Shared Cache Libraries

http://sharedcache.codeplex.com
“High-performance, distributed memory object caching system, generic in nature, but intended to speeding up dynamic web and / or win applications by alleviating database load.”

Also have a look at following pages:
NCache indeXus.Net

Basics on how to setup an App Fabric Cache server and API usage
http://blogs.msdn.com/b/appfabriccat/archive/2010/11/30/basics-on-how-to-setup-an-app-fabric-cache-server-and-api-usage.aspx

Memcache Basics
https://www.youtube.com/watch?v=TGl81wr8lz8

Scaling your Website with Memcached, discussion with Norths
https://www.youtube.com/watch?v=uMxZ4RI6sCQ