title: What is exact event(global.asax) to clear cache in asp.net
body: <p>Im working on asp.net website.
  In some pages I'm saving the datatable into chache as 
  cache["dt"]=dt;
   and using whereever I want in that page by fetching from chache.
  I'm thinking that whenever session close I want to clear session in session_end event of global.asax file.
  as cache["dt"]=null;
  What is the better location to close either application_end or session end.
  If I close in session_end will it affect to another user?
  Please provide me clear helpful info regarding this.
  Thanks </p>