Hi, as far as I am aware there are no browser specific http headers relating to caching.
However, this is a lot of grey areas surrounding the expires, nocache directives etc. The book http://www.oreilly.com/catalog/webcaching/ gives an excellent insight into this. As far as your specific problem is concerned. Are you sure the headers are being written correctly? Might be worth using a program such as "HttpTracer" to monitor what your asking the browser to do. I believe RObs idea of making the URL unique should work. joel -----Original Message----- From: Hanson, Robert [mailto:[EMAIL PROTECTED]] Sent: 01 February 2002 22:55 To: 'yue lu'; [EMAIL PROTECTED] Subject: RE: cache I believe "nocache" is for Netscape only. For IE you should use "expires". (or was it the other way around) ...So you should use both. I don't have any references handy, but a value of "0" for expires might work. Alternatively you could use a scheme that a lot of ad agencies use. They append a random number to the image URL, this way the URL changes every time. Like this: /images/foobar.gif?98708977 This is assuming that the page with the image tag is a template where you could add a random number. Rob -----Original Message----- From: yue lu [mailto:[EMAIL PROTECTED]] Sent: Friday, February 01, 2002 5:49 PM To: [EMAIL PROTECTED] Subject: cache I had a cgi program, and it will dynamically draw a image and load into the cgi program, but because the web browser cache always remember the image file, so it will not update the image unless I quit the browser, restart the browser, then tue image will update. please help me with this problem? I use the no cache tag, it doesn't work! somebody please help, please give me some source code. Thank you so much, Emily _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
