Spring Cloud Streams provides an abstraction over the messaging infrastructure. The underlying messaging implementation can be RabbitMQ, Redis, or Kafka. Spring Cloud Streams provides a declarative approach for sending and receiving messages.
As shown in the preceding diagram, the Cloud Streams work with the concept of a Source and a Sink. The Source represents the sender perspective of the messaging, and Sink represents the receiver perspective of the messaging.
In the given example, the Sender defines a logical queue called Source.OUTPUT to which the Sender sends messages. The Receiver defines a logical ...