Re: caching ideas
Luigi Rizzo (luigi@labinfo.iet.unipi.it)
Sat, 3 Aug 1996 06:57:48 +0200 (MET DST)
> Is there a proposal to add globally unique id's to HTTP?
> There is a noticeable lack of unique object identifiers.
>
> Large objects are often duplicated on the Web....and UID's
> assigned to largish objects would reduce traffic.
While the idea is sound, some time ago I did some measure on our
proxy cache: out of ~300 MB of files in the cache, only about 7MB
were duplicates with a different name. I only considered files with
the same size (after stripping metadata), so I might have missed
something, say text files with different end-of-line conventions;
also, this test should really be repeated on a larger data set.
Anyways, I am not very convinced that the saving are worth the
effort of handling multiple headers for the same object (while I
was *before* doing this test).
Luigi
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Luigi Rizzo Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it Universita' di Pisa
tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522 http://www.iet.unipi.it/~luigi/
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