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https://issues.apache.org/jira/browse/LOG4J2-3459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17515077#comment-17515077
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Ralph Goers commented on LOG4J2-3459:
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If you profile start up what shows up as the hot spots?
> Reduce use of class static initialization blocks
> ------------------------------------------------
>
> Key: LOG4J2-3459
> URL: https://issues.apache.org/jira/browse/LOG4J2-3459
> Project: Log4j 2
> Issue Type: Improvement
> Components: API, Core
> Reporter: Matt Sicker
> Priority: Major
>
> There are numerous classes that use static initializer blocks to perform
> computation for caching some results. These should all generally be deferred
> until some other reference to the class such as instantiation of use of a
> singleton getter method.
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