RabbitMQ Essentials - Second Edition by Lovisa Johansson

Author:Lovisa Johansson [Lovisa Johansson]
Language: eng
Format: epub
Tags: COM051280 - COMPUTERS / Programming Languages / Java, COM060090 - COMPUTERS / Internet / Application Development, COM060080 - COMPUTERS / Web / General
Publisher: Packt
Published: 2020-08-07T09:06:39+00:00

Fig 3.3: Back-office application in the architecture

To roll this out, one way could be to use the topic messaging that's already in place and create a special topic to which all drivers would be subscribed. However, there is an even cleaner and simpler approach offered by the AMQP protocol – fanout exchange.

Fanout exchange

Fanout exchange takes all messages that are coming in and delivers them to all queues that are bound to it. An easy-to-understand example of where to use a fanout is when messages need to be spread between many participants, like in a chat (however, there are probably better choices for pure chat applications).

Other examples include the following:

Score board or leaderboard updates from sports news to mobile clients, or other global events

Broadcasting various state and configuration updates in distributed systems

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