How to keep rolling log file as per file size?
<p>I am working on a project in which I am logging bunch of stuff in a file and I want to make sure my log file is getting rolled as soon as a fixed limit for file is reached. I have a below <code>logback.xml</code> file but it looks like file size is not working. I see my file size as 793M but limit I have is 100M</p>

<pre><code>&lt;configuration&gt;
    &lt;appender name="FILE" class="ch.qos.logback.core.FileAppender"&gt;
        &lt;file&gt;process.log&lt;/file&gt;
        &lt;triggeringPolicy
            class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy"&gt;
            &lt;maxFileSize&gt;100MB&lt;/maxFileSize&gt;
        &lt;/triggeringPolicy&gt;
        &lt;rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy"&gt;
            &lt;fileNamePattern&gt;process%i.log&lt;/fileNamePattern&gt;
            &lt;minIndex&gt;1&lt;/minIndex&gt;
            &lt;maxIndex&gt;9&lt;/maxIndex&gt;
        &lt;/rollingPolicy&gt;
        &lt;encoder&gt;
            &lt;pattern&gt;%date %level [%thread] %msg%n&lt;/pattern&gt;
            &lt;!-- this improves logging throughput --&gt;
            &lt;immediateFlush&gt;true&lt;/immediateFlush&gt;
        &lt;/encoder&gt;
    &lt;/appender&gt;

    &lt;appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"&gt;
        &lt;!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder 
            by default --&gt;
        &lt;encoder&gt;
            &lt;pattern&gt;%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
            &lt;/pattern&gt;
        &lt;/encoder&gt;
    &lt;/appender&gt;

    &lt;root level="INFO"&gt;
        &lt;appender-ref ref="FILE" /&gt;
        &lt;appender-ref ref="STDOUT" /&gt;
    &lt;/root&gt;
&lt;/configuration&gt;
</code></pre>

<p>What wrong I am doing here? And also what is the best policy we should follow in production in terms of logging? We are logging bunch of stuff in a file and we don't want to fill up the disk with this log file.</p>