Chapter 2. AMQP Model Overview

AMQP Messaging uses a Producer - Consumer model. Communication between the message producers and message consumers is decoupled by a broker that provides exchanges and queues. This allows applications to produce and consume data at different rates. Producers send messages to exchanges on the message broker. Consumers subscribe to exchanges that contain messages of interest, creating subscription queues that buffer messages for the consumer. Message producers can also create subscription queues and publish them for consuming applications.

The messaging broker functions as a decoupling layer, providing exchanges that distribute messages, the ability for consumers and producers to create public and private queues and subscribe them to exchanges, and buffering messages that are sent at-will by producer applications, and delivered on-demand to interested consumers.