Book Image

Hands-On Microservices with Kubernetes

By : Gigi Sayfan
Book Image

Hands-On Microservices with Kubernetes

By: Gigi Sayfan

Overview of this book

Kubernetes is among the most popular open source platforms for automating the deployment, scaling, and operations of application containers across clusters of hosts, providing a container-centric infrastructure. Hands-On Microservices with Kubernetes starts by providing you with in-depth insights into the synergy between Kubernetes and microservices. You will learn how to use Delinkcious, which will serve as a live lab throughout the book to help you understand microservices and Kubernetes concepts in the context of a real-world application. Next, you will get up to speed with setting up a CI/CD pipeline and configuring microservices using Kubernetes ConfigMaps. As you cover later chapters, you will gain hands-on experience in securing microservices and implementing REST, gRPC APIs, and a Delinkcious data store. In addition to this, you’ll explore the Nuclio project, run a serverless task on Kubernetes, and manage and implement data-intensive tests. Toward the concluding chapters, you’ll deploy microservices on Kubernetes and learn to maintain a well-monitored system. Finally, you’ll discover the importance of service meshes and how to incorporate Istio into the Delinkcious cluster. By the end of this book, you’ll have gained the skills you need to implement microservices on Kubernetes with the help of effective tools and best practices.
Table of Contents (16 chapters)

Unit testing

Unit testing is the easiest type of testing to incorporate into your codebase, yet it brings a lot of value. When I say it's the easiest, I take it for granted that you can use best practices such as proper abstraction, separation of concerns, dependency injection, and so on. There is nothing easy about trying to test a spaghetti codebase!

Let's talk briefly about unit testing in Go, the Ginkgo test framework, and then review some unit tests in Delinkcious.

Unit testing with Go

Go is a modern language and recognizes the importance of testing. Go encourages that for each foo.go file you have, to have foo_test.go. It also provides the testing package, and the Go tool has a test command. Let's look...