Joe Touch wrote:
> > > The difference between a mirror and a replica, IMO, is that
> > >
> > > a mirror is a copy of an entire server
> > > a replicate is a copy of one of the files on a server
> >
> > but then we run into problem of defining what is an 'entire server' ?
>
> "entire database" - a related collection of data.
>
> I.e., mirror refers to the server,or collection, not the
> individual items. A datum is replicated; the collection is
> mirrored. (at least that's what I'm trying to convey).
I think the distinction here is "on-demand" vs. "a-priori" not whether
the whole database (or channel, as we would say in I2-DSI) is copied.
One can have a dynamic cache which fetches the whole channel when any object
is referenced. Similarly a-priori strategies for copying can be based on
factors other than "the whole database". The difference is whether it is
a the copying is a response to a request or made prior to the request. IMHO.
/micah
This archive was generated by hypermail 2b29 : Thu Nov 18 2004 - 11:21:26 MST