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Re: Backtracking and Safari
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Re: Backtracking and Safari


  • Subject: Re: Backtracking and Safari
  • From: Joe Moreno <email@hidden>
  • Date: Fri, 06 Jun 2008 00:24:54 -0700

Chuck,

When I start wondering if Safari is caching a page or if it's my own bug I add something useless to the end of the URL (i.e. either server side or client side via JavaScript). Usually, I'll just tag on a key/ value pair such as ?t=1212726377311 which is simply the time. To Safari, and any proxy servers, this appears as a new request.

- Joe


On Jun 3, 2008, at 17:24:12, Chuck Hill wrote:

Hi,

Safari, at least as of version 3.1.1 (5525.20) does not seem to respect the headers that control local page caching. The Safari FAQ claims to show how to do this:
http://developer.apple.com/internet/safari/faq.html#anchor5


Returning
last-modified = ("Wed, 04-Jun-2008 00:10:53 GMT");
cache-control = ("no-store, no-cache, must-revalidate, max-age=0, post-check=0, pre-check=0");
expires = ("Mon, 26 Jul 1997 05:00:00 GMT");
date = ("Wed, 04-Jun-2008 00:10:53 GMT");
pragma = ("no-cache");


still results in Safari using the local cache instead of making a trip back to the server. The Web Inspector in Safari show that it is getting these headers, but it seems to ignore them. I have reported this to Apple.

Obviously, this has rather serious implications for those of use deploying dynamic web applications. The back button is hard enough to deal with when the browser works correctly!

Any suggestions for work arounds gratefully attempted.

Chuck

--

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/products/practical_webobjects






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