no-cache explanations (was: Re(4): FLASH: IE-cache, text file)

[Colin Moock]

from webreference.com (can't find the exact link anymore...). perhaps useful

to hear official recognition of the ie problem being discussed...(sorry for

the formatting).


                Expires

                This tells the browser the date and time when the document

                will be considered "expired." If a user is using Netscape

                Navigator, a request for a document whose time has

                "expired" will initiate a new network request for the

                document. An illegal Expires date such as "0" is

                interpreted by the browser as "immediately." Dates must

                be in the RFC850 format, (GMT format): 

                <META HTTP-EQUIV="expires" CONTENT="Wed, 26

                Feb 1997 08:21:57 GMT"> 


                Pragma

                This is another way to control browser caching. To use this

                tag, the value must be "no-cache". When this is included in

                a document, it prevents Netscape Navigator from caching a

                page locally.

                <META HTTP-EQUIV="Pragma"

                CONTENT="no-cache"> 


                These two tags can be used as together as shown to keep

                your content current-but beware. Many users have

                reported that Microsoft�s Internet Explorer refuses the

                META tag instructions, and caches the files anyway. So

                far, nobody has been able to supply a fix to this "bug." As

                of the release of MSIE 4.01, this problem still existed.



colin


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