Very Computer

1. Caching proxy server with off-peak cache refresh

This is my first Usenet request, so here goes...

I am involved in a project where a school will be connected to an ISP via ISDN.
 Although the costs will be subsidised, the local telco will still be charging
for each call that is made.  It works out at about 7 cents/minute peak (8am to
6pm) and about 2 cents/minute off-peak/weekends. The charging is done in units
(3 minutes/unit peak, 15 mins off-peak), so configuring ISDN to stay up until
just shy of the unit limit when there is no activity would make sense, but
that's a side-issue.
Therefore the need for a proxy caching server.

Linux seems to be the way to go, since a modest machine (486+) which, for
the users, runs Win95+browser slowly will do the job (?).

Are there server packages available which will allow the cached (mainly Web)
content to be refreshed automatically off-peak, especially stuff which has been
accessed in the previous couple of days.

Maybe this would help to keep costs down.
Anyone out there gone through this experience before?

(Yes I do work for the local telco, but that's a different story..  (;)
KF

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