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

Testing RabbitMQ applications

Testing is essential to ensure that a system works as expected. In this sense, the message broker is no exception. In the next sections, we will cover very briefly the different aspects of testing applications that use RabbitMQ as a message broker.

Unit testing of RabbitMQ applications

You can test applications that publish/subscribe to a RabbitMQ broker by isolating client API calls to the broker using a mocking framework such as JMock or Mockito in case of Java. The mocking library to use depends on the language that you are using to interact with the broker, but, in general, you would mock calls to the broker as you would with any other type of external system that is used by your application.

Integration testing of RabbitMQ applications

In case you are using only AMQP 0-9-1 features in your communication with the RabbitMQ broker, you can use an embedded AMQP server. Apache Qpid provides an embedded version that you can use in your integration tests. In order...