[Users] Scalability in presence notification

[Bogdan-Andrei Iancu]

Hi Vincent,

skipping the fact that the pa module from OpenSER is still not mature 
and the presence encoding is not compatible between all SIP UA, in order 
to distribute the presence related traffic you may use several presence 
openser server; Based on static rules, the proxy may distribute the 
traffic  among the presence servers - static load-balancing. Like  the  
present of users  from  A to  E will be kept on server1, for users  from 
F to J will be kept on server2  and so on.....

just an idea....

regards,
bogdan

Vincent Luba wrote:

> 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
>  
>
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