they have to offer is a molasses-slow improvement pace and a shitty dev experience in their signature IDE (which also happens to be made by the same company).

Last time I tried to create a Kotlin project in IDEA, it couldn't provide type information on hover. The Kotlin dialect of Gradle was barely supported enough to be called a "third-class citizen". It's super embarrassing.

[pkolaczk]

Yeah, Jetbrains marketing wants you to think it is the other way round, but actually tooling support for Scala is ahead of Kotlin by far, except maybe Android.

Scala is not tied to a single IDE, it works great in VScode, Eclipse and Intellij and anything else that supports LSP, which is an open standard. And it works really well - including type inference and very advanced implicits stuff.

And recently Scala got excellent incremental compilation support by Bloop from ScalaCenter, which not only blows Kotlin out of the water but even Java with Gradle. The last year I develop purely in Java and I use Scala bloop for day-to-day development, because I couldn't stand multi-minute Gradle compile times. Getting incremental compile times counted in milliseconds (!) or single seconds at worst is something very hard to give up on.

[EdwardDiego]

We're writing new apps in Kotlin instead of Java, works fine for us. shrug Vert.x , Ktor apps, Kafka streaming apps. IDEA handles it absolutely fine these days, I suspect you last tried it sometime ago.

Can't comment on the Gradle stuff though, I vastly prefer Maven.

[The_rationalist]

Is vertx better than ktor for production?

[EdwardDiego]

Vert.x is doing us well for high volume apps, Ktor is early stages but looks alright also. That said, haven't benchmarked identically feature compete implementations of the same app in both, so don't really have the metrics to properly compare, but so far at least, it seems comparable.