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https://issues.apache.org/jira/browse/KNOX-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16980444#comment-16980444
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Kevin Risden commented on KNOX-2136:
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Might want to look at https://github.com/ben-manes/caffeine which is used in a
bunch of projects. It seems to have evolved out of Guava. I think a
"write-through" cache is probably right here to be able to cache reads but then
ensure updates are correct.
> Caching for keystore-based AliasService implementation
> ------------------------------------------------------
>
> Key: KNOX-2136
> URL: https://issues.apache.org/jira/browse/KNOX-2136
> Project: Apache Knox
> Issue Type: Improvement
> Components: Server
> Affects Versions: 1.3.0
> Reporter: Philip Zampino
> Priority: Major
> Fix For: 1.4.0
>
>
> Performance testing has revealed that as the number of keys increases, the
> performance of keystores degrades significantly. We should investigate the
> feasibility and potential benefit of adding in-memory caching of aliases in
> the keystore(file)-based AliasService implementation.
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