Hi,<div><br></div><div>I&#39;m using SiftingAppender on top of an appender that uses compression. When using a variable (like username) that will show up more than once, it works great. But when using a session id which is unique, then the log file will not be triggered for compression leading to larger disk usage. Is there a way to go about triggering the file to be compressed when the SiftingAppender closes the child appender after it&#39;s timeout period?</div>
<div><br></div><div>Definition of my appender:</div><div>  &lt;appender name=&quot;SIFT-SESSION_ID&quot; class=&quot;ch.qos.logback.classic.sift.SiftingAppender&quot;&gt;</div><div><div>    &lt;discriminator class=&quot;ch.qos.logback.classic.sift.MDCBasedDiscriminator&quot;&gt;</div>
<div>      &lt;key&gt;SESSION_ID&lt;/key&gt;</div><div>      &lt;defaultValue&gt;unknown&lt;/defaultValue&gt;</div><div>    &lt;/discriminator&gt;</div><div>    &lt;sift&gt;</div><div>      &lt;appender name=&quot;FILE-${SESSION_ID}&quot; class=&quot;ch.qos.logback.core.rolling.RollingFileAppender&quot;&gt;</div>
<div>        &lt;encoder&gt;</div><div>          &lt;pattern&gt;%d{yyyy-MM-dd HH:mm:ss.SSS zz} %-5level [%thread] %logger{35} - %msg%n%xEx{full}&lt;/pattern&gt;</div><div>        &lt;/encoder&gt;</div><div>        &lt;rollingPolicy class=&quot;ch.qos.logback.core.rolling.TimeBasedRollingPolicy&quot;&gt;</div>
<div>          &lt;fileNamePattern&gt;${CONTEXT_DATA_PATH}/logs/session/session-${SESSION_ID}.%d{yyyy-MM-dd}.%i.txt.zip&lt;/fileNamePattern&gt;</div><div>          &lt;timeBasedFileNamingAndTriggeringPolicy class=&quot;ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP&quot;&gt;</div>
<div>            &lt;maxFileSize&gt;100MB&lt;/maxFileSize&gt;</div><div>          &lt;/timeBasedFileNamingAndTriggeringPolicy&gt;</div><div>        &lt;/rollingPolicy&gt;</div><div>      &lt;/appender&gt;</div><div>    &lt;/sift&gt;</div>
<div>  &lt;/appender&gt;</div></div><div><br></div><div>Thanks!</div><div>-- TJ</div>