Understand RabbitMQ as a smart broker built on the AMQP model: exchanges route, queues store.

Pick the exchange type that matches your routing pattern: direct, topic, fanout, or headers.

Wire producers to consumers declaratively through binding keys instead of hardcoded destinations.

Use consumer acks correctly so messages are never silently lost on failure.

Guarantee the broker actually stored a message — survive broker restarts without losing data.

Capture messages that fail, expire, or overflow instead of losing them or looping forever.

Balance load fairly across workers and prevent one consumer from hoarding messages.

Recognise the workloads where a smart broker beats a log or a managed queue.