A simplified diagram of how the RabbitMQ binder operates can be seen below.

Figure 2.1. RabbitMQ Binder

The RabbitMQ Binder implementation maps each destination to a TopicExchange. For each consumer group, a Queue will be bound to that TopicExchange. Each consumer instance have a corresponding RabbitMQ Consumer instance for its group’s Queue. For partitioned producers/consumers the queues are suffixed with the partition index and use the partition index as routing key.