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https://issues.apache.org/jira/browse/MCHECKSTYLE-440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Osipov closed MCHECKSTYLE-440.
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Resolution: Information Provided
> how to reuse the checkstyle cache from a new environment
> --------------------------------------------------------
>
> Key: MCHECKSTYLE-440
> URL: https://issues.apache.org/jira/browse/MCHECKSTYLE-440
> Project: Maven Checkstyle Plugin
> Issue Type: Task
> Components: checkstyle:check
> Affects Versions: 3.3.0
> Reporter: Nianjun Sun
> Priority: Major
>
> Hi, dear Checkstyle plugin team,
>
> This is Nianjun from the Apache/ShardingSphere team. Recently, we added the
> checkstyle:check as required check in our GitHub action. This action is
> triggered by every single pull request and checks the Java code style for all
> modules.
>
> I noticed that running checkstyle:check takes almost 1 minute to check nearly
> 300 modules.this takes too much time for the reviewer to merge the code. I
> know that Checkstyle generates a cache file called 'checkstyle-cachefile' in
> the target folder. So, I tried caching all 'checkstyle-cachefile' files in
> the target folder by
> actions/cache@v3 for the next GitHub action run.
> However, this approach didn't work and I'm not sure how the Checkstyle cache
> works...
>
> Interestingly, when I execute the command `mvn checkstyle:check
> -Dcheckstyle.skip=false -T1C` twice in our GitHub action, it only takes 15
> seconds on the second run. This makes me think that the cache file is working.
>
> I also tried downloading these 'checkstyle-cachefile' files from GitHub's
> cache and putting them in each module's target folder, but it still takes 1
> minute to complete.
>
> I'm not sure if 'checkstyle-cachefile' has an expiration period or if it
> depends on some environment information or something else entirely. Could you
> please provide some tips or give me a brief description of how
> 'checkstyle-cachefile' works?
>
> Thank you!
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