Re: Project Gutenberg's Roget's Thesaurus
Tue, 13 Apr 1993 18:37:17 +0200

>As more public domain hypertext comes on line, we are going to need
>some big disks on each continent for it. We should also perhaps use
>some mirroring software to keep them up to date.

I see a problem coming here: how does an unreplicated document (say my
own home page) mane a reference to such a replicated document? If I
have a reference to the closest replica, a user far away who follows
such a link will get pointed to the replica closest to *me*, not
closest to her.

Some possible solutions:

- a translation scheme whereby clients "know" (e.g. from a local
configuration file that may be updated automatically as mirror sites
are added) that information at host X is identical to info at host Y

- a magic string in hostnames that is translated dependent on the
geographical position of the client (e.g.

- upon first contact with a server, it might respond with "please
try the following mirror site which is closer to you" (this could be
put in HTTP2 I suppose).

This is a real problem with embedding location information in URLs...

--Guido van Rossum, CWI, Amsterdam <>