What is Fastify?

Fastify is a cutting-edge open-source web framework for Node.js, known for its emphasis on speed, efficiency, and an excellent developer experience. Fastify is part of the OpenJS Foundation.

Fastify Activity

Here is a snapshot of Fastify’s activity since its creation in 2016:

• \>30,000 GitHub stars

• \>5,300 commits

• \>2,200 forks

• \>800 PR creators

Users include Microsoft, Google, Alibaba, AWS, Facebook, Net-a-Porter, Thoughtworks and Tencent.

Downloads

In 2023, Fastify was downloaded over 58 million times and doubled its downloads when compared to 2022.

Lead maintainers

Fastify has four lead maintainers: Matteo Collina, Tomas Della Vedova, Manuel Spigolon and James Sumners, as well as an additional 15 collaborators. The team is actively maintaining Fastify, with regular updates and a vibrant community

The team is actively maintaining Fastify, with regular updates and a vibrant community.

Why choose Fastify?

Built with a focus on performance, Fastify offers lightning-fast routing, built-in input validation, and serialization capabilities to enhance your development process. Whether you’re building APIs, microservices, or full-scale web applications, Fastify allows you to deliver exceptional user experiences at scale.

Key benefits include:

• Developer-centric design

• Unmatched performance and real-time metrics

• Built-in validation and serialization

• Built-in logging

• Vast plugin ecosystem

Resources to get you started

• A "fast" Introduction to Fastify

• Getting started

• 1, 2, 3... Fastify!: How to route requests, write tests, and use the plugin system.

• Recommendations when using Fastify

• Fastify’s technical principles

• Using Fastify alongside popular serverless providers

• Deploying to Fastify

• Build a modular monolith with Fastify

• Extracting a route into its own Fastify Plugin

• Migrating a Fastify app to Platformatic Service

• How to deploy an Express app to Platformatic Cloud

• Building your first Route

• How to Validate API Responses in Fastify

• A Quick Guide to Plugins and Encapsulation with Fastify & Platformatic

• Quick-starting Hooks And Decorations with Fastify

Supercharging Fastify Development with Platformatic

Developed by the co-creator of Fastify, Platformatic is a backend development platform designed to extend the capabilities of the Fastify web framework. Learn more here.