Build Messaging Between Ruby/Rails Applications with ActiveMQ

One of the tools that are rarely covered in the Ruby/Rails world are the message brokers (probably because they mostly written in Java). Everyone are familiar mostly with background jobs processing, but message brokers offer a more flexible approach to asynchronous execution. For example, you can create a message from one application and process it in another and continue executing without waiting for the response.Some benefits that you get at the architectural level: Fault Tolerance, Guaranteed delivery, Asynchronous communication(through Publish/Subscribe pattern), Loosely coupling, etc.One of the messaging brokers that I used is ActiveMQ. ActiveMQ provides most of these features and I will consider building communication using this broker as an example.