Book Image

RabbitMQ Essentials. - Second Edition

By : Lovisa Johansson, David Dossot
Book Image

RabbitMQ Essentials. - Second Edition

By: Lovisa Johansson, David Dossot

Overview of this book

RabbitMQ is an open source message queuing software that acts as a message broker using the Advanced Message Queuing Protocol (AMQP). This book will help you to get to grips with RabbitMQ to build your own applications with a message queue architecture. You’ll learn from the experts from CloudAMQP as they share what they've learned while managing the largest fleet of RabbitMQ clusters in the world. Following the case study of Complete Car, you’ll discover how you can use RabbitMQ to provide exceptional customer service and user experience, and see how a message queue architecture makes it easy to upgrade the app and add features as the company grows. From implementing simple synchronous operations through to advanced message routing and tracking, you’ll explore how RabbitMQ streamlines scalable operations for fast distribution. This book will help you understand the advantages of message queue architecture, including application scalability, resource efficiency, and user reliability. Finally, you’ll learn best practices for working with RabbitMQ and be able to use this book as a reference guide for your future app development projects. By the end of this book, you’ll have learned how to use message queuing software to streamline the development of your distributed and scalable applications.
Table of Contents (8 chapters)

Creating a data analysis service

CC wants to be able to analyze incoming data. This system analyses requests for taxis in different areas, discovers important patterns, and finds peak request times. The project manager assigned the team to build a system capable of running several versions of the same service in parallel, allowing the graceful evolution of the service during updates.

A member of the team stated that it is possible to use a topic exchange and structure the routing key as {service_name}{version}. Their idea works within the current system; however, RabbitMQ offers a more elegant solution to this problem through the headers exchange.

The headers exchange allows the routing of messages based on their headers, which are custom key-value pairs stored in the message properties. The custom key-value pairs guide messages to the correct queue or queues. With this approach, the message and its routing information are all self-contained, remain consistent, and are therefore easier...