I’ve read a lot of books over my almost thirty year career as a software developer. A lot of books have helped me understand various topics related to building software, everything from books on learning new programming languages to understanding particular architectures to how to manage teams. But if you asked me to pick just three out of all the books I’ve read, the three books I discuss here have had the most profound positive impact on me as a developer. ...

In this post I will show how to use the ksqlDb Java REST client to interact with the ksqlDb server using a Spring Boot application as a foundation. The Boot app will also use Spring Webflux to help expand the use of reactive programming. I will also show the use of the Testcontainers framework for integrating deployment of Docker containers as part of integration testing, in this case with JUnit 5. What this will not cover is details of Apache Kafka or Spring Boot, or even ksqlDb and streaming systems, except to provide background to understand the code. There are plenty of other examples and posts that cover those details. ...