Seperate Mobile v Desktop Cache in Redis

[mdotk]

Hello,

Currently I use v3 Fastcgi cache. This is because according to this thread Fastcgi_cache, Mobile theme, Purge I can separate mobile and desktop caches.

I have tried Redis before and I have not found a way to create different caches. This is very important because some elements I only show to mobile users, some to desktop users. It is not possible as per these threads too:

Separate Redis Cache for Mobile/Desktop?

Hello EasyEngine community. My site serves different content for mobile vs desktop. Is it possible to specify a different redis cache for mobile? Perhaps by detecting the UA and setting an alternate redis key?

Full page redis cache mobile pages separately

Something that the w3tc plugin allows is a way to cache pages separately based on user agent groups. I know this is bad practice anyway, but I have a photo gallery plugin I love that uses php to detect desktop vs mobile. It doesn’t work correctly because the pages are cached based on whatever device hit them first. Would there be any way to cache a separate version of a page based on a list of user agent strings?

So what can I do about this when trying to migrate to EE v4?

Thanks!