----- Original Message ----- From: "howard chen" <howachen@xxxxxxxxx>
To: <users@xxxxxxxxxxxxxxxx> Sent: Thursday, October 02, 2008 6:28 PM Subject: Force IE to cache
Hello, In the httpd.conf, I have already set all the images files to expire +10 years from now, using mod_expire. Example response: ============= Status=OK - 200 Date=Thu, 02 Oct 2008 16:23:15 GMT Server=Apache Last-Modified=Thu, 27 Mar 2008 08:02:14 GMT Accept-Ranges=bytes Content-Length=3945 Cache-Control=max-age=315360000 Expires=Sun, 30 Sep 2018 16:23:15 GMT Keep-Alive=timeout=5, max=100 Connection=Keep-Alive Content-Type=image/gif I use Firefox to verify the expiry date, using about:cache, also tell me the correct value. Something quite strange, in the access log, there are quite a many of 304 Not Modified response. Since I have manually set an expire to 10 years, so the client should NOT request again and again (yes, they might hit F5, but I don't think there are so many people do the F5 every day .... 50% of all request). After checking the log, I found most the 304 response is for client IE6/IE7. Any things I have missed? Thanks.
I asked McCain and Obama... they didnt understand this either... but Bush said make an X on your PC, and he'll make your problem disappear ;)
Look I dont know... but 304 responses are part of ETAG and Last Modified... so try this
<IfModule mod_headers.c> Header unset Last-Modified </IfModule> I think you just want the Cache Control and the Expires...Etags are probably not a bad thing... if the server file changes, it changes otherwise its fairly efficient... up to you
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