I wasn't aware that JMS could
a) allow you to modify/customize the protocol stack
b) provide notification of members that joins, leaves or crashes
c) atomicity
these are the big things, I would like to hear what info you have one JMS
over multicast
Filip
------8<-----------------------------------------------------------
JavaGroups is a group communication toolkit written entirely in Java. It is
based on IP multicast, but extends it with reliability and group
membership.
Reliability includes
* lossless transmission of a message to all recipients (with retransmission
of missing messages)
* fragmentation of large messages into smaller ones and reassembly at the
receiver's side ordering of messages, e.g. messages m1 and m2 sent by P
will be received by all receivers in the same order, and not as m2, m1
(FIFO order)
* atomicity: a message will be received by all receivers, or none.
Group Membership includes
* Knowledge of who the members of a group are and
* Notification when a new member joins, an existing member leaves, or an
existing member has crashed
~
Namaste - I bow to the divine in you
~
Filip Hanik
Software Architect
[EMAIL PROTECTED]
www.filip.net
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Hiram Chirino
> Sent: Friday, March 09, 2001 11:44 AM
> To: JBoss-Dev
> Subject: Re: [jBoss-Dev] CL: Clustering, let's get started
>
>
>
> I would like to know what javagroups give you that JMS over multicast does
> not?
>
> Regards,
> Hiram
>
> >
> > Yes, I read up on JavaGroups, it is a brilliant idea. if anyone of you
> > haven't taken a look at it yet,
> > goto www.javagroups.com
> >
> > the idea of building your own stack on top of their technology is very
> > appealing to me.
> >
> > Furthermore, the idea of groups will blow away an implementation like
> > Weblogic that uses IP multicast and heart beats to determine whether a
> > server is up or down. Javagroups has that capability built in already.
> > not trying to be competitive, just comparative. :)
> >
> >
> > Tom and Sacha, great ideas and great work!
> >
> > ~
> > Namaste - I bow to the divine in you
> > ~
> > Filip Hanik
> > Software Architect
> > [EMAIL PROTECTED]
> > www.filip.net
> >
> >
> >
>
>
