Book Image

Mastering Go – Third Edition - Third Edition

By : Mihalis Tsoukalos
5 (2)
Book Image

Mastering Go – Third Edition - Third Edition

5 (2)
By: Mihalis Tsoukalos

Overview of this book

Mastering Go is the essential guide to putting Go to work on real production systems. This freshly updated third edition includes topics like creating RESTful servers and clients, understanding Go generics, and developing gRPC servers and clients. Mastering Go was written for programmers who want to explore the capabilities of Go in practice. As you work your way through the chapters, you’ll gain confidence and a deep understanding of advanced Go concepts, including concurrency and the operation of the Go Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You’ll also improve your understanding of Go internals to optimize Go code and use data types and data structures in new and unexpected ways. This essential Go programming book will also take you through the nuances and idioms of Go with exercises and resources to fully embed your newly acquired knowledge. With the help of Mastering Go, you’ll become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.
Table of Contents (17 chapters)
14
Other Books You May Enjoy
15
Index

Creating a functional RESTful server

This section illustrates how to develop a RESTful server in Go given a REST API. The biggest difference between the presented RESTful service and the phone book application created in Chapter 8, Building Web Services, is that the RESTful service in this chapter uses JSON messages everywhere, whereas the phone book application interacts and works using plain text messages. If you are thinking of using net/http for the implementation of the RESTful server, please do not do so! This implementation uses the gorilla/mux package, which is a much better choice because it supports subrouters—more about that in the Using gorilla/mux subsection.

The purpose of the RESTful server is to implement a login/authentication system. The purpose of the login system is to keep track of the users who are logged in, as well as their permissions. The system comes with a default administrator user named admin—the default password is also admin and you...