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https://issues.apache.org/jira/browse/QPID-7449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15565005#comment-15565005
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Keith Wall commented on QPID-7449:
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Alex and I paired on this change.

> [Java Broker] Cache the ACL result for the system-user ACL provider
> -------------------------------------------------------------------
>
>                 Key: QPID-7449
>                 URL: https://issues.apache.org/jira/browse/QPID-7449
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Broker
>            Reporter: Keith Wall
>             Fix For: qpid-java-6.1
>
>
> Profiling has shown that the continual evaluation of 
> {{AccessController.getContext()}} gives a hotspot.  This change eliminates 
> the hotspot by caching the access control control in the same way as other 
> access control providers.



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