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https://issues.apache.org/jira/browse/CAMEL-5398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401332#comment-13401332
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Henryk Konsek commented on CAMEL-5398:
--------------------------------------
Actually executing the loop below:
for(int i = 0; i < 1000000; i++) {
Pattern.compile(RandomStringUtils.randomAlphabetic(100));
}
...takes ~10 seconds.
I've never benchmarked the famous Pattern.compile() efficiency but If I can
parse million of random 100-character long alphanumeric patterns in 10 seconds
(on my 700$ laptop), then I screw Pattern precompilation for the rest of my
life :) .
> Optimize String.replaceAll() to cache Patterns where suitable
> -------------------------------------------------------------
>
> Key: CAMEL-5398
> URL: https://issues.apache.org/jira/browse/CAMEL-5398
> Project: Camel
> Issue Type: Improvement
> Reporter: Henryk Konsek
> Assignee: Henryk Konsek
> Fix For: 2.11
>
>
> Inspired by issue [1] regarding performance of JMS headers, I performed a
> little search in IDE and found out that there's pretty much not optimized
> String.replaceAll() calls.
> I think it will be good to search the code base for such calls again and
> replace them with references to the static pre-compiled
> java.util.regex.Patterns. Of course if such action makes sense (like in
> StringHelper#removeQuotes()).
> [1] https://issues.apache.org/jira/browse/CAMEL-5396
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