Book Image

Clojure Programming Cookbook

Book Image

Clojure Programming Cookbook

Overview of this book

When it comes to learning and using a new language you need an effective guide to be by your side when things get rough. For Clojure developers, these recipes have everything you need to take on everything this language offers. This book is divided into three high impact sections. The first section gives you an introduction to live programming and best practices. We show you how to interact with your connections by manipulating, transforming, and merging collections. You’ll learn how to work with macros, protocols, multi-methods, and transducers. We’ll also teach you how to work with languages such as Java, and Scala. The next section deals with intermediate-level content and enhances your Clojure skills, here we’ll teach you concurrency programming with Clojure for high performance. We will provide you with advanced best practices, tips on Clojure programming, and show you how to work with Clojure while developing applications. In the final section you will learn how to test, deploy and analyze websocket behavior when your app is deployed in the cloud. Finally, we will take you through DevOps. Developing with Clojure has never been easier with these recipes by your side!
Table of Contents (16 chapters)
Clojure Programming Cookbook
About the Authors
About the Reviewer

Using queues and topics in the RabbitMQ

RabbitMQ is a multiprotocol message broker and one of the most popular brokers. RabbitMQ is written in Erlang; however, it provides client libraries for some major language such as Java, .NET, Ruby, and Erlang. In this recipe, we will show you producers and consumers using Langohr, which supports AMQP 0-9.1.

Getting ready

Here we will look at how to set up RabbitMQ server and Langohr in the project.

Installing RabbitMQ

You need to install RabbitMQ, a multiprotocol messaging broker first. We will use a Docker image for RabbitMQ:

$ docker run -d --hostname my-rabbit --name some-rabbit rabbitmq:3

The following image shows the output of the preceding command:

Then, we will check to see the container for RabbitMQ is running as follows:

$ docker ps 

We can see the output in the following image, if the container launches successfully:

After launching the RabbitMQ container, we need to know the ip address of the container used by the client. To obtain...