I’m the creator of Military Knowledge Online mkonline.pro
I built the web application to work in environments where it will not be sending any data back to the server. All data is stored in the users cache. The problem is the VPN seams to randomly run a refresh on it and will sometimes wipe the cache at the same time. I noticed other sites don’t have this issue. Is there anything I can add in to fix this problem. As all of the user data is stored in cache this has created a problem. I have started implementing a way for users to download profile data and application data to a file and reload it. However, the random reloads and cache wipes are annoying.

you can view source here: https://github.com/Patrick-W-McMahon/military-knowledge-online