@rhencke FWIW, I’d encourage you to start playing with remote cache as soon as you can. I got local caching up and working in a manner of minutes, but once you go cross-platform or try to push task outputs from a build/CI machine and then read them locally, lots of stuff can go haywire!
It’s totally worth the investment though to keep investigating; it’s flushing out a lot of bugs in my code. You can read more about my experience here.