Building APIs with Node.js


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Building APIs with Node.js

About the Book

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Currently, we live in a period in which the majority of users use different types of devices to connect to the internet. The most popular devices are smartphones, tablets and notebooks. Developing systems for different types of devices requires the work of building web services, also known by the name of API (Application Program Interface).

Basically, the APIs are back-end systems that are designed to work only with data in a centralized manner, allowing client-side applications to be developed separately, to have a unique interfaces to the final user. These client-side applications are typically mobile apps, desktop applications or web apps.

Since 2010 Node.js increasingly proved to be an excellent platform to solve many problems, especially for building REST APIs. The single-thread architecture that performs non-blocking I/O running on top of JavaScript - which is a very present language in all current browsers - showed good performance in the processing of many kind of applications.

There are some cases of large companies, such as LinkedIn and PayPal, which significantly saved expenses with servers migrating some of their projects to Node.js.

In addition, another advantage of using the Node.js, which captivated many developers, is the low learning curve. After all, who has worked with web development already have at least a basic understanding of the JavaScript language.

In this book, you'll learn in practice how to build scalable APIs in Node.js platform through writing elegant codes using ECMAScript 2015 (aka ES6) and some popular frameworks like Express, Passport, ApiDoc, Mocha, Helmet and more.

The project will be integrated with a SQL database through Sequelize.js and, in the end, you'll build a single page application using only Vanilla JavaScript to consumes the API's data.

See also the portuguese version of this ebook: Construindo APIs com Node.js

About the Author

Caio Ribeiro Pereira
Caio Ribeiro Pereira

Developer, writter, blogger and maker.

Reader Testimonials

Irvin Waldman
Irvin Waldman

Senior Architect

If you desire to take you Node skills to the next level, then Caio’s book is for you! As an experienced software developer, I had many questions regarding how to build an enterprise grade Node application. However it's almost impossible to find a book with real working examples of how to deal with security, API doc, testing, project structure, best practice patterns. Caio addresses these head on. For just the price of a few lattes, you have a cookbook to take your Node skills to the next level!

Table of Contents

  • Preface
    • The current web application scene
    • Who is this book for?
    • How should I study it?
  • Introduction to Node.js
    • What’s Node.js?
    • Main features
    • Why do I need to learn Node.js?
  • Setting up the environment
    • Node.js standard installation
    • Node.js installation via NVM
  • Managing modules with NPM
    • What does NPM do?
    • Top NPM commands
    • Understanding package.json file
    • NPM Task automation
  • Building an API
    • Introduction to Express
    • Getting started the pilot project
    • Implementing a simple and static resource
    • Arranging the loading of modules
  • Working with SQL databases
    • Introduction to SQLite3 and Sequelize
    • Setting up Sequelize
    • Creating models
  • CRUDify API resources
    • Organizing tasks routes
    • Listing tasks via GET
    • Creating tasks via POST
    • Finding a task via GET
    • Updating a task via PUT
    • Deleting a task via DELETE
    • Refactoring some middlewares
    • Creating user’s endpoints
    • Testing endpoint’s access using Postman
  • Authenticating users
    • Introduction to Passport.js and JWT
    • Installing Passport and JWT
    • Implementing JWT authentication
    • Generating tokens for authenticated users
  • Testing the application - Part 1
    • Introduction to Mocha
    • Setting up the test environment
    • Testing the authentication endpoint
  • Testing the application - Part 2
    • Testing task’s endpoints
    • Testing user’s endpoints
  • Documenting the API
    • Introduction to ApiDoc.js
    • Documenting token generation
    • Documenting user’s resource
    • Documenting task’s resource
  • Preparing the production environment
    • Introduction to CORS
    • Enabling CORS in the API
    • Generating logs
    • Configuring parallel processing using cluster module
    • Compacting requests using GZIP middleware
    • Installing SSL support to use HTTPS
    • Armoring the API with Helmet
  • Building the client-side app - Part 1
    • Setting up the app environment
    • Creating signin and signup views
    • Writing signin and signup components
  • Building the client-side app - Part 2
    • Views and components for task’s CRUD
    • Views and components for logged users
    • Creating the main menu
    • Treating all screen’s events

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