RabbitMQ (Message Broker)

RabbitMQ as the message broker for async work, event fan-out, and decoupling producers from consumers.

Core Concepts

Concept	Meaning
Exchange	Receives messages from producers, routes them to queues based on type + routing key
Queue	Buffer that holds messages until a consumer acks them
Binding	Rule connecting an exchange to a queue (optionally with a routing key pattern)
Routing key	String attached to a message, matched against bindings to decide delivery

Exchange Types