a simple web based chat application built with Kotlin, Vaadin, Spring Boot and Apache Kafka

Intro In this post I show how to combine some language / frameworks and libraries / tools to build a web-based scalable chat application. I chose the following combination of tools: Kotlin as implementation language Vaadin for the web-based application Apache Kafka as the message backend Spring-Boot to get all together and running As I am bad in creating cool names for projects I just put together the first letters of the used tools and named this whole thing kovasbak.