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)
Message Routing

Thus far, all message interaction in this book has been unidirectional, flowing from message publishers to consumers. What if a consumer wants to alert a publisher that processing is complete and send a reply, or a taxi driver wants to acknowledge a taxi booking request?

This chapter covers steps 5 to 10 in the taxi application system architecture, where a taxi driver responds to the customer and confirms a booking request. The taxi publishes its current location to a queue. The customer's application connects to the broker through WebSockets and subscribes to location updates, delivered directly from the taxi.

The Remote Procedure Call (RPC) request-response concept will be introduced, along with how to route a response back to the consumer. Since Advanced Message Queuing Protocol (AMQP) 0-9-1 , brokers provide four exchange types. This chapter also shows...