Book Image

Hands-On RESTful Web Services with Go - Second Edition

By : Naren Yellavula
Book Image

Hands-On RESTful Web Services with Go - Second Edition

By: Naren Yellavula

Overview of this book

Building RESTful web services can be tough as there are countless standards and ways to develop API. In modern architectures such as microservices, RESTful APIs are common in communication, making idiomatic and scalable API development crucial. This book covers basic through to advanced API development concepts and supporting tools. You’ll start with an introduction to REST API development before moving on to building the essential blocks for working with Go. You’ll explore routers, middleware, and available open source web development solutions in Go to create robust APIs, and understand the application and database layers to build RESTful web services. You’ll learn various data formats like protocol buffers and JSON, and understand how to serve them over HTTP and gRPC. After covering advanced topics such as asynchronous API design and GraphQL for building scalable web services, you’ll discover how microservices can benefit from REST. You’ll also explore packaging artifacts in the form of containers and understand how to set up an ideal deployment ecosystem for web services. Finally, you’ll cover the provisioning of infrastructure using infrastructure as code (IaC) and secure your REST API. By the end of the book, you’ll have intermediate knowledge of web service development and be able to apply the skills you’ve learned in a practical way.
Table of Contents (16 chapters)

grequests a REST API package for Go

The developers who worked on Python know about the Requests library. It is a clean, short library that is not included in the standard library of Python.

The Go grequests package is inspired by Requests. It provides a simple set of functions, using which we can make API requests such as GET, POST, PUT, and DELETE from our Go code. Using grequests allows us to encapsulate the in-built HTTP request and response.

Create the project directory and install grequests using the dep tool:

mkdir -p $GOPATH/src/github.com/git-user/chapter8/requestExample/
touch
$GOPATH/src/github.com/git-user/chapter8/requestExample/
basicRequest.go

To install the grequests package for Go, run the following dep command:

dep init
dep ensure --add github.com/levigross/grequests

Now, let's write a basic program illustrating the use of the grequests library to make a GET...