Recently I've been working on Hibernate Search clustering.
Hibernate Search will have the ability to work in a master / slave mode.

Every node has a local copy of the index and can read it (ie query it). When an update is required (actually when a transaction scoped list of updates are required) by a node, a message is sent to a master node responsible to update the master index. On a regular basis, each node acquires a copy of the master index in local to stay up to day asynchronously.

My first implementation involves JMS, but one could imagine using:
 - JBoss Messaging standalone in headless mode (when it's done)
 - a servlet controller receiving http requests
 - whatever you want

Thoughts?

Is this clustering at the level of Hibernate Search or is it something
at the lucence index level ?

Would it not make sense to be a "index tech" level concern or ?

--
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Max Rydahl Andersen
callto://max.rydahl.andersen

Hibernate
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JBoss a division of Red Hat
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