When does a cached website refresh?

Posted by user142485 on Super User See other posts from Super User or by user142485
Published on 2012-09-14T15:10:04Z Indexed on 2012/09/14 15:40 UTC
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If i go to example.com [placeholder for different website] it creates the numerous cache entries in the browser for different items on the page and two entries for example.com. One of which expires in 1.5hrs and the other has 'No expiration time.'

What I am wondering is: when does the browser display the cached page and when does it get the newest version from the server (when re-visiting the site)?

What do the two different expiration times for the top level domain mean?

A web page I went to was temporarily redirecting to a different page. After it was back up, I was still getting redirected to the temp page even though the correct page was up. Would this have eventually resolved itself based on expiration times or does the cache need to be cleared?

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