> -----Original Message----- > From: Tomasz Sterna > Sent: Wednesday, October 17, 2007 1:34 PM > To: jabberd2 development > Subject: Re: [jabberd2] Clustering > > Dnia 17-10-2007, Śr o godzinie 13:05 -0700, Mark Doliner pisze: > > Doesn't this make the router a bottleneck? > > Router has almost no logic - it only passes packets through. > I'm worried more about the fact that it is a single point of failure. > > We may introduce router mesh. Set of interconnected routers that > exchange their routing information. > A router receiving bound name advertisement records it in the routing > table. Same for routing method (domain/bare-jid/full-jid) change > requests when connected router detects conflict. > > Example: > sm1 - router1 - router2 - sm2 > > router1 table: > sm1 1111 > router2 2222 > sm2 * 2222 - advertisement record (presence from component) > > router2 table: > sm2 1234 > router1 2345 > sm1 * 2345 - advertisement record (presence from component) > > > > > Creating a clustering component [...] > > I don't like the idea of introducing yet another component in the > puzzle. The clustering functionality should be handled in the router.
Hmm, it DOES make sense to have the router do the routing... And the router mesh idea seems cleaner than having a cluster component route packets from one cluster to another using the s2s component... > > Also, when would sm bind to a bare jid? > > When the router detects bind conflict. It tells the conflicting > components to "go to the lower level". And there would be a bind conflict when two sm instances try to connect to router with the id "jabber.org," right? And it would also happen when a single user logs in from two locations using two different resources? > > how does c2s decide which sm instance to forward the login to? > > C2S needs changes in the SM tracking logic. > When it receives advertisements of bare-jids, it starts routing by > bare-jids, not domain. Same for full-jids. When a user logs in they get assigned to one of the sm instances, right? How would c2s decide which sm instance they should be assigned to? Would the router make that decision somehow? -Mark _______________________________________________ Jabberd2 mailing list Jabberd2@lists.xiaoka.com http://lists.xiaoka.com/listinfo.cgi/jabberd2-xiaoka.com
