Re: Caching pages...again
This WebDNA talk-list message is from 2001
It keeps the original formatting.
numero = 36927
interpreted = N
texte = I'm really not sure what this discussion thread's main issue,I use the following meta tag to force the browser to load thepage from my server and not from the cache.
-- Anup Setty ------- Original Message ----- From: John Peacock
To: WebCatalog Talk Sent: Tuesday, July 03, 2001 9:47 AM Subject: Re: Caching pages...again > Glenn Busbin wrote: > > > > > > > > > > >This has nothing to do with caching. > > > > Google says it sure has to do with caching on proxy servers. > > > > ROBOTS != caching servers > > Most HTTP caching servers operate in transparent mode; by this I mean > that the client requests a page through the server and the server sees > whether it has that page cached. If you are unlucky (or gullible) > enough to use AOL, all of your accesses are through a caching server. > > Robots or spiders, on the other hand, do not (as a rule) keep a cache > of the pages they visit (think of the storage requirements). They > only apply whatever indexing algorythm they use to the page and store > the indexed information for later searching. > > Google, unlike most search engines, does keep a copy of the original > page available for viewing _when the original page is no longer > available_. Here is a representative search from Google: > > University Press of America, Inc.: Catalog/Advanced Search > Click here for details on Web Discount. University Press of America, > Inc. Catalog > / Advanced Search. Click Here for Search Instructions ... > www.univpress.com/Catalog/ - 18k - Cached - Similar pages > ------ > > If you click on the first line, you get the actual site; if you > click on the hyperlink (unlined) labled Cached you get a copy of > the page as it was when the spider walked the site. > > This is not a feature pf caching proxy servers at all; this is a > feature of Google specifically. QED > > > > > > > > > >Use MIME headers correctly if you don't want any caching done. > > > > > > > Will all servers obey MIME headers for cache rules? > > > > The combination of the two headers I described in the other thread is > the only way _I_ know of to consistently defeat (or correctly apply) > caching proxy services. If you do not use both, you are letting > yourself in for whatever heuristic the caching server uses to determine > whether the page should be fresh or cached. > > John > > -- > John Peacock > Director of Information Research and Technology > Rowman & Littlefield Publishing Group > 4720 Boston Way > Lanham, MD 20706 > 301-459-3366 x.5010 > fax 301-429-5747 > > ------------------------------------------------------------- > 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 > Web Archive of this list is at: http://search.smithmicro.com/ ------------------------------------------------------------- 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 Web Archive of this list is at: http://search.smithmicro.com/
Associated Messages, from the most recent to the oldest:
I'm really not sure what this discussion thread's main issue,I use the following meta tag to force the browser to load thepage from my server and not from the cache.-- Anup Setty ------- Original Message ----- From: John Peacock To: WebCatalog Talk Sent: Tuesday, July 03, 2001 9:47 AM Subject: Re: Caching pages...again > Glenn Busbin wrote: > > > > > > > > > > >This has nothing to do with caching. > > > > Google says it sure has to do with caching on proxy servers. > > > > ROBOTS != caching servers > > Most HTTP caching servers operate in transparent mode; by this I mean > that the client requests a page through the server and the server sees > whether it has that page cached. If you are unlucky (or gullible) > enough to use AOL, all of your accesses are through a caching server. > > Robots or spiders, on the other hand, do not (as a rule) keep a cache > of the pages they visit (think of the storage requirements). They > only apply whatever indexing algorythm they use to the page and store > the indexed information for later searching. > > Google, unlike most search engines, does keep a copy of the original > page available for viewing _when the original page is no longer > available_. Here is a representative search from Google: > > University Press of America, Inc.: Catalog/Advanced Search > Click here for details on Web Discount. University Press of America, > Inc. Catalog > / Advanced Search. Click Here for Search Instructions ... > www.univpress.com/Catalog/ - 18k - Cached - Similar pages > ------ > > If you click on the first line, you get the actual site; if you > click on the hyperlink (unlined) labled Cached you get a copy of > the page as it was when the spider walked the site. > > This is not a feature pf caching proxy servers at all; this is a > feature of Google specifically. QED > > > > > > > > > >Use MIME headers correctly if you don't want any caching done. > > > > > > > Will all servers obey MIME headers for cache rules? > > > > The combination of the two headers I described in the other thread is > the only way _I_ know of to consistently defeat (or correctly apply) > caching proxy services. If you do not use both, you are letting > yourself in for whatever heuristic the caching server uses to determine > whether the page should be fresh or cached. > > John > > -- > John Peacock > Director of Information Research and Technology > Rowman & Littlefield Publishing Group > 4720 Boston Way > Lanham, MD 20706 > 301-459-3366 x.5010 > fax 301-429-5747 > > ------------------------------------------------------------- > 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 > Web Archive of this list is at: http://search.smithmicro.com/ ------------------------------------------------------------- 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 Web Archive of this list is at: http://search.smithmicro.com/
Anup Setty
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