Book Image

Building Microservices with Go

By : Nic Jackson
Book Image

Building Microservices with Go

By: Nic Jackson

Overview of this book

Microservice architecture is sweeping the world as the de facto pattern to build web-based applications. Golang is a language particularly well suited to building them. Its strong community, encouragement of idiomatic style, and statically-linked binary artifacts make integrating it with other technologies and managing microservices at scale consistent and intuitive. This book will teach you the common patterns and practices, showing you how to apply these using the Go programming language. It will teach you the fundamental concepts of architectural design and RESTful communication, and show you patterns that provide manageable code that is supportable in development and at scale in production. We will provide you with examples on how to put these concepts and patterns into practice with Go. Whether you are planning a new application or working in an existing monolith, this book will explain and illustrate with practical examples how teams of all sizes can start solving problems with microservices. It will help you understand Docker and Docker-Compose and how it can be used to isolate microservice dependencies and build environments. We finish off by showing you various techniques to monitor, test, and secure your microservices. By the end, you will know the benefits of system resilience of a microservice and the advantages of Go stack.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Writing Dockerfiles


Dockerfiles are the recipes for our images; the define the base image, software to be installed and give us the capability to set the various structure that our application needs.

In this section, we are going to look at how we can create a Docker file for our example API. Again, this is not going to be a comprehensive overview of how Dockerfiles work as there are many books and online resources that exist for that explicit purpose. What we will do is to look at the salient points that will give us the basics.

The first thing we are going to do is build our application code as when we package this into a Docker file we will be executing a binary, not using the go run command. The image we are going to create will have only the software installed that we need to run our application. Limiting the software installed is a Docker best practice when creating images as it reduces the attack surface by only including what is necessary.

Building application code for Docker

We are...