Hi

I have a general question:

How do we implement failover in a java application?

For example, cases like:
- spool manager needs to perform jobs (ie dispatch requests)
- job scheduler needs to performs tasks
- servers need to send messages

When the program shutsdown or the PC goes down, we need another instance in
another PC to take over. I know in Resin they have a "smart" component
(mod_caucho) that knows about the servers. But in application servers like
JBoss, there's no such component, every instance works the same (I think).

Can someone point me in the right direction to look for documentation on:
- failover theory
- different techniques that can be used

or any other thoughts in this area.

I will contribute my findings to the group, so maybe James could incorporate
somekind of failover mechanism.

Keith


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