[infinispan-issues] [JBoss JIRA] (ISPN-4132) Group-based eviction

[Paul Ferraro (JIRA)]

Paul Ferraro created ISPN-4132:
----------------------------------

             Summary: Group-based eviction
                 Key: ISPN-4132
                 URL: https://issues.jboss.org/browse/ISPN-4132
             Project: Infinispan
          Issue Type: Feature Request
          Components: Eviction
    Affects Versions: 6.0.2.Final
            Reporter: Paul Ferraro
            Assignee: Dan Berindei


Currently, Infinispan only supports size-based eviction.   We can configure a cache with a specific max-entries, so if the size exceeds this value infinispan will evict any surplus entries.

If the cache has grouping is enabled, however, it is perhaps more useful to use group-based eviction.  In this scenario, max-entries would be interpreted as "max-groups", and infinispan would evict entire groups of cache entries if the number of groups exceeds this value.

In WildFly, web sessions make use of grouping.  A single web session will map to a single group of multiple cache entries, where the number of entries is not necessarily the same for a given session.  In this case, evicting per cache entry does not make sense - all entries of a session should be evicted or not at all.  Also, users can specify the max number of sessions they want to remain in memory.  Until infinispan supports group-based eviction, translating this value to an appropriate max-entries is cumbersome and imprecise.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira