RabbitMQ - Broker overview | Theoretical explanation
Theoretical explanation | Message flow in RabbitMQ
The producer publishes a message to an exchange. When creating an exchange, the type must be specified. This topic will be covered later on.
1 - The exchange receives the message and is now responsible for routing the message.
2 - The exchange takes different message attributes into account, such as the routing key, depending on the exchange type.
3 - Bindings must be created from the exchange to queues. In this case, there are two bindings to two different queues from the exchange.
4 - The exchange routes the message into the queues depending on message attributes.
5 - The messages stay in the queue until they are handled by a consumer
6 - The consumer handles the message.