🌍 Server Configuration Guide for Different Languages & Frameworks

🚀 How Different Languages Serve Applications

Language / Framework	How It Serves	Alternative Ways
Node.js (Express, NestJS)	Runs on a port (e.g., 3000)	Use Nginx as a reverse proxy
Python (Flask, Django)	Runs on a port (5000, 8000)	Use Gunicorn + Nginx for production
Java (Spring Boot)	Runs on a port (8080)	Deploy with Apache Tomcat
C# (.NET)	Runs on a port (5000, 5001)	Use IIS or Nginx as a reverse proxy
Go (Golang)	Runs on a port (8080, 8000)	Use Caddy or Nginx as a reverse proxy
Ruby (Rails, Sinatra)	Runs on a port (3000)	Use Puma or Nginx for production
PHP	Serves via Apache/Nginx	php -S localhost:8000 for local dev
Rust (Rocket, Actix)	Runs on a port (8000, 8080)	Use Nginx as a reverse proxy
C++ (Crow, Wt)	Runs on a port (18080, 8080)	Can serve static files, use Nginx proxy
React / Vue / Angular	Builds to static files (dist/, build/)	Serve with Nginx, Apache, Netlify
Next.js / Nuxt.js / SvelteKit	Runs on a port in SSR mode, static in SSG mode	Use Nginx for SSR or deploy statically
Static HTML, CSS, JS	Directly served as static files	Use Nginx, Apache, Vercel, Netlify

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🎯 Common Default Ports for Different Languages

Language/Framework	Default Port	Can Be Changed?	How to Change It?
Node.js (Express, NestJS)	3000	✅ Yes	app.listen(4000);
Python (Flask)	5000	✅ Yes	app.run(port=8080)
Python (Django)	8000	✅ Yes	python manage.py runserver 8081
Python (FastAPI)	8000	✅ Yes	uvicorn main:app --port 8082
Java (Spring Boot)	8080	✅ Yes	server.port=9090 in application.properties
C# (.NET Core)	5000, 5001 (HTTPS)	✅ Yes	dotnet run --urls http://localhost:7000
Go (Golang HTTP server)	8080	✅ Yes	http.ListenAndServe(":9090", nil)
Rust (Rocket, Actix)	8000	✅ Yes	ROCKET_PORT=9090 or in code
Ruby (Rails, Sinatra)	3000	✅ Yes	rails server -p 4000
PHP (Built-in Server)	8000	✅ Yes	php -S localhost:9000
C++ (Crow, Wt)	18080	✅ Yes	Change in code app.port(9095).run();

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🛠️ Nginx Configuration for Different Languages

📌 When to Use Different Nginx Configurations?

Config Type	When to Use	Example
Port Number (listen)	When Nginx listens for requests or proxies traffic	listen 80;
Build Path (root)	When serving a frontend app (React/Vue/Angular)	root /var/www/html/myapp/dist;
Public Path (root)	When serving public assets (images, CSS, JS)	root /var/www/html/myapp/public;

🌐 Example Nginx Config for Backend Apps (Node.js, Python, Java, etc.)

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://localhost:3000; # Change the port accordingly
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
    }
}

🎨 Example Nginx Config for Frontend Apps (React, Vue, Angular, etc.)

server {
    listen 80;
    server_name example.com;

    root /var/www/html/myapp/dist; # Serve frontend build files
    index index.html;

    location / {
        try_files $uri /index.html;
    }
}

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📋 Final Thoughts

✅ Backend apps (Node.js, Flask, Go, Java, etc.) → Use proxy_pass http://localhost:<port>;
✅ Frontend apps (React, Vue, Angular, etc.) → Serve from root /var/www/html/myapp/dist;
✅ PHP apps (Laravel, WordPress, etc.) → Serve from root /var/www/html/public;

This guide should help you configure and manage different web applications efficiently! 🚀🔥

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📌 Author: Asif Ahmad Khan
📅 Last Updated: March 2025
🛠 Contributions: Feel free to improve this guide!🎉