Logback configuration for versions < 0.9.19

logback.xml

<configuration debug="true" scan="true" scanPeriod="30 seconds">

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

  <root level="warn">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>