RabbitMQ is an open source messaging broker. It's often referred to as a message-oriented middleware that implements the Advanced Message Queuing Protocol (AMQP). Fundamentally, RabbitMQ provides a common platform for sending and receiving messages, where it guarantee the safety of messages until they are received. By playing an intermediary role between message consumers and producers, AMQP makes it easy to decouple applications.
Out of the box, RabbitMQ provides support for many messaging patterns. RabbitMQ guarantees data delivery, provides non-blocking operations, and sends push notifications. Moreover, it provides infrastructure for publish/subscribe, asynchronous processing, and work queues.
RabbitMQ provides a variety of features, including the tuning of application performance, clustering, flexible routing, federation, and so on. If you need specific features, RabbitMQ has several plugins that cater different needs. The RabbitMQ plugins extend its features in different ways, and you can also write your own plugin.
Through this book, we aim to give you a deep understanding of RabbitMQ and its use cases by providing multiple opportunities to learn about the message-oriented middleware, messaging architecture, messaging patterns, and solutions to real-life scenarios using RabbitMQ.
This book covers many aspects of software development with RabbitMQ. It provides thorough understanding of messaging, RabbitMQ, message-oriented software development, and so on.
Chapter 1, Getting Started, introduces you to message queues, message brokers, AMQP, and RabbitMQ.
Chapter 2, Configuring RabbitMQ, covers the configuration opportunities in RabbitMQ in detail.
Chapter 3, Architecture and Messaging, goes over RabbitMQ components—Producer, Message Broker, Consumer and the Message. This chapter provides learning opportunities for interoperability, heterogeneous integration, scalability, and so on.
Chapter 4, Clustering and High Availability, provides opportunities to tune RabbitMQ for high availability, federation, and much more.
Chapter 5, Plugins and Plugin Development, highlights several important features of RabbitMQ and gives an insight into creating your own plugin.
Chapter 6, Managing Your RabbitMQ Server, covers in detail the management of RabbitMQ using the command-line tools, management plugin, and rest API.
Chapter 7, Monitoring, discusses the methods to monitor RabbitMQ instances through a command line, management plugin, and well-known monitoring software.
Chapter 8, Security in RabbitMQ, covers the details about potential security vulnerabilities and securing RabbitMQ.
Chapter 9, Java RabbitMQ Client Programming, talks about developing RabbitMQ client using the Java platform.
Chapter 10, Ruby Client Programming, talks about developing a RabbitMQ client using Ruby.
Chapter 11, Python Client Programming, demonstrates developing a RabbitMQ client using Python.
For this book, you need an understanding of software development—how to write functions, classes, and debugging skills. Moreover, you also need hands-on experience in developing applications.
If you are an intermediate-level RabbitMQ developer and want to achieve professional-level expertise in the subject, this book is for you. You'll also need to have a decent understanding of message queuing.
In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We have the dpkg dependency management tool for installing RabbitMQ."
A block of code is set as follows:
tcp {
upstream cluster {
# simple round-robin
server 192.168.1.1:5672;
server 192.168.1.2:5672;
check interval=3000 rise=2 fall=5 timeout=1000;
}
server {
listen 5672;
proxy_pass cluster;
}
}Any command-line input or output is written as follows:
mastering-rabbitmq1$ rabbitmqctl cluster_status Cluster status of node rabbit@mastering-rabbitmq1 ... [{nodes,[{disc,[rabbit@mastering-rabbitmq1]}]}, {running_nodes,[rabbit@mastering-rabbitmq1]}, {partitions,[]}] ...done.
New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "In Windows, we should use the environment variables of the System Properties for modifying the environment variables of RabbitMQ."
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