[10471] in www-talk@info.cern.ch
FW: Mirror Negotiation
daemon@ATHENA.MIT.EDU (Brian Morin)
Fri Dec 13 00:57:31 1996
From: Brian Morin <bmorin@WPI.EDU>
To: "'www-talk@w3.org'" <www-talk@w3.org>
Date: Fri, 13 Dec 1996 00:43:54 -0500
Resent-From: www-talk@w3.org
Peter Wrote:
"Isn't mirroring just a special case of caching?"
No, two major differences I can think of (between mirroring and proxy =
caching.)
1) Mirrors do not have to worry about keeping data current. =20
Assuming that updates are sent from the primary site, there no need to =
querry the primary site to determine if data has expired. Given that =
most web transactions involve small files, the cost of opening a TCP =
connection and finding out if data is still current is not trivial.
2) It gives content providers another tool for improving performance to =
their site(s).
I think that installing more T lines can only do so much.
Brian Morin
