How Does Difference Between L1 L2 and L3 Cache Memory Work?

Imagine your brain is like a super-fast library, and every time you need information, it sends a message to a robot who goes to get the book from a shelf, faster shelves are closer to you.

L1 cache is like the first shelf right next to you, super fast but can only hold a few books. If the robot has to go further away for more books, that’s the L2 cache, which is like a nearby room with more shelves. It's still pretty fast, but not as close.

If the robot needs even more books and goes all the way to another part of the library, maybe even outside, that's the L3 cache. It holds lots of books but takes longer for the robot to get them.

So, when your brain is working on a hard problem, it uses these shelves to store information it needs often. The closer the shelf (like L1), the faster your brain can access the info, just like how you can grab a book from the closest shelf in no time!