An alternate take to @DBear's of your question:
Getting the page from the cache - or from the server (which would have the current state of the web page)...
What I've used in the past - in the "Head" of the HTML doc (where "0" = zero seconds):
<meta http-equiv="refresh" content="0">
The zero is an instant refresh, which is what You would want in your case.
If You used "15" it would refresh in 15 seconds.
Please also see:
You can also use this technique as a redirect to another page, example here after "0" seconds (instantly):
<meta http-equiv="refresh" content="0; url=http://google.com">
Some entities such as the W3C discourage using the meta refresh as it "can disorient users". What a specious argument. Any poorly designed web page can disorient users. As with all tools - use it properly.
Also, apparently browsers' history ("Back" button) can have issues with redirects that are shorter than 5 seconds. I've never had a problem but this might be something to pay attention to.