What are synchronous or asynchronous notification mechanisms?

Imagine you're waiting for your favorite snack to be ready, that’s like notification mechanisms, which tell you when something is done.

There are two kinds: synchronous and asynchronous.

This is like waiting right there at the kitchen counter. You ask, “Is my snack ready yet?” The person making it checks and says, “Not quite,” or “Yes! Here you go!” You can't do anything else until they tell you. It’s like being in the same place and waiting for a direct answer, synchronous means things happen one after another, right in front of you.

This is more like getting a message when your snack is ready. You go play with your toys while the snack is making, and then someone says, “Your snack is ready!” You can come back whenever you want. It’s like being in different places, asynchronous means things happen independently, and you get told later. Imagine you're waiting for your favorite snack to be ready, that’s like notification mechanisms, which tell you when something is done.

There are two kinds: synchronous and asynchronous.