Can you explain what the term 'Consumer group' means in Kafka system?

In Kafka, the term "Consumer group" refers to a group of consumers that jointly read data from topics.

Each message from a topic partition is delivered to only one consumer in the group, ensuring load balancing and parallel processing.

If there are multiple consumers in the group, Kafka distributes partitions among them to avoid processing duplication.

This allows scaling message processing and provides fault tolerance: if one consumer fails, its partitions are redistributed among the remaining consumers.