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

Exploring the JSON store in PostgreSQL


PostgreSQL >9.2 has a prominent feature 9.2" dbid="254735" called the JSON store. PostgreSQL introduced a new data type for storing the JSON data. PostgreSQL allows users to insert a jsonb field type, which holds the JSON string. It is quite useful in modeling the real-world data that has to be more flexible with the structure. PostgreSQL draws the best of both worlds by allowing us to store JSON strings as well as relational types.

In this section, we will try to realize a few of the JSON models that we defined for e-commerce websites in the previous chapters. But here, we will use the JSON field to store and retrieve items in PostgreSQL. For accessing PostgreSQL's JSON store, the normal pq library is very tedious. So, in order to handle that better, we can use an Object Relational Mapper (ORM) called GORM.

GORM, a powerful ORM for Go

This ORM has the API for all operations that can be done in the database/sql package. We can install GORM using this...