Book Image

Learning RabbitMQ

By : Martin Toshev
Book Image

Learning RabbitMQ

By: Martin Toshev

Overview of this book

RabbitMQ is Open Source Message Queuing software based on the Advanced Message Queue Protocol Standard written in the Erlang Language. RabbitMQ is an ideal candidate for large-scale projects ranging from e-commerce and finance to Big Data and social networking because of its ease of use and high performance. Managing RabbitMQ in such a dynamic environment can be a challenging task that requires a good understanding not only of how to work properly with the message broker but also of its best practices and pitfalls. Learning RabbitMQ starts with a concise description of messaging solutions and patterns, then moves on to concrete practical scenarios for publishing and subscribing to the broker along with basic administration. This knowledge is further expanded by exploring how to establish clustering and high availability at the level of the message broker and how to integrate RabbitMQ with a number of technologies such as Spring, and enterprise service bus solutions such as MuleESB and WSO2. We will look at advanced topics such as performance tuning, secure messaging, and the internals of RabbitMQ. Finally we will work through case-studies so that we can see RabbitMQ in action and, if something goes wrong, we'll learn to resolve it in the Troubleshooting section.
Table of Contents (18 chapters)
Learning RabbitMQ
About the Author
About the Reviewers

Problems with message delivery

In certain broker configurations, it may happen that the messages are not delivered as expected. This could either be due to a misconfigured queue TTL, or a poor network combined with the lack of publisher confirms, or AMQP transactions to support reliable delivery. To inspect what is going on with messages in the broker, you can install the Firehose plugin that allows you to inspect the traffic flowing through the message broker. You should be careful when enabling the plugin in a production environment as it may slow down the performance due to the additional messages that it sends to the amq.rabbitmq.trace exchange for each message entering the broker and each message exiting it. The plugin is enabled for a particular node and vhost. The RabbitMQ Tracer plugin builds on top of the Firehose plugin and provides a user interface to capture and trace messages. You can review the additional configuration options for both the plugins in the RabbitMQ documentation...