I use live http headers to catch the headers. I listed them below. Well
I found that php file has not been given the http headers. So is this
the problem for not caching the response produced by it ? Then how can I
handle this problem ? Also, is there some mod_cache log that I could
refer ? Thanks.
http://128.189.246.64/gethint.php?q=Eric&sid=0.11837499670287688
GET /gethint.php?q=Eric&sid=0.11837499670287688 HTTP/1.1
Host: 128.189.246.64
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2)
Gecko/20070219 Firefox/2.0.0.2
Accept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://128.189.246.64/
HTTP/1.x 200 OK
Date: Tue, 06 Mar 2007 22:35:34 GMT
Server: Apache/2.0.59 (Win32)
X-Powered-By: PHP/4.4.4
Cache-Control: public
Last-Modified: Tue, 06 Mar 2007 22:35:34 GMT
Keep-Alive: timeout=15, max=10000
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html
Erica Zhang wrote:
Well, even I use the blinding-cache. It still could not work. Thanks,
Erica
David Wortham wrote:
Erica,
I'm not sure why mod_cache should not be able to work (assuming your
module and pages are configured correctly).
IIRC, JavaScript is used on the presentation request (with the
webpage),
whereas the XMLHttpRequest response is a PHP-generated XML document.
Perhaps your extension ('.php" maybe?) or the mime/content-type
("text/xml")
is what is causing mod_cache to skip the file?
Also, from what I can gather, using mod_cache with mod_proxy (as a
caching proxy) can alter the effects of mod_cache slightly. You may
want to
read up on that.
Try using the following directive with mod_cache:
CacheIgnoreNoLastMod On
see:
http://webauth.stanford.edu/manual/mod/mod_cache.html#CacheIgnoreNoLastMod
This apparently forces blind-caching which Joe suggests is bad (I
don't know
anything about it). Short of that, you just need to read the mod_cache
manual and make sure your XML response contains the necessary headers
to get
mod_cache to work correctly.
Regards,
Dave
On 3/6/07, Erica Zhang <[EMAIL PROTECTED]> wrote:
No, still not work. Infact, mod_cache could work, because it could
cache
the javascript. But it could not work for dynamic HTTP responses
responding to XMLHttpRequests in Ajax technology. So I suspect
mod_cache
could not support this function. And I need provide such function by
myself. I prefer to do it in Apache, a comparatively general way
instead
of application itself.
Erica
Joachim Zobel wrote:
>Am Montag, den 05.03.2007, 22:53 -0800 schrieb Erica Zhang:
>
>
>>header("Cache-Control: public"); // HTTP/1.1
>>header("Expires: " .gmdate ("D, d M Y H:i:s", time() + 60 * 10). "
GMT");
>>header( "Last-Modified: " .gmdate( 'D, d M Y H:i:s' ). " GMT" );
>>echo $response;
>>
>>
>
>I am not shure about mod_caches behaviour, but omitting
last-modified is
>worth a try.
>
>Sincerely,
>Joachim
>
>
>
