On 11/19/05, Laurie Harper <[EMAIL PROTECTED]> wrote:
> > This clearly implies that the brower caches the page and displays that when
> > you click back...
>
> All that implies is that the dynamic content hasn't changed. Unless the
> page has data on it that you know should be different on every page load.

Browser is not obliged to reload non-cached page when a user navigates
back in browser page history. Quite the opposite, they must present
the resourse in the same state it was accessed for the first time.
Opera does not reload a page, even with cache-control settings telling
to not cache a page. MSIE reloads page when it sees "no-cache".
Firefox reloads a page when it sees "no-store" or the page is secured
by SSL and returned as "no-cache".

Usually "no-cache, no-store" is enough for most browsers, but not for Opera.

Michael.

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