Middleware

[durangod]

Someone suggested today that i learn and use middleware.  It looks like another type of framework, is this middleware poop or would it be a good thing to learn?

I watched this video

https://www.youtube.com/watch?v=1oWPUpMheGk

So that means i am already using middleware or another word for it REST API when i use phpMyAdmin, is that correct?

Thanks