[jboss-dev-forums] [Design of JBossCache] - Re: new eviction region issues

[bstansberry@jboss.com]

For the EJB3 SFSB cache I do something similar to what Sancheski describes.  I realize now it works OK because that cache has useRegionBasedMarshalling=true, so even though the cache is started the region is empty when I programatically add the eviction region config.  That's kind of a fortunate fluke though; being able to programatically add the region without requiring region-based marshalling would be nice. Without region-based marshalling, there could be pre-existing nodes.

I wouldn't worry about the # of preexisting nodes exceeding maxNodes issue.  The first time the eviction thread runs, it will take care of it; it's the job of eviction processing to worry about that.

Re: every pre-existing node having the same timestamp in the eviction queue, oh well.  Don't see any way around that without storing a creation timestamp in each node, which IMO is big time overkill. The main thing is making sure the policy knows about all nodes.

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