The producer never sends any messages directly to a

queue. Instead, the producer can only send messages

to an exchange.

▪ Exchange has 2 sides: it receives messages from

producers, it pushes them to queues.

▪ Exchanges control the routing of messages to queues

according to exchange types.

▪ RabbitMQ uses a push model.

▪ Push-based queues can overwhelm consumers if

messages arrive faster than the consumers can process

them.

▪ Each consumer can configure a prefetch limit.

▪ Push model is to distribute messages individually and

quickly, and ensure that work is concurrent way.

▪ Messages are processed in the same order how they

arrived in the queue

https://www.tekkiwebsolutions.com/blog/what-is-rabbitmq/