Windows service using WCF or .Net Remoting service

Windows service using WCF or .Net Remoting service

I want to create a Windows Service (CS) which shall keep some data objects
in memory for 12 hours or more. This windows service (CS) shall call a WCF
service (DS) or Database to populate the reference data.
From the Web Site (WS), I need to access those data objects from the
windows service (CS) so that I dont need to call WCF service or Database.
Earlier I achieved something similar to this by using .NET Remoting
(MarshalByRefObject).
I am trying to something similar to distributed caching. Reference data
calls from web site to WCF service or database take longer time. So I
planned to have Windows (WCF) service which loads all the reference data
during off-peak hours and keep it in its memory. My web site will directly
access the data objects from memory.
How can I do that same in WCF ? I mean achieving .Net Remoting in WCF...
Thanks JK