Scaling out with Kafka Consumer Groups
Java
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README.md

Scaling out with Kafka Consumer Groups

A simple example to demonstrate how Kafka consumers are designed for distributed, scale-out architectures

Scenario

  • single node cluster (keeping things simple)
  • 4 partitions
  • start with 1 consumer and bump up to 4 consumers (increment by 1)

Next ....

  • start Kafka
  • download and setup code mvn clean install
  • start the producer (we'll keep one producer for simplicity) - DOWNLOAD_DIR/target/java -jar kafka-scale.jar producer
  • start all consumers one by one and keep track of the logs in order to figure out partition load distribution - DOWNLOAD_DIR/target/java -jar kafka-scale.jar consumer

Check out the blog post for more details