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 started our journey by understanding the basics of protocol buffers. Then, we came across the protocol buffers language, which has many types such as scalar, enumeration, and repeated types. We saw a few analogies between JSON and protocol buffers. We learned why protocol buffers are more memory efficient than the plain JSON data format. We defined a sample protocol buffer by simulating a network interface. The message keyword is used to define messages in a protocol buffer.

Next, we installed the protoc compiler to compile our files written in the protocol buffer language. Then, we saw how to compile a .proto file to generate a .go file. This Go file has all the structs and interfaces for the main program to consume. Next, we wrote a protocol buffer for an address book and person. We saw how to use grpc.Marshal to serialize Go structs into binary, transmittable data. We also found out that the conversion from protocol buffer to JSON and vice versa is very easily...