Compression middleware in Node.js - Mini Project: Build & Apply

Compression Middleware Setup in Node.js

📖 Scenario: You are building a simple Node.js server that sends text responses. To make your server faster and save bandwidth, you want to add compression to the responses.

🎯 Goal: Learn how to add compression middleware to a Node.js server using the compression package. You will create a basic server, configure compression, and apply it to all responses.

📋 What You'll Learn

Create a basic Node.js server using Express

Install and import the compression middleware

Configure compression with default settings

Apply compression middleware to the Express app

💡 Why This Matters

🌍 Real World

Compression middleware is used in web servers to reduce the size of responses sent to browsers. This makes websites load faster and saves data.

💼 Career

Understanding middleware like compression is important for backend developers to optimize server performance and improve user experience.

1

Create a basic Express server

Create a file and write code to import express and create an Express app called app. Then add a route / that sends the text 'Hello World'. Finally, listen on port 3000.

Node.js

import express from 'express';
const app = express();

// Your code here

Need a hint?

Use import express from 'express' to import Express. Create the app with express(). Use app.get for the route and app.listen(3000) to start the server.

2

Import the compression middleware

Add an import statement to import compression from the compression package.

Node.js

import express from 'express';
import compression from 'compression';
const app = express();

// Your code here

Need a hint?

Use import compression from 'compression' to import the compression middleware.

3

Configure compression middleware

Create a variable called compressionMiddleware and set it to the result of calling compression() with no arguments to use default compression settings.

Node.js

import express from 'express';
import compression from 'compression';
const app = express();

// Your code here

Need a hint?

Call compression() and assign it to compressionMiddleware to prepare the middleware.

4

Apply compression middleware to the app

Use app.use(compressionMiddleware) to apply the compression middleware to all routes in the Express app.

Node.js

import express from 'express';
import compression from 'compression';
const app = express();

const compressionMiddleware = compression();

// Your code here

Need a hint?

Use app.use(compressionMiddleware) before defining routes to enable compression for all responses.