Book Image

Accelerating Server-Side Development with Fastify

By : Manuel Spigolon, Maksim Sinik, Matteo Collina
5 (1)
Book Image

Accelerating Server-Side Development with Fastify

5 (1)
By: Manuel Spigolon, Maksim Sinik, Matteo Collina

Overview of this book

This book is a complete guide to server-side app development in Fastify, written by the core contributors of this highly performant plugin-based web framework. Throughout the book, you’ll discover how it fosters code reuse, thereby improving your time to market. Starting with an introduction to Fastify’s fundamental concepts, this guide will lead you through the development of a real-world project while providing in-depth explanations of advanced topics to prepare you to build highly maintainable and scalable backend applications. The book offers comprehensive guidance on how to design, develop, and deploy RESTful applications, including detailed instructions for building reusable components that can be leveraged across multiple projects. The book presents guidelines for creating efficient, reliable, and easy-to-maintain real-world applications. It also offers practical advice on best practices, design patterns, and how to avoid common pitfalls encountered by developers while building backend applications. By following these guidelines and recommendations, you’ll be able to confidently design, implement, deploy, and maintain an application written in Fastify, and develop plugins and APIs to contribute to the Fastify and open source communities.
Table of Contents (21 chapters)
Part 1:Fastify Basics
Part 2:Build a Real-World Project
Part 3:Advanced Topics

Adding new behaviors to routes

At the beginning of this chapter, we learned how to use the routeOptions object to configure a route, but we did not talk about the config option!

This simple field gives us the power to do the following:

  • Access the config in the handler and hook functions
  • Implement the Aspect-Oriented Programming (AOP) that we are going to see later

How does it work in practice? Let’s find out!

Accessing the route’s configuration

With the routerOption.config parameter, you can specify a JSON that contains whatever you need. Then, it is possible to access it later within the Request component in the handlers or hooks’ function through the context.config field:

async function operation (request, reply) {
  return request.context.config
app.get('/', {
  handler: operation,
  config: {
    hello: 'world'

In this way, you can create...