Why use System.Runtime.Caching or System.Web.Caching Vs static variables?

Question

Long time listener - first time caller. I am hoping to get some advice. I have been reading about caching in .net - both with System.Web.Caching and System.Runtime.Caching

Answer 1

Other than expiration (and I wouldn't want this to expire) ...

If you don't care about the life-time the name is not caching anymore.

Still using Application (your case) and Session object are best practices for storing application level and session level data.