Our investigations have shown us that not all browsers respect the HTTP cache directives in a uniform manner. For security reasons we do not want certain pages in our application to be cached, eve.
Ok, even if you aren't using express, what essentially needed is to set the nocache headers. I'm adding the headers in a reusable middleware, otherwise you can set those headers in any way that works.
Spent days trying to get Chromium based app to stop caching images. The ?nocache with time echo solved the issue. Thank you!