Learn FASTIFY with Real Code Examples

Install Node.js 16+

Initialize project with `npm init`

Install Fastify via `npm install fastify`

Create main server file (e.g., `server.js`)

Run server with `node server.js` or nodemon

Install Node.js 16+

Initialize project with npm

Install Fastify and plugins

Configure development tools (nodemon, ESLint)

Verify server runs locally

package.json - project dependencies

server.js - main server file

routes/ - route definitions

plugins/ - reusable Fastify plugins

schemas/ - JSON validation schemas

npm init -> initialize project

npm install fastify -> install Fastify

node server.js -> run server

nodemon server.js -> auto-reload

npm install --save-dev typescript -> add TypeScript support

i18n plugin for multi-language responses

Supports UTF-8 encoding

Serve locale-specific data per request

Integrates with translation libraries

Used globally in multilingual applications

Framework-agnostic for clients

Supports CORS via plugin

Accessible via HTTP clients

Works on all Node.js-supported platforms

Middleware ensures security and headers

Not handled - backend framework only

Serve static files or templates

Integrate with frontend frameworks

Respond with JSON for APIs

Dynamic pages via template engines if needed

Stateless by default

Sessions via JWT or cookie plugins

Encapsulation using plugins

Database for persistent state

Cache with Redis or memory stores

Parse JSON and URL-encoded payloads

Validate input using JSON schemas

Connect to SQL/NoSQL databases

Cache frequently accessed data

Log requests and responses with Pino