Use thumbnails instead of originals

[dronnikovigor]

Hi,
I was able to click app a bit and noticed some things that can be improved, although application is already cool.

So, i noticed, that when I open photo it opens originals - at least I heard that my disks started.
As far as I know in web when I open photo - it takes max size thumbnail from photoprism cache on ssd and disks are off till I open a video.
So, my thoughts was:

1. On photo click app opens max size thumbnail from photoprism cache OR takes from app cache original image
2. In background app loads original from server and upscale/override thumbnail. And being cached.

For now it takes about 1 sec to show photo, even for previously opened photo (maybe it's just spinner).

[Radiokot]

The app only load originals when you click "Download" or "Share".

Media viewer determines photo preview size based on your screen size and loads the corresponding image. If there is no cached preview of the requested size for the file in storage/cache/thumbnails, PhotoPrism generates it – this may be the cause of HDD activation.

All the loaded images are cached in the app, but the cache has a size limit – the least recent used entries get removed. If you see that the app always loads images from the server, check if no redirects are happening for requests – if the first response is 301, 302, 307 or 308, the cache doesn't work.