vertx-examples

did you use Vert.x ? IMHO that has the closest cognitive match to Erlang. it regularly tops performance benchmarks - https://www.techempower.com/benchmarks/#section=data-r18&hw=... and super simple heroku deployments - https://github.com/vert-x3/vertx-examples/tree/master/heroku... Also Kotlin !! https://vertx.io/docs/vertx-core/kotlin/ (kotlin vertx on heroku: https://github.com/vert-x3/vertx-examples/tree/master/kotlin...)

Have you considered Vert.x? http://vertx.io/ Vert.x lets you do most of those stuff such as HTTP, futures, P2P, pub-sub and more. It's event-driven and made for concurrency but you can easily run blocking code in it if you want to. I think you can integrate it with existing projects to get those capabilities. It also has tools for testing. It's well documented and with great examples (https://github.com/vert-x3/vertx-examples) so it's easy to learn based on my experience. Anyone here who also experienced using Vert.x?

To someone who is primarily working with database driven applications this looks really bad compared to what spring-data offers: https://github.com/vert-x3/vertx-examples/blob/master/jdbc-e... What is the appeal to you?

If Scala is an option, try Finatra 2. Much simpler than Akka* and Play, well done, performant and battle tested (as opposed to akka-http). https://www.youtube.com/watch?v=7dsX0S0WsEk If Scala is not your thing, you should definitely check out Vert.x 3 with vertx-web https://github.com/vert-x3/vertx-examples/tree/master/web-ex...