ELI5: Explain Like I'm 5

Buffer (telecommunication)

Okay kiddo, imagine you are playing a game with your friend over the Internet. You click a button on your screen and it sends a message to your friend's screen. But sometimes, the message takes a long time to get to your friend's screen because the Internet is busy. This delay is called "lag."

A buffer is like a helper that helps you play your game smoothly even when there is lag. It stores extra messages, like your button clicks, before sending them to your friend's screen. So even if there is a delay or a lag, your game won't freeze or stop working.

Think of it like this: Imagine you are trying to catch a ball that someone is throwing to you. Sometimes, the ball comes too fast and you can't catch it. But if you have a big bucket next to you, you can catch the ball there first and then take your time to catch it with your hands. That bucket is like a buffer - it catches the ball (your button clicks) first and then gives you time to catch it (send it) to your friend's screen.