When you cache a page I assume you are saving the rendered html that gets sent to the user who requested the page. What happens when the person who requests the page is logged in and their user name is displayed at the top of the page. This I assume will change the html that is rendered and thus mean the cache is rebuilt?
If so is there any point caching pages in such a scenario as I assume there will be a performance penalty rebuilding and storing the cache all the time?
I am not sure if this makes any difference but all the pages have a master page and this is where the login is displayed.
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