Fault tolerance

Okay kiddo, let me explain fault tolerance in a very simple way. You know when you play with your toys and sometimes they break, right? Well, just like toys, sometimes computers and machines can break too. Fault tolerance is like having a backup plan for when this happens, so that everything keeps working as it should.

Let's say you have a robot toy that can walk, talk and do many cool things. But what if one of the robot's legs stops working? Well, the robot might fall down and not be able to do much anymore. That's where fault tolerance comes in - some robots have multiple legs, so even if one stops working, the robot can still walk using the other legs.

Computers and machines work the same way. Sometimes they have backup parts, called redundancy, just in case something goes wrong. This way, if one part stops working, the machine can still keep chugging along. For example, if a website is hosted on multiple servers, if one server stops working, the website will still be accessible from the other servers.

So, fault tolerance is like having a plan B, in case things go wrong. It helps ensure that everything keeps working, even if one part stops working.