[Standards-JIG] RFC 3921 Better User Presence Experience(Implementation Detail)
m at tthias.eu
Fri Oct 27 14:11:31 UTC 2006
> If local server talks to say 100 remote servers over s2s, each hosting
> say 10k users - the requirements for the local server shoot up
You do not have to store all remote users, but just the users, your
users are subscribed to, and that are online.
Most subscriptions are symetric (subscription state "both"). In that
case you have to store the users already anyway as the server has to
send unavailable presence to all these users, if local user goes
offline. For the symetric subscriptions, it's just an additional bit as
a flag in this list per entry.
Matthias Wimmer Fon +49-700 77 00 77 70
Züricher Str. 243 Fax +49-89 95 89 91 56
81476 München http://ma.tthias.eu/
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