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


After a client is successfully authenticated by the message broker, it needs to perform some activities in some virtual hosts. In the earlier chapters, we saw that permissions are defined per vhost and live either internally in the message broker or externally. The RabbitMQ LDAP backend plugin that we saw earlier provides you with an ability to store permissions in an LDAP server. The following types of permissions are configured in the message broker:

  • configure: This allows a resource to be created, modified, or deleted

  • write: This allows a resource to be written to

  • read: This allows a resource to be read from

We already discussed how to manage permissions using the rabbitmqctl utility and the HTTP API. The following commands can be used from the utility to manage permissions:

  • set_permissions: This sets permissions per user per vhost

  • clear_permissions: This clears permissions per user per vhost

  • list_permissions: This lists the users that are granted access to a particular vhost...