Concurrent failures are when multiple things go wrong at the same time, like a broken toy that doesn’t just stop working, it stops in a confusing way.
Imagine your favorite snack machine
You have a snack machine at school. It gives you a candy bar when you press the button. One day, you press the button and nothing happens. You think maybe the machine is broken. But then, your friend presses their button, and nothing happens either. Then another friend tries, same thing!
Now you realize: not just one part of the snack machine is broken, several things are wrong at once. Maybe the coin slot isn’t working, the candy bar isn't moving, and the light that shows it's ready isn’t on.
That’s like concurrent failures, when multiple problems happen together instead of one after another. It’s harder to fix because you have to figure out which parts are broken at the same time, just like trying to guess why your snack machine stopped working for everyone at once!
Examples
- A power outage causes both the lights and the internet to go out at the same time.
- During a storm, the electricity goes off, and your phone loses signal.
- Your computer freezes because both the keyboard and the mouse stop working together.
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See also
- What are backup systems?
- What is interoperability?
- What is functionality?
- What are communication systems?
- Do elevator manufacturers purposefully provide a door close button that doesn't?