Google updating cached pages
In theory, that shortcut should cause Chrome to refresh the current page while ignoring cached content.However, it does not appear to work for files downloaded by a Flash app, such as xml and images. Update: Upon further investigation, I think I was mistaken initially.
" If it is not working, you can file a bug report, but it looks like quite a few other people are having the same issue.
Some more details: For Shift Command R, cache is simply ignored and resources are requested like no cache existed. This is true for most, if not all, modern browsers.
The only way to force relying on the cache (without the browser even asking for possible changes) seems to be clicking a link on the web page, or by following a bookmarked link, or by going into the URL location bar and hitting Return there (Command L, Return).
Practically every search result includes a If Google returns a link to a page that appears to have little to do with your query, or if you can’t find the information you’re seeking on the current version of the page, take a look at the cached version.
As part of efforts to provide a clean and simple redesign of the search results page, Google moved cached and similar links within the Instant Previews.