Re: IE Cache Problems...
This WebDNA talk-list message is from 1999
It keeps the original formatting.
numero = 24941
interpreted = N
texte = >I know this has been talked about on the list before, but after reading several dozen archived posts I still am not sure if it is really necessary or not to add the random number (or date including seconds) to *every* link. From what I gathered the problem only >occurs when linking back to the same page...?No, it occurs when linking to *ANY* page with IE when that page has already been visited before, either in that browser session or in an earlier browser session.HTML programmers are *supposed to* be able to use no-cache meta tags to keep web browsers from caching certain pages -- but IE ignores these tags and caches everything -- so that means you have to use another technique to force IE to retrieve a page from the server instead of from it's own internal cache.And when you add a unique number to every URL, it makes every URL unique, which means IE could not ppossibly have cached it before, which means it has to retrieve each *unique* page from the server instead of from its cache. >Are you experts really adding the extra stuff to EVERY link on your site?Yes, it's no big deal, just make it one of your standard coding practices and do it.>Why use three [random]s instead of just one?Bcause one [random] might come up again soon, but it's far more unlikely that the same 3 randoms could come up again in the same successive pattern. I used to use 5 randoms myself. If you're worried about performance, you can forget it, you'll never see a speed difference even if you use 100 randoms, so use however many you want -- or use that date/time tag someone else suggested, it looks easier to me.================================ Kenneth Grome, WebDNA Consultant 808-737-6499, http://webdna.net ================================------------------------------------------------------------- Brought to you by CommuniGate Pro - The Buzz Word Compliant Messaging Server. To end your Mail problems go to
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>I know this has been talked about on the list before, but after reading several dozen archived posts I still am not sure if it is really necessary or not to add the random number (or date including seconds) to *every* link. From what I gathered the problem only >occurs when linking back to the same page...?No, it occurs when linking to *ANY* page with IE when that page has already been visited before, either in that browser session or in an earlier browser session.HTML programmers are *supposed to* be able to use no-cache meta tags to keep web browsers from caching certain pages -- but IE ignores these tags and caches everything -- so that means you have to use another technique to force IE to retrieve a page from the server instead of from it's own internal cache.And when you add a unique number to every URL, it makes every URL unique, which means IE could not ppossibly have cached it before, which means it has to retrieve each *unique* page from the server instead of from its cache. >Are you experts really adding the extra stuff to EVERY link on your site?Yes, it's no big deal, just make it one of your standard coding practices and do it.>Why use three [random]s instead of just one?Bcause one [random] might come up again soon, but it's far more unlikely that the same 3 randoms could come up again in the same successive pattern. I used to use 5 randoms myself. If you're worried about performance, you can forget it, you'll never see a speed difference even if you use 100 randoms, so use however many you want -- or use that date/time tag someone else suggested, it looks easier to me.================================ Kenneth Grome, WebDNA Consultant 808-737-6499, http://webdna.net ================================------------------------------------------------------------- Brought to you by CommuniGate Pro - The Buzz Word Compliant Messaging Server. To end your Mail problems go to .This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to
Kenneth Grome
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