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

Speeding up the test suite

There are not many tests in the actual application, but they’re all pretty fast. While your project will grow, the tests will become more and more time-consuming and more annoying to run. It is not uncommon to have a test suite that runs in a span of 15 minutes, but that is too much time! Now, we are going to see how to speed up a test run to avoid a situation like this, by parallelizing the tests’ executions and evaluating the pitfall this technique carries.

Running tests in parallel

To improve our test run, we need to update the test script in package.json:

"test": "tap test/**/**.test.js",

The npm test command will execute all the files in the test/ folder that ends with the test.js suffix. The cool thing is that each file runs in parallel on a dedicated Node.js process! That being said, it hides some considerations you must be aware of when writing tests:

  • process.env is different for every test file...