An attempt to explain a system design concept – scaling from 0 to millions, like to a 10 year old.

Imagine you start a lemonade stand in your driveway.

At first, it’s just you. You have one table, one pitcher, and one box for money. When a kid comes by, you take their order, pour the lemonade, and take their money all by yourself.

This is exactly how a website starts: One computer doing everything.

But what happens when the whole neighborhood shows up? Here is how we grow (scale) your stand from one customer to a million!

Stage 1: The Super-Robot (Vertical Scaling)

Suddenly, 10 kids are in line! You are too slow. You can’t pour and count money fast enough.

So, you buy a Super-Robot suit. This suit lets you move 10 times faster, pour two cups at once, and calculate change instantly.

• This is called Vertical Scaling. You upgrade your single computer with a faster processor and more memory (RAM) so it can work harder.
• The Problem: Even the best robot suit has a limit. Eventually, the line gets too long again.

The normal iframe embed is not working. Here’s the link with the concept explained – https://princiya.github.io/system-design/lemonade.html