On Fri, 20 Feb 2004, OTR Comm wrote:

> That is, if a query to a client cache server has a MISS, then the client
> will query the master server for data.

This is the definition of a parent proxy.

> Along similar lines, is it possible to have a master cache server update
> client servers on a scheduled basis (say nightly)?

Technically possible, but not implemented and no developers working or
even thinking on have such scheme implemented.