Message Brokers

Abstract

The messaging systems described in the previous chapter can be seen as an integration infrastructure based on message queues that applications can use to communicate with each other asynchronously. The use of such infrastructure has several advantages. One is that all applications use the same interface (the messaging system API) to communicate with each other, rather than having to integrate each application with the custom API of other applications. The second advantage is that the use of message queues decouples applications from each other by allowing each application to handle requests at its own pace, without blocking other applications. And the third advantage is that applications can rely on the mechanisms of the messaging system that provide guaranteed delivery, efficient routing, storage, etc. without having to implement those mechanisms themselves.