A Data Caching framework for Windows Phone?
There is something similar available and it's from Q42Take a look at the code here: https://github.com/Q42/Q42.WinRT
It's both for win rt and wp8
Also, there has been an effort to port AGFX to Win RT by Indrajit Chakrabarty ( twitter @indyfromoz ), but it wasn't as stable when I tested it...
Link for that here https://github.com/indyfromoz/AgFx