The first time I found Shared Cache on CodePlex, I immediately thought it would be interesting to try it with Mono on Linux.
Since the version downloaded that time (December, 2008) was not executed on Mono/Linux platform, I decided to create a new software derived from Shared Cache (fork) able to run on that environment: Cache Reloaded.
However I'm now working with the staff of Shared Cache, in order to enable it to run on Linux (without forking a new project!).
The person with whom I'm working is the main author of this software: Roni Schuetz (blog | web site). He, because of our collaboration, added me to the staff of Shared Cache (project home -> people; codeplex id = gsscoder).
I don't know what future will have Cache Reloaded, probably will be the starting point for porting Shared Cache to Linux... You can read an article about it.
Have fun with caching!