Kafka training materials

This repository contains examples of using Apache Kafka with Spring Boot apps. Spring for Apache Kafka (spring-kafka) has been picked as a library of choice as it's quite low level ("close" to Kafka) and does not introduce additional levels of abstraction.

Prerequisites

Software requirements

• Java 11+ (but seriously, you should already run on 17+)
• Docker & Docker Compose
• Bash-compatible terminal.

All the exercises should run smoothly with the latest IntelliJ Idea.

Local Kafka cluster

Start local Kafka cluster using Docker Compose

# run from project root:
docker compose up

Keep it running for the whole time. Once the training is over, stop it with Ctrl+C.

Table of contents

• Exercise 1 - Getting to know Apache Kafka
• Exercise 2 - Introducing Spring Kafka
• Exercise 3 - JSON and error handling
• Exercise 4 - Kafka Streams