Reactor pattern

Reactor pattern is a computer programming pattern that helps us manage asynchronous input/output (I/O) requests. This is useful because sometimes when we ask our computer to do something, it takes a few seconds for it to figure out what to do and actually do it. The reactor pattern is like a system of roads that helps our computer quickly figure out which request should go where and when it should do it. It's like a traffic light that tells cars when to go and when to stop. It makes sure everything is done quickly and efficiently!