[H-GEN] Squid addon

[Craig Eldershaw]

(Note reply-to: being general at humbug.org.au vs Craig Eldershaw <ce at comlab.ox.ac.uk>)

>I have been informed that a program exists that is like a sister program for
>squid that allows the following.
>
>* file.x is requested and downloaded from serverX
>* then file.x is in the squid cache
>* file.x is requested from serverY
>* this sister type progeam sayth "and lo they are the sameth"
>* file.x is downloaded from the squid cache

I can't say I heard of such a beast, but more importantly, I can't see
how this could possibly work in general.  How could you efficiently
make comparrisons between file.x at cache and file.x at Y ?  

Simply basing it on name would be a disaster (think how many files
there are called index.html).  It could download it and compare,
but then there are no savings in bandwidth (I guess you can reduce
storage).  If Y accepted rsync-like connections, then that would be
more efficient, but that would be very rare.

C.

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