Building web applications with Fastify

Fastify is a web framework inspired by other popular Node.js web frameworks, including Hapi and Express.js. As the name may suggest, Fastify focuses on minimizing performance overhead, but the framework also has developer experience in mind.

While Fastify can be used to create web applications, it really excels when you're building JSON-based APIs. In the recipe, we'll create a JSON-based API.

Getting ready

First, let's create a directory named fastify-app to hold our project. As we'll be using modules from npm, we'll also need to initialize a new project as follows:

$ mkdir fastify-app
$ cd fastify-app
$ npm init --yes

Now that we've initialized our project directory, we can move on to the recipe.

How to do it

In this recipe, we will create a web server with Fastify that responds on the / route with some JSON data:

1. Start by installing fastify:

   $ npm install fastify

2. Next, we'll...