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

Case study: Initial design of the CSN

The following diagram extends the general overview of a CSN in regard to a client browser that provides client-side interaction with the system:

Now that we have seen how to implement messaging patterns in RabbitMQ, we can apply this to implement the following:

  • Global event handling; we can use the default exchange along with a single queue called event_queue. The worker nodes as illustrated in the preceding diagram will subscribe to the event_queue and start handling events for long-running tasks in a round-robin fashion; the CompetingReceiver class is a proper alternative for the implementation of a point-to-point receiver on the worker nodes.

  • Chat service; each user of the system will have a separate queue that will receive messages for that queue. You can use a variant—a point-to-point channel—to send a message from one user to the other. For group chatting, you can have a fanout or topic exchange (based on the implementation strategy) for the particular...