How to link server side calculator to a web app

1 week ago 5
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Imagine your web app is a restaurant.

Your HTML CSS JavaScript on the frontend is the dining area where customers sit, look at menus and click buttons like “Calculate weird math thing”.

The server that does math is the kitchen where the chef actually cooks up the order and sends it back.

So what is Apache in this magical buffet?

Apache is the waiter.
It takes the request from the customer “Hey I want the answer to 123456 multiplied by a dinosaur”
It walks to the kitchen (your calculation program like Maxima, Python, whatever)
The kitchen cooks the answer
Apache brings the result back to the customer’s browser.

But your site is hosted by a professional hosting company, so what does that mean?

Professional hosting = the building where your restaurant sits.
They give you:

Servers
Bandwidth
Electricity
A fancy address like webcoolmathapp dot com

They are the landlord. They are not the chef. They sometimes provide a waiter (Apache) but your cooking app is still yours.

How do they connect?

Frontend (browser) → Sends a request

Apache (server software) → Receives the request

Your calculation program → Computes stuff

Apache → Sends result back

Browser → Shows answer like magic ✨

TLDR in one spicy line 🌶️

Hosting company gives you the building
Apache is the waiter
Your calculation script is the chef
Users are hungry

You just make sure the chef and waiter communicate and nobody starts a food fight 🍽️😁

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