Project design

Design the skeleton of the advanced final mini app.

Project: Advanced final

In this 5-lesson project you will build an advanced Node.js application. Each lesson adds one piece, and by the final lesson you have a working skeleton: an Express API, a database connection, WebSocket and security middleware.

All pieces come together in one app object. The project combines everything learned in the advanced level: an API with Express, database integration, real-time communication, and security. Each lesson's starting code contains the previous lesson's solution, so the skeleton grows step by step. The final lesson combines all pieces.

The design skeleton

The project skeleton: the express module, the app object and a root route. All later lessons add on top of this skeleton.

Example: const express = require("express"); const app = express(); app.get("/", (req, res) => res.json({ status: "ok" }));. This is a simple API skeleton. In the next lessons, a database connection, WebSocket and security middleware will be added. It is important that the skeleton is simple and readable; each lesson only adds one piece. This approach lets the project grow step by step.

Exercise Build the design skeleton

Import the express module. Create app. Define a root route with app.get("/", (req, res) => res.json({ status: "ok" })). Print "Design ready" with console.log.

Show example solution

const express = require("express");
const app = express();
app.get("/", (req, res) => res.json({ status: "ok" }));
console.log("Design ready");

Test yourself

What pieces does the project combine?
```
Express + DB + WebSocket + Security
```
- Express, DB, WebSocket and security
- Only require
- Only console.log
- Only JSON
Show answer

Express, DB, WebSocket and security — Express + DB + WebSocket + security combine.
Match each piece to its role

Express

API framework
DB

Stores data
WebSocket

Real-time
Security

Protects requests

Complete the express import line

const express = require(____);

Show answer

const express = require("express");

Next lesson: Express + DB

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies