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

Handling boot and plugin errors

This section will analyze some of the most common Fastify boot errors and how we can deal with them. But what are boot errors anyway? All errors thrown during the initial load of our application, before the ready event is dispatched and the server listens for incoming connections, are called boot errors.

These errors are usually thrown when something unexpected happens during the registration of a plugin. If there are any unhandled errors during a plugin registration, Fastify, with the help of Avvio, will notify us and stop the boot process.

We can distinguish between two error types:

  • Errors that we can recover from
  • Errors that are not recoverable by any means

First, we will look at the most common non-recoverable error, ERR_AVVIO_PLUGIN_TIMEOUT, which usually means we forgot to tell Fastify to continue with the boot process.

Then, we will learn about the tools Fastify gives us to recover from other kinds of errors. It is...