What are stateless systems?

A stateless system is like a robot that forgets everything after you say one command.

Imagine you're playing with a toy robot. Every time you tell it to move forward, it just does that, no matter where it was before. It doesn’t remember if it turned left or right last time, or how many steps it already took. It only knows what you’re telling it now. That’s a stateless system.

Think of a vending machine. When you put in a coin and press a button, the machine gives you a snack, that's all. But if you walk away and come back later, the machine doesn’t remember which snack you chose before. It just waits for your next coin and button press.

In stateless systems, there’s no need to keep track of what happened before. Each action is fresh and new, like starting a game from scratch every time. That makes things simple and fast, even if you don’t remember where you left off!