Before we get started
A quick, simple question: What happens if we don't use nginx?
- Of course, still working without using nginx....

Letโs say you run a FastAPI app:
- ๐ซ Without Nginx: Users connect directly to http://your-server:8000
- โ
With Nginx:
- Nginx listens on port 80/443 โ forwards traffic to http://localhost:8000
- You can add HTTPS, caching, and load balancing โ all without touching FastAPI code.
โก Another important thing!
You should know about Basic Networking Concepts.
๐ง What is Nginx?

Nginx is a web server โ software that delivers web pages to users. But itโs more than that: it can act as a reverse proxy, load balancer, and HTTP cache.
โ๏ธ What Nginx Actually Does
- Reverse proxy โ sends client requests to backend apps
- Web server โ serves static content (HTML, CSS, JS, images)
- Load balancer โ splits traffic between multiple servers
- SSL/TLS terminator โ handles HTTPS encryption
- Cache โ stores responses to reduce backend load
๐ Related Document
๐ Last but not least
๐ง "Practice doesnโt make perfect. Perfect practice makes progress."
