[ejabberd] Communicate with other modules
langxianzhe at gmail.com
Tue Jan 31 12:28:52 MSK 2012
hi, why not using riak in ejabberd. I want using. who can give some idea
to me. thanks
2012/1/30 Michael Weibel <michael.weibel+xmpp at gmail.com>
> Hi Steve,
> I managed to get it working by registering the shared resource as a
> globally registered gen_server.
> But I'll take a look on the gen_fsm which I don't know yet (as I'm still
> learning erlang).
> Am 30.01.2012 um 10:11 schrieb Stefan Strigler:
> > I'm not sure whether gen_server is the right choice here. Typically your
> scenario is what's called keeping guard of a shared resource (the link to
> the DB). You'd naively implement this by spawning a process which waits for
> messages of the other modules to fulfill queries on their behalf and
> synchronously or asynchronously send back replies to those other "modules"
> (which are running processes itself in fact). This whole thing can be
> formalized by using the gen_fsm pattern which is the general approach
> ejabberd uses for all of its architecture. By using a supervisor for this
> FSM you can make sure to keep such a process up and running in case of
> failures (which would otherwise be fatal to the overall system).
> > Greets, Steve
> > ejabberd mailing list
> > ejabberd at jabber.ru
> > http://lists.jabber.ru/mailman/listinfo/ejabberd
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