Book Image

Building RESTful Web services with Go

By : Naren Yellavula
Book Image

Building RESTful Web services with Go

By: Naren Yellavula

Overview of this book

REST is an architectural style that tackles the challenges of building scalable web services and in today's connected world, APIs have taken a central role on the web. APIs provide the fabric through which systems interact, and REST has become synonymous with APIs. The depth, breadth, and ease of use of Go, makes it a breeze for developers to work with it to build robust Web APIs. This book takes you through the design of RESTful web services and leverages a framework like Gin to implement these services. The book starts with a brief introduction to REST API development and how it transformed the modern web. You will learn how to handle routing and authentication of web services along with working with middleware for internal service. The book explains how to use Go frameworks to build RESTful web services and work with MongoDB to create REST API. You will learn how to integrate Postgres SQL and JSON with a Go web service and build a client library in Go for consuming REST API. You will learn how to scale APIs using the microservice architecture and deploy the REST APIs using Nginx as a proxy server. Finally you will learn how to metricize a REST API using an API Gateway. By the end of the book you will be proficient in building RESTful APIs in Go.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Summary 


In this chapter, we first introduced the HTTP router. We tried to build a basic application using Go's http package. Then we briefly discussed ServeMux, with an example. We saw how to add multiple handlers to multiple routes. Then we introduced a lightweight router package called httprouter. httprouter allows developers to create scalable routes, with the option of parsing parameters passed in the URL path. We can also serve files over the HTTP using httprouter. We built a small service to get the Go version and file contents (read-only). That example can be extended to any system information.

Next, we introduced the popular Go routing library: Gorilla Mux. We discussed how it is different from httprouter and explored its functionality by implementing solid examples. We explained how Vars can be used to get path parameters and r.URL.Query to parse query parameters. Then we discussed SQL injection and how it can happen in our applications. We gave a few pointers on how to avoid it...