MVC Architecture System Design (original) (raw)

Last Updated : 23 Jul, 2025

MVC(Model-View-Controller) Architecture is a fundamental design pattern in software development, separating an application into Model, View, and Controller components. This article explores its role in building robust, maintainable systems, emphasizing its benefits and implementation strategies.

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Important Topics to Understand MVC Architecture

What is MVC Architecture?

MVC (Model-View-Controller) architecture is a universal pattern of a structure in which an application is divided into three parts which are all dedicated to certain parts of the whole application. This pattern is normally used in software development to create organized and easy-to-maintain code. Here’s a deeper look at each component:

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Importance in System Design

The MVC architecture is significant in system design for the following reasons:

Key Components of MVC Architecture

Here are detailed explanations and examples for each of the key components of the MVC architecture:Here are detailed explanations and examples for each of the key components of the MVC architecture:

Benefits of MVC Architecture

MVC architecture offers several advantages:

Implementation Strategies

The proper application of the MVC architecture depends on the right planning and compliance with many standards. Here are some strategies to consider:

Some of the real life examples of MVC architecture

Several popular web frameworks implement the MVC architecture:

Challenges of MVC Architecture

Despite its benefits, MVC architecture can present some challenges:

Asynchronous Programming in MVC Architecture

In an MVC architecture, asynchronous programming can be implemented as follows:In an MVC architecture, asynchronous programming can be implemented as follows:

Several popular web frameworks implement the MVC architecture:

Example Implementation of MVC Architecture

Let’s consider a simple implementation of an MVC application for a booking system using Node.js with Express:

1. Model (models/booking.js)

JavaScript `

const mongoose = require('mongoose');

const bookingSchema = new mongoose.Schema({ user: String, hotel: String, date: Date, price: Number });

const Booking = mongoose.model('Booking', bookingSchema);

module.exports = Booking;

`

The Booking model defines the schema for a booking and interacts with the database to manage booking data.

2. View (views/bookings.ejs)

JavaScript `

Bookings

Bookings

`

The View displays a list of bookings using data passed from the Controller.

2. Controller (controllers/bookingController.js)

JavaScript `

const Booking = require('../models/booking');

exports.getBookings = async (req, res) => { try { const bookings = await Booking.find(); res.render('bookings', { bookings }); } catch (err) { res.status(500).send(err); } };

exports.createBooking = async (req, res) => { const { user, hotel, date, price } = req.body; const booking = new Booking({ user, hotel, date, price }); try { await booking.save(); res.redirect('/bookings'); } catch (err) { res.status(500).send(err); } };

`

The Controller retrieves booking data from the Model and passes it to the View, or it creates a new booking based on user input.

4. Routes (routes/bookings.js)

JavaScript `

const express = require('express'); const router = express.Router(); const bookingController = require('../controllers/bookingController');

router.get('/bookings', bookingController.getBookings); router.post('/bookings', bookingController.createBooking);

module.exports = router;

`

The bookings.js file defines the routes for the application, linking URLs to Controller actions.

5. Server Setup (app.js)

JavaScript `

const express = require('express'); const mongoose = require('mongoose'); const bookingRoutes = require('./routes/bookings'); const bodyParser = require('body-parser');

const app = express();

mongoose.connect('mongodb://localhost:27017/booking_system', { useNewUrlParser: true, useUnifiedTopology: true });

app.set('view engine', 'ejs'); app.use(bodyParser.urlencoded({ extended: true })); app.use(bookingRoutes);

app.listen(3000, () => { console.log('Server is running on port 3000'); });

`

The app.js file sets up the server, connects to the database, and uses the defined routes.

Explanation