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Posted to jetspeed-dev@portals.apache.org by "Ate Douma (JIRA)" <je...@portals.apache.org> on 2008/09/30 02:04:44 UTC
[jira] Updated: (JS2-500) DB Page Manager should optionally cache
negative hits to limit DB lookups.
[ https://issues.apache.org/jira/browse/JS2-500?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ate Douma updated JS2-500:
--------------------------
Fix Version/s: (was: 2.2)
2.3
Rescheduling to version 2.3 where the current OJB persistence engine *and* the caching solutions for it will be replaced with OpenJPA.
> DB Page Manager should optionally cache negative hits to limit DB lookups.
> --------------------------------------------------------------------------
>
> Key: JS2-500
> URL: https://issues.apache.org/jira/browse/JS2-500
> Project: Jetspeed 2
> Issue Type: Improvement
> Components: PSML
> Affects Versions: 2.1-dev, 2.1
> Reporter: Randy Watler
> Priority: Minor
> Fix For: 2.3
>
>
> Depending on profiling rules, the Page Manager may be asked repeatedly to lookup folders that do not exist. Since these negative hits are not cached, a query to the DB will be used to verify the fact that the folder does not exist each time. This could impact J2 performance for large numbers of concurrent users.
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