Book Image

Accelerating Server-Side Development with Fastify

By : Manuel Spigolon, Maksim Sinik, Matteo Collina
Book Image

Accelerating Server-Side Development with Fastify

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

Routing to the endpoint

Routing is the phase where Fastify receives an HTTP request, and it must decide which handler function should fulfill that request. That’s it! It seems simple, but even this phase is optimized to be performant and to speed up your server.

Fastify uses an external module to implement the router logic called find-my-way ( All its features are exposed through the Fastify interface so that Fastify will benefit from every upgrade to this module. The strength of this router is the algorithm implemented to find the correct handler to execute.

The router under the hood

You might find it interesting that find-my-way implements the Radix-tree data structure, starting from the route’s URLs. The router traverses the tree to find the matched string URL whenever the server receives an HTTP request. Every route, tracked into the tree, carries all the information about the Fastify instance it belongs to.