Is it possible to tell when a browser is retrieving a page from a cache?
I've thought that opening a new tab and directly browsing to the URL would make a fresh pull request from the server, but after testing (in which certain page tailorings weren't changing), it seems that this does not happen.
So is it possible to tell when a browser is pulling something from a cache versus pulling it straight from the web server?
Best Answer
The way I usually tell is to hit CTRL+SHIFT+K, or otherwise open the web debugging console, and watch the "Net" requests as the page loads. If you pay attention to the status codes, you'll see something like
when the cache is used, instead of the normal
And if you want to be really sure that you're not using the cache, hit CTRL+F5 when refreshing.