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

High availability support in RabbitMQ

RabbitMQ provides an extension of the default clustering mechanism that allows the replication of the contents of a queue over one or more nodes. It takes the active-active approach for establishing a highly available cluster, and you can select how many nodes to replicate a queue in a master-slave configuration (one node is designated as the master and all other nodes as the slaves):

  • Replicate to all nodes in the cluster

  • Replicate to a certain number of nodes in the cluster

  • Replicate to certain nodes in the cluster (specified as a list of node names)

In terms of RabbitMQ, this extension is called mirrored queues.

Note that there is an opportunity to establish an active-passive RabbitMQ cluster using helper technologies that allow you to use redundant servers in order to establish that type of clustering; this was the preferred approach in most production scenarios before built-in support for mirrored queues was provided. However, mirrored queues are now...