in an old message Walter Underwood wrote :
------------------------
"You'd get much more mileage out of implementing If-modified-since
and Allow correctly. A robot can get big speedups if the web server
will just answer the questions "has this URL changed since date X?"
and "is this URL one of the following content-types?".

In an informal test, an If-modified-since check was ten times faster
than fetching the doc and getting a 200 OK. Ten times is serious
speedup."

wunder
--
Walter R. Underwood
Senior Staff Engineer
Infoseek Software
GO Network, part of The Walt Disney Company
[EMAIL PROTECTED]
http://software.infoseek.com/cce/ (my product)
http://www.best.com/~wunder/
1-408-543-6946
----------------------



I'd like to know which web servers don't implement If-modified-since
and Allow correctly, and can we expect this problem will be solved one day
so that each robots can use these features efficiently ?




                Michel PLU

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