Hi,
 
I need some advices about a design issue. I'm trying to figure out how to manage my presence information notifications, using RFC 3856.
 
I have a situation in which end-to-end presence management wouldn't be suitable.
 
Still I'm wondering if server based presence management is a good idea. My thought is that it present a scalability issue.
The point is that having the presence server would have to handle every single SUBSCRIBE & PUBLISH request then sends NOTIFY to every watchers.
 
Is it an efficient way to handle presence in a network with hundreds online users, everyone having tens of contact on their list.
 
 
Thank you for your comments
 
Luba Vincent