Image Resizing behavior on non-static image


I am wondering about the behavior of Image Resizing feature and need some advice from expert here.

I have thousands of subdomain, each subdomain has multiple different product image URL. If I enable Image Resizing feature, technically it will convert original image and cache it. Here is the scenario where one of subdomain change product image after this (Customer update new product image to make it more attractive), does this auto reflect at customer side when they GET image again from their app (Android & iOS app)?