In this chapter, we looked at experimenting with utilizing microservices as a way to dissect your app into separate domains of responsibility. In this example, we delegated the e-mail aspect of our application to another service written in Python.

We did this to utilize the concept of microservices or interconnected smaller applications as callable networked functions. This ethos is driving a large part of the Web of late and has myriad benefits and drawbacks.

In doing this, we implemented a message queue, which operates as the backbone of our communications system, allowing each component to speak to the other in a reliable and repeatable way. In this case, we used a Python application to read messages sent from our Go application across RabbitMQ and take that e-mail data and process it.

In Chapter 8, Logging and Testing, we'll focus on logging and testing, which we can use to extend the microservices concept so that we can recover from errors and understand where things might go awry...