I have done the same mistake with my own app a few years ago. Fortunately I had a spend limit set on Google App Engine and it was set quite low, it could have b

I have done the same mistake with my own app a few years ago. Fortunately I had a spend limit set on Google App Engine and it was set quite low, it could have bankrupted me :-). I believe that not many mobile developers actually think about this "retry hug" problem until it bites them. It's easy to just write few lines of automatic retries and think that the server will be fine.