Do you mind to let us know the original problem and/or the solution of the problem so far?
I’m sure that your post will help other developer that might have similar problem as yours.

Yudi,

If you add a unique parameter to the URL for the image when you change an existing image with the same name as in a profile image where you use the UserID as the image name then any cache between your SL App and the Server will be bypassed. The server should just ignore the parameter as in my case the images are stored in Azure and it works fine. I use a helper function when needed to do the work.

HTH

Thank you for sharing your experience with us.
Surely this useful solution will helps other developers that has similar scenario.