Chapter 3. Architecture and Messaging

RabbitMQ server simply solves messaging problems. But what is the meaning of messaging itself? Sometimes, the term messaging is confused with real-time messaging such as chat messages, SMS messages, and so on. These systems also have the messaging system in their subsystems; however, we are talking about a somewhat different issue.

By the dictionary definition, messaging is a short communication transmitted by words, signals, or other means from one person, station, or group to another. In computer engineering, definition of messaging seems like the dictionary definition. Messaging simply takes the messages from a producer and sends it to the consumers by the computer engineering definition. In messaging systems, we are using some architecture related to messaging and elements. Moreover, we have different functionalities of the elements in the messaging system. So, we will start our most important chapter with the messaging concepts and their roots, and then we'll dive into the details of AMQP that describes the RabbitMQ mechanism. The following list shows the structure of this chapter:

• Messaging and use cases of messaging
• Enterprise messaging
• Messaging related software architectures
• Messaging concepts
• Advanced message queuing protocol (AMQP)