ASP.NET Caching
http://www.ondotnet.com/pub/a/dotnet/2002/12/30/cachingaspnet.html
.NET Data Caching
http://aspnet.4guysfromrolla.com/articles/100902-1.aspx
ASP.NET Caching: Techniques and Best Practices
http://msdn2.microsoft.com/en-us/library/aa478965.aspx
Working with Query Notifications
http://msdn2.microsoft.com/en-us/library/ms130764.aspx