Room history local cache size configuration for better offline access to old messages history

[MurzNN]

Sometimes I have no internet access, but have time to read some rooms history, that already been received on this device.

At now Riot already cache (store) in local device storage some amount of events for rooms, so I can read some rooms without internet access. But not all rooms are cached and not so much history I see for reading.

Can you please describe current caching rules in Riot-web?

• What types of data Riot-web store in local cache (room list, room unread count, room events, room media, etc)?
• How much last events now Riot store in local storage, is local cache events count global, or per-room?
• Does Riot cache media files and using which rules (max count, cache size limit, time to live)?
• Does Riot cache events in muted (or low priority) rooms using same rules as normal rooms?

And can you make configuration value, that allow to configure local messages (events) cache size, and other cache settings?

[G2G2G2G]

Currently Riot re-downloads every piece of media in different channel/rooms every single time you switch.
For example:
Upload a video to 2 rooms
click between the rooms as many times as you want, it'll continually download the video again & again using gigabytes of data just from clicking between 2 channels chatting with people.

Riot has terrible cache currently, I think that will be fixed with your suggestion and I think it is something that is very important.