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)
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Updating the phone book application

This time the phone book application is going to work as a web service. The two main tasks that need to be performed are defining the API along with the endpoints and implementing the API. A third task that needs to be determined concerns data exchange between the application server and its clients. There exist four main approaches regarding data exchange:

  • Using plain text
  • Using HTML
  • Using JSON
  • Using a hybrid approach that combines plain text and JSON data

As JSON is explored in Chapter 10, Working with REST APIs, and HTML might not be the best option for a service because you need to separate the data from the HTML tags and parse the data, we are going to use the first approach. Therefore, the service is going to work with plain text data. We begin by defining the API that supports the operation of the phone book application.

Defining the API

The API has support for the following URLs: