pekko-sample-persistence-java/src/test/resources/logback-test.xml

<configuration>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>[%date{ISO8601}] [%level] [%logger] [%marker] [%thread] - %msg%n</pattern>
        </encoder>
    </appender>

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

</configuration>