Why is the client sending "HTTP/1.0"? MSIE 6.0 and modern browsers should be sending "HTTP/1.1". Why does the response contain the Header "Pragma: no-cache"? That implies something is telling the client that the graphic should not depend on the cache. The JSP is probably setting the no-cache for the page (as an HTTP Header or an HTML Head META HTTP-EQUIV command) and the child requests inherit the setting. !!! Test with a static no-querystring URL: http://qcxp2/mytestpage.html FILE testpage.html: <HTML><BODY><IMG SRC="/Eip/Static/Images/Logos/siteLogo.gif"></BODY></HTML> I rewrote the cache functions for Lenya to bypass caching when a querystring exists because a querystring may completely change the response: /homepage /homepage?ShowTheLoginScreen Some software noticing the presence of the querystring may set "no-cache". solprovider On 10/24/07, uri_shaked@xxxxxxxxxxxxxxxxx <uri_shaked@xxxxxxxxxxxxxxxxx> wrote: > That was the first place I turned to as well, but the browser is actually set to the default setting - "Automatically". > another reason i think this is not a browser issue is the fact that I've also tested this on firefox and on ie7 - both set to default cache settings and the latter being on a fresh xp installation VM machine. > In all cased I'm seeing these recurring conditional requests. > I guess I wanted to verify that the response code apache is returning looks as is should - the kind that should actually achieve the purpose i talked about. > > Uri. > > solprovider@xxxxxxxxxx 24/10/2007 14:06 > > Check your browser settings: > > Internet Explorer 6.0 - Tools - Internet Options - General - Temporary > Internet Files - Settings - Check for newer versions of stored pages: > __ Every visit to the page > __ Every time you start Internet Explorer > __ Automatically > __ Never > > Mozilla 1.7.3 - Edit - Preferences - Advanced - Cache - Compare the > page in the cache to the page on the network: > __ Every time I view the page > __ When the page is out of date > __ Once per session > __ Never > > The server-specified expiration period should only affect MSIE's > "Automatically" and Mozilla's "When the page is out of date" options. > As a web developer, you are very likely to have set your browser to > the top most-frequently-updated setting to force the appearance of > changes from your current work (and may still sometimes need to > manually clear the cache.) The "every time" settings will send the > conditional request for every request while ignoring expiration > datetimes. > > You can see the Expires header so you know the server is configured as > you desire. Your browser must be configured to use the setting to > prove your browser works as desired. > > solprovider > > On 10/24/07, uri_shaked@xxxxxxxxxxxxxxxxx <uri_shaked@xxxxxxxxxxxxxxxxx> wrote: > > I've been trying to improve my webapp's performance by telling Apache > > [2.2.4] to force clients to cache static content using mod_expires. > > I'm basically trying to avoid having the client browser resend the > > 'if-modified' conditional request for the static content upon a refresh or a > > revisit to the site, thus saving the round-trip time and having the page > > presented straight from cache . For this, I've added the following lines to > > my httpd.conf: > > > > LoadModule expires_module modules/mod_expires.so > > ExpiresActive on > > ExpiresDefault "access plus 2 hours" > > ExpiresByType image/gif "access plus 7 days" > > ExpiresByType image/jpeg "access plus 7 days" > > ExpiresByType text/css "access plus 7 days" > > ExpiresByType application/x-javascript "access plus 12 hours" > > > > The problem is that for some reason this doesn't seem to work, and the > > browser [ie6] still sends the conditional requests, disregarding the > > expiration directive. > > here is an example HTTP traffic caputre (using Fiddler): > > > > First Request > > > > GET /Eip/Static/Images/Logos/siteLogo.gif HTTP/1.0 > > Accept: */* > > Referer: http://qcxp2/Eip/bin/ibp.jsp?ibpPage=HomePage&; > > Accept-Language: he > > Proxy-Connection: Keep-Alive > > User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; > > InfoPath.1; FDM; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30) > > Host: qcxp2 > > Cookie: JSESSIONID=4662B8AA7EC6B9AE09258672CBDCE54C > > > > First Response > > > > HTTP/1.1 200 OK > > Date: Wed, 24 Oct 2007 08:37:29 GMT > > Server: Apache/2.2.4 (Win32) mod_jk/1.2.25 > > Last-Modified: Mon, 17 Sep 2007 09:00:24 GMT > > ETag: "8e5a-782-8f6da00" > > Accept-Ranges: bytes > > Content-Length: 1922 > > Cache-Control: max-age=604800 > > Expires: Wed, 31 Oct 2007 08:37:29 GMT > > Connection: close > > Content-Type: image/gif > > > > GIF89a] > > > > Second Request (the one that souldn't actually occur at all) > > > > GET /Eip/Static/Images/Logos/siteLogo.gif HTTP/1.0 > > Accept: */* > > Referer: http://qcxp2/Eip/bin/ibp.jsp?ibpPage=HomePage&; > > Accept-Language: he > > Proxy-Connection: Keep-Alive > > If-Modified-Since: Mon, 17 Sep 2007 09:00:24 GMT > > If-None-Match: "8e5a-782-8f6da00" > > User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; > > InfoPath.1; FDM; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30) > > Host: qcxp2 > > Pragma: no-cache > > Cookie: JSESSIONID=4662B8AA7EC6B9AE09258672CBDCE54C > > > > Second Response > > > > HTTP/1.1 304 Not Modified > > Date: Wed, 24 Oct 2007 08:41:12 GMT > > Server: Apache/2.2.4 (Win32) mod_jk/1.2.25 > > Connection: close > > ETag: "8e5a-782-8f6da00" > > Expires: Wed, 31 Oct 2007 08:41:12 GMT > > Cache-Control: max-age=604800 > > > > Any ideas? > > Uri --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. 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