url cache and refresh in browsers

When you visit a url (such as http://myprogrammingnotes.com/go)in Firefox, and the url is redirected to another url such as http://google.com, Firefox will remember the redirecting url. Thus, if you type the first url again in the address bar of firefox, firefox will not access  myprogrammingnotes.com, but go to the redirecting url http://google.com directly. The problem is if http://myprogrammingnotes.com/go is now redirected to another url such as http://yahoo.com, you will still navigate to http://google.com. To go to the updated redirecting url, you should close firefox and open it again, and this time, firefox will visit myprogrammingnotes.com to get the refreshed redirecting url:http://yahoo.com.


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