Re: inter-instance communication ?
Re: inter-instance communication ?
- Subject: Re: inter-instance communication ?
- From: Andrew Lindesay <email@hidden>
- Date: Mon, 22 Sep 2008 10:54:45 +1200
Hello Gavin;
(Shifted back to WebObjects-Dev as I presume you mean to target this
list)
I use a messaging server (using J2EE's JMS interfaces) that has a
topic configured for this purpose. You can use the free ActiveMQ to
develop with, but I would tend to go for something commercial for any
serious deployments. What I tend to do is to fire JSON-RPC messages
into the queue and have them invoke on all the instances in the
deployment. This works well for me.
cheers.
I have a need to communicate small amounts of data between
application instances (some on the same machine, some on others),
enough for them to make a shared decision about which one is going
to be 'master'. I looked at the Wonder default and jGroups
implementations of remote notifications, but I believe that they
have the goal of sync'ing models, which I don't need to do.
The shared info is dynamic (for example, if the master instance gets
in trouble, I want another to become the new master). I can think
of a few ways to do this: I could set up my own multicast chit-chat,
I could put the data in question in a database, I could use a
networked file, ...), but I thought I'd ask whether Wonder, with its
extensive coverage had some capability that would facilitate this ..
Gavin
___
Andrew Lindesay
www.lindesay.co.nz
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