How to check pruning behavior with logs?

Should add the following settings in the $JFROG_HOME/artifactory/var/etc/artifactory/logback.xml file. Do not need to restart Artifactory.

<appender name="cleanupfolder" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${log.dir}/cleanup-folder.log</File>
        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
            <layout class="org.jfrog.common.logging.logback.layout.BackTracePatternLayout">
                <pattern>%d{yyyy-MM-dd'T'HH:mm:ss.SSS, UTC}Z %boldGreen([jfrt ]) %highlight([%-5p]) [%-16X{uber-trace-id}] [%-30.30(%c{3}:%L)] [%-20.20thread] - %m%n</pattern>
            </layout>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <FileNamePattern>${log.dir.archived}/cleanup-folder.%i.log</FileNamePattern>
            <maxIndex>10</maxIndex>
        </rollingPolicy>
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>25MB</MaxFileSize>
        </triggeringPolicy>
    </appender>

    <logger name="org.artifactory.repo.cleanup.FolderPruningServiceImpl">
        <level value="debug"/>
        <appender-ref ref="cleanupfolder"/>
    </logger>

This will immediately give you the indication that we are offering the job with the promoted empty folders, like:

2023-03-13T08:39:41.267Z [jfrt ] [DEBUG] [c2acf84e5d135ab2] [c.FolderPruningServiceImpl:183] [5d135ab2|art-exec-13] - Pruning empty folder 'example-repo-local:oem/upgrade'
2023-03-13T08:39:41.272Z [jfrt ] [DEBUG] [c2acf84e5d135ab2] [c.FolderPruningServiceImpl:171] [5d135ab2|art-exec-13] - Added folder repo path 'example-repo-local:oem' to pruning queue.
2023-03-13T08:39:46.264Z [jfrt ] [DEBUG] [8b6122c67e22ae24] [c.FolderPruningServiceImpl:183] [67e22ae24|art-exec-7] - Pruning empty folder 'example-repo-local:oem'