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https://issues.apache.org/jira/browse/DIRSERVER-959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Karasulu updated DIRSERVER-959:
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Priority: Major (was: Critical)
Affects Version/s: (was: 1.5.0)
> We nedd a global cache
> -----------------------
>
> Key: DIRSERVER-959
> URL: https://issues.apache.org/jira/browse/DIRSERVER-959
> Project: Directory ApacheDS
> Issue Type: Improvement
> Reporter: Emmanuel Lecharny
> Fix For: 2.0.0
>
>
> Currently, we only have local caches assigned to each partition :
> - a so called "global" cache which stores the partition entries
> - a cache for each declared index
> We also have real global caches :
> - a cache for referrals
> - a cache for ACIs (tuples)
> - a cache for subentries
> - a cache for principals
> - a cache for Groups
> - a cache for notAlias entries
> Up to this point, it becomes to be a full mess. We have so many different
> caches, with so many different configurations, that it's almost impossible to
> know how to correctly tune the server. Moreover, we may have empty caches
> when other are heavily hit.
> After having discussed about this situation with Alex, we think wit would be
> better to have a global cache shared between all the partitions, but with
> added functionnalities :
> - the possibility to balance the cache between partitions (for instance, 20%
> for 'ou=system', 80% for 'dc=example, dc=com'
> - the possibility to change this balance dynamically, depending on the actual
> hit rate
> - the possibility to dedicate a part of this cach to pin some entries in
> memory (like the schema partition entries, for instance)
> - the possibility to increase or decrease the cache size dynamically, without
> having to stop and restart the server
> It would be also a good idea to be able to have a global Interface for all
> the cache we have, and may be a cache manager instead of a specific
> implementation for each cache
> Feel free to add comments in this JIRA !
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