Caching files on client

[buuuudzik]

How can I configure caching files for app files? I've created a few apps and today I've checked if caching is working but I see that unfortunately no

[admin]

All static files are cached unless you have something misconfigured on client side or in your app. Server will return 304 code when client is requesting cached files.

[buuuudzik]

But I see that this is probably also on every device because I have same situation on mobile and normal visu. E.g. every image is loaded every time. I don't see any catching. This is not on the latest firmware but this is not very new issue. I will check this more close and also on the newest firmware.

[buuuudzik]

I've checked today on the latest firmware and situation is the same, and also with Mosaic, Visu and Apps, all files instead fonts are downloaded again on every refreshing by F5. I have the same on Firefox, Chrome and mobile. At the same time when I've downloaded other page e.g. www.onet.pl or google.com a lot of content is downloaded from disk.

[buuuudzik]

And e.g. Mosaic 3.0 only wijmo.min.css. Bootstrap and other libraries aren't cached. Apps view is cached (all icons and libraries) only widget isn't.

I've attached screenshots.