My openHAB logback config, that breaks up the log based on file size and limits the amount of archives

logback.xml

<configuration scan="true">

	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
			<pattern>%d{HH:mm:ss.SSS} [%-5level] [%-30.30logger{36}:%-5line] - %msg%n</pattern>
		</encoder>
	</appender>


	<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<file>${openhab.logdir:-logs}/openhab.log</file>

		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<fileNamePattern>${openhab.logdir:-logs}/openhab.%i.log</fileNamePattern>
			<minIndex>1</minIndex>
			<maxIndex>3</maxIndex>
		</rollingPolicy>

		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<maxFileSize>250KB</maxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{35} - %msg%n</pattern>
		</encoder>
	</appender>



	<appender name="EVENTFILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<file>${openhab.logdir:-logs}/events.log</file>

		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<fileNamePattern>${openhab.logdir:-logs}/events.%i.log</fileNamePattern>
			<minIndex>1</minIndex>
			<maxIndex>3</maxIndex>
		</rollingPolicy>

		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<maxFileSize>250KB</maxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{35} - %msg%n</pattern>
		</encoder>
	</appender>



	<logger name="runtime.busevents" level="WARN" additivity="false">
		<appender-ref ref="EVENTFILE" />
		<appender-ref ref="STDOUT" />
	</logger>

	<logger name="org.openhab" level="WARN" />
	<logger name="org.openhab.binding.knx" level="WARN" />
	<logger name="org.openhab.binding.onewire" level="WARN" />
	<logger name="org.openhab.ui" level="WARN" />
	<logger name="org.openhab.ui.webapp" level="WARN" />
	<logger name="org.openhab.ui.webapp.internal.servlet" level="WARN" />
	<logger name="org.openhab.io.net" level="WARN" />
	<logger name="org.openhab.core.autoupdate" level="WARN" />
	<logger name="org.openhab.core.persistence.internal" level="WARN" />
	<logger name="org.openhab.core.transform.internal.service.MapTransformationService" level="WARN" />
	<logger name="org.openhab.binding.vdr" level="WARN" />
	<logger name="org.openhab.model.core.internal.folder" level="WARN" />
	<logger name="org.openhab.io.dropbox" level="WARN" />

	<logger name="OSGi" level="WARN" />
	<logger name="org.eclipse.jetty" level="WARN" />

	<root level="INFO">
		<appender-ref ref="FILE" />
		<appender-ref ref="STDOUT" />
	</root>

	<logger name="org.openhab.io.dropbox" level="WARN" />

	<!-- temporary workaround for https://github.com/openhab/jupnp/issues/9 -->
	<logger name="javax.jmdns.impl.DNSIncoming" level="ERROR"/>

	<!-- temporary workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=402750 -->
	<logger name="OSGi" level="OFF" />

</configuration>