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)

Introducing pq, a pure PostgreSQL database driver for Go

In Chapter 4, Simplifying RESTful Services with Popular Go Frameworks, we used a driver package called go-sqlite3 to work with SQLite3. In the same way, pq is a database driver package available for Go. We can install that library system-wide by using the go get command, as follows:

go get github.com/lib/pq

We can also use the dep tool to install this package. We'll use it in this example. Let's look at the steps for installation here:

  1. Create a new project directory called basicExample in GOPATH, as follows:
touch -p $GOPATH/src/github.com/git-user/chapter7/basicExample
  1. Now, traverse to the basicExample directory and use dep to install the pq package in the directory, like this:
dep init
dep ensure --add github.com/lib/pq

This creates a few configuration files and adds a package to the vendor in the same directory...