Sorted:

Kafka Docker Compose – Fast Bootup Script

Configure Kafka Producer and Consumer in Spring Boot x2

Configure Kafka Producer and Consumer in Spring Boot

Easy way to test Spring Boot microservices

Testing Spring Boot Kafka with Testcontainers – v2

Database and Kafka Integration with Testcontainers in Spring Boot

Testing Spring Boot Kafka with Testcontainers

Kafka authentication using SASL/SCRAM

A Simple Apache Kafka Cluster With Docker, Kafdrop, and Python

Kafka, Avro Serialization, and the Schema Registry