Popular Backend Frameworks

1. Introduction

Backend frameworks are essential in web development, as they provide the server-side logic and handle database interactions, user authentication, and application routing. This lesson will explore some of the most popular backend frameworks and their key features.

2. Popular Frameworks

const express = require('express');
const app = express();

app.get('/', (req, res) => {
    res.send('Hello World!');
});

app.listen(3000, () => {
    console.log('Server is running on http://localhost:3000');
});

from django.http import HttpResponse

def hello(request):
    return HttpResponse("Hello World!")

class WelcomeController < ApplicationController
    def index
        render plain: "Hello World!"
    end
end

from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello():
    return "Hello World!"

3. Best Practices

When working with backend frameworks, consider the following best practices:

• Use environment variables to manage sensitive information.
• Implement proper error handling and logging.
• Follow RESTful principles for API design.
• Utilize middleware for cross-cutting concerns (e.g., authentication, logging).
• Write unit tests to ensure code quality.

4. FAQ