Hi.
First thanks for the critique. Such types of solutions are many, but I don't want such solution. In my case i have over a million images of which i don't know the name or their existence. I want to try for existence of requested file and if he is found then return to me. If the requested file is not exist go to my proxy_pass $mybackend; and he will generate and upload it. WIth this idea i want to skip database layer. I have some ideas how i can do that but firstly i want to hear your feedback about that.

10x once again for your advice :)