> was this mail uncalled for?
> or why this lack of interest?
definitely not uncalled for. I liked it, and I love the fact that you share
your knowledge.
<DONT-TAKE-THIS-PERSONALLY-EVERYONE>
everytime clusters come up and people want to give feedback, we always get
the same message
"we will start implementing clusters in a week"
what I believe we are missing is
a) a technical lead
b) documentation based on mail list elaborations
c) a plan for implementation
if these components are already in place, are they public?
so it would be nice if we could see some more formal organization around the
whole clustering thing :), looks like a lot of developers are very
interested in this and would like to share their opinion.
</DONT-TAKE-THIS-PERSONALLY-EVERYONE>
just my $0.02
Filip
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Stefan Siprell
> Sent: Friday, March 02, 2001 9:24 AM
> To: 'JBoss-Dev'
> Subject: AW: [jBoss-Dev] Pseudo clustering
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]Im Auftrag von Stefan Siprell
> Gesendet: Mittwoch, 28. Februar 2001 19:07
> An: 'JBoss-Dev'
> Betreff: AW: [jBoss-Dev] Pseudo clustering
>
>
> Hi Guys,
> To tell you the truth I'm a gumshoe at all this stuff. Since
> somehow my last
> idea vanished in thin air (a generic container). It would be real
> cool and a
> real USP to have a controllable and elegant Clustering Option.
> WebLogic 6.0 uses in memory replication and kinds of other funky stuff to
> accomplish it. It runs nice in 95% the time, the rest of the time
> its a pain
> in the neck.
> So how about this one guys (and gals):
> All the clients do not talk directly to the EJBs directly via RMI
> but, they
> use space-Elements to talk to the Cluster as an unit. Each Server in the
> cluster picks the Request-Elements, processes them and returns
> the result to
> the client. As the Server can pnly pick new elements, one at a time, the
> load is distributed across the cluster, according to the reaction time(the
> processing power of the server) and not the number of available servers(as
> in the round robbin solution).
> All the SessionBeans would have to be Statefull though, and
> persisted after
> each access, to make a User-session available on all machines in the
> cluster.
> So how do we manage to talk to the Cluster via Elements instead of RMI?
> Either we can have "dummy ejbs" which are registered via a public name in
> the JNDI-tree, which repackage the RMI-Request to a Space-Element
> (a rather
> simple action) and then dispatches the request. This solution would be
> backwards compatible.
> Or the clients would talk to the "real space beans" cluster
> directly. Which
> wouldn't be actually J2EE compliant, but a lot cooler.(Eventhough Space is
> built on JINI and it on RMI, not?)
>
> What is space?
> Look at the Specs on the java.sun.com page, but in a nutshell:
> It is built on JINI allowing clients dynamically connect to
> enviroments, get
> all the available services and access them, in a very simple manner.
> Eventhough JINI supports Transactions, Security and with space is
> real easy
> to use, it is not considered as a fully grown J2EE Technology.
>
> I hope I wasn't talking alot of BS.
>
> Thanx for not killing me
>
>
> Stefan Siprell
> Software-Development
>
> <<<<<<<<<<<<<<<<<<<<<<<<<<<
> <sitewaerts> GmbH
> Hebelstr. 15
> 76133 Karlsruhe
> Germany
>
> Tel.: +49 (721) 920 918 22
> Fax: +49 (721) 920 918 29
>
> mailto:[EMAIL PROTECTED]
> http://www.sitewaerts.de
> >>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>
> -----Ursprungliche Nachricht-----
> Von: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]Im Auftrag von Darius
> Davidavicius
> Gesendet: Mittwoch, 28. Februar 2001 17:59
> An: JBoss-Dev
> Betreff: [jBoss-Dev] Pseudo clustering
>
>
> I was playing with jBoss a while and did such thing:
>
> Connections balancer - Using Balancer client (my swing GUI) gets URL of
> Application server and connects to it.
> Balancer has the list of available Servers and returns URL using
> round-robin.
> My swing GUI using RMI connects Balancer and gets URL during connect to
> server.
>
> Its like fake of real balancing.
> Hope working you JBoss team helps me understant how correct should be
> designed clustering.
>
> D&D
>
>
>
>
>
> Darius Davidavicius
> Living-Source
> http://www.living-source.com/team_employee.php3?e_id=9&e_nextid=2
> ICQ: 18325334
>
>
>
>
