RE: Communication between JVM's

Hi Chris.

Yes there MANY options to link 2 jvms as listed
earlier:

serialized objects
jsps, servlets
sockets
URL connections using a protocol like HTTP
RMI / EJB
database ( use tables as shared message queues )
JDBC stored procedures
and, of course, the expensive option (MQ)

Is it inefficient to use sockets or RMI IF the jvms
are on the SAME iSeries???

It IS efficient because internally TCP support opens
pipes between the applications, not true TCP socket
connections ...

Jim Mason


--- "Price, Chris" <chris_price@nsb.co.uk> wrote:
> This message is in MIME format. Since your mail
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> It's kind of a messaging system.
>
> My WAS needs to sends messages to some clients, via
> a router. The router to
> client part I'm happy to be socket based.
>
> If the WAS & the router are running on different
> machines, then they will
> have to use sockets to communicate. BUT if they are
> the same machine, will
> it be inefficient to communicate via sockets?
>
> I'm also nervous about large number of sockets being
> opened in the WAS, as
> each one is going to tie-up a TCP/IP port for the
> duration of the
> conversation.
>
> Chris.
>
>  -----Original Message-----
> From:         Geert Van Landeghem
> [mailto:gvl@reynderseti.be]
> Sent: 12 April 2002 15:01
> To:   'java400-l@midrange.com'
> Subject:      RE: Communication between JVM's
>
> In my humble opinion, no. You could use File objects
> on disk, an OODBMS, ... to share information. The
> most low
> level communication is always done by using sockets.
> What kind of application do you want to write?
>
> Geert
>
> -----Original Message-----
> From: Price, Chris [mailto:chris_price@nsb.co.uk]
> Sent: vendredi 12 avril 2002 13:51
> To: 'java400-l@midrange.com'
> Subject: RE: Communication between JVM's
>
>
> This message is in MIME format. Since your mail
> reader does not understand
> this format, some or all of this message may not be
> legible.
> --
> [ Picked text/plain from multipart/alternative ]
> Are there no more efficient solutions than sockets
> (which all these
> ultimately use)?
>
>  -----Original Message-----
> From:         Geert Van Landeghem
> [mailto:gvl@reynderseti.be]
> Sent: 12 April 2002 14:45
> To:   'java400-l@midrange.com'
> Subject:      RE: Communication between JVM's
>
> There are several possibilities using:
> - sockets
> - RMI or Remote Method Invocation (serialized
> objects over sockets)
> - EJB (Application server) to clients
> - Servlet/JSP (Application Server) to clients
> ...
>
> Geert
> -----Original Message-----
> From: Price, Chris [mailto:chris_price@nsb.co.uk]
> Sent: vendredi 12 avril 2002 13:25
> To: 'java400-l@midrange.com'
> Subject: Communication between JVM's
>
>
> This message is in MIME format. Since your mail
> reader does not understand
> this format, some or all of this message may not be
> legible.
> --
> [ Picked text/plain from multipart/alternative ]
> All,
>
> What is the best way of communicating between two
> different JVM's, running
> on the same machine?
>
>
> Chris.
>
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