Questions tagged as 'idempotent'

I have a question on the subject here , and a < a href="http://blog.jonathanoliver.com/idempotency-patterns/"> article on the subject even at Wikipedia, but I have not yet understood the subject, so the questions are, What is Idempotency...

I'm trying to create an application sample that can call a function / method and after a certain time it checks whether the process has already been executed, if not, call the same function / method again and check the previous progress if it is...