Hapi js Overview

In this article, we’ll see Hapi js Overview.

In the realm of Node.js frameworks, Hapi.js stands out as a versatile and robust choice for building web applications. Known for its simplicity, extensibility, and powerful plugin system, Hapi.js provides developers with a delightful experience when crafting web services and APIs.

What is Hapi js

Hapi is a Node.js framework for “building powerful, scalable applications, with minimal overhead and full out-of-the-box functionality”.

It provides a rich set of features for web and mobile applications and is designed to make it easy to build, test, and maintain applications. Its features include support for input validation, caching, authentication, and more. Developers widely use it to build robust and scalable web applications.

It is Originally developed to handle Walmart’s Black Friday scale. Hapi continues to be the proven choice for enterprise-grade backend needs.

Whether you are building a simple API for your website/mobile app or a large-scale, cache-heavy, secure e-commerce website, Hapi has you covered. Hapi will help your server develop quickly with its wide range of configurable options.

Hapi js Benefits

  • Modular Architecture: Hapi js embraces a modular architecture, allowing developers to add and remove modules as needed. This approach promotes code reusability and reduces the risk of dependency conflicts. Hapi.js offers a rich set of plugins, including authentication, caching, validation, and more. With these plugins, developers can extend the framework’s functionality and build complex applications without having to write custom code.
  • Configuration-Driven Development: Hapi js follows a configuration-driven development approach, where developers define their application’s behavior through configuration files. This approach reduces the need for boilerplate code and makes it easier to manage application configuration across multiple environments. Hapi.js provides a rich set of configuration options, including routing, caching, and security settings, making it easy to customize the framework to meet specific application requirements.
  • Comprehensive Routing: Routing is a critical aspect of web application development, and Hapi.js excels in this area. The framework provides a comprehensive routing API that enables developers to define routes and their associated handlers with ease. Hapi.js also offers advanced routing features, including route parameters, query string parameters, and route prerequisites. With these features, developers can build complex routing logic and handle a variety of use cases.
  • Robust Input Validation: Input validation is essential for ensuring the security and reliability of web applications. Hapi.js provides a powerful validation API that simplifies the process of validating user input. The framework offers a wide range of built-in validation rules, including string validation, number validation, and email validation. Hapi.js also allows developers to define custom validation rules and plugins, providing flexibility and extensibility.
  • Server-Side Rendering: Server-side rendering is a critical feature for building SEO-friendly web applications. Hapi js provides built-in support for server-side rendering through the Vision plugin. With Vision, developers can render views using popular templating engines like Handlebars and Jade. The plugin also provides advanced features like layout inheritance, partials, and helpers, making it easy to build complex server-side rendered views.
  • Extensible Authentication and Authorization: Authentication and authorization are critical for building secure web applications. Hapi.js provides a comprehensive authentication and authorization API that simplifies the process of implementing these features. The framework offers built-in support for popular authentication schemes like Basic Authentication, JSON Web Tokens (JWT), and OAuth 2.0. Additionally, Hapi.js allows developers to implement custom authentication and authorization schemes and integrate with third-party authentication providers.
  • Scalability and Performance: Hapi js is designed to handle high levels of traffic and scale horizontally. The framework provides built-in support for clustering, allowing developers to distribute the load across multiple instances of the application. Additionally, Hapi.js offers a caching API that enables developers to cache frequently accessed data and reduce the load on the database. With these features, developers can build high-performance applications that can handle a large number of concurrent requests.

Hapi js Installation:

You must have preinstalled the latest version of the Node.js framework.

1). Create a project directory “my-hapi-app” and go to “my-hapi-app” by running the “cd my-hapi-app” command in your
terminal

2). Run: the “npm init” command in your terminal and follow the prompts. This will generate a package.json file for
you.

3). Run “npm install @hapi/hapi” to install the latest version of hapi in your project.

4). Install “nodemon” package by running the “npm i nodemon -g” command in your terminal

5). Create an index.js file and add the following code to file :

'use strict';

const Hapi = require('@hapi/hapi');

const init = async () => {

const server = Hapi.server({
port: 3000,
host: 'localhost'
});

server.route({
method: 'GET',
path: '/',
handler: (request, h) => {

return 'Hello World!';
}
});

await server.start();
console.log('Server running on %s', server.info.uri);
};

process.on('unhandledRejection', (err) => {

console.log(err);
process.exit(1);
});

init();

6). To see the output, we’ll use nodemon. Run the “nodemon index.js” command in your terminal and open “localhost:3000”
in your browser to see the output. see below screenshot:

Hapi Application Output

You can follow the below video for the whole Hapi installation process if you need.

Reference :

Hapi js is a powerful and extensible framework that simplifies the process of building web applications. Its modular architecture, configuration-driven development, comprehensive routing, robust input validation, server-side rendering, extensible authentication and authorization, and scalability and performance make it an attractive choice for modern web development. Whether you are building a small-scale application or a large one. I hope this article helps you to understand Hapi js Overview.

Last updated on May 17th, 2023.