ejemplo de logback

logback.xml

<!-- https://www.playframework.com/documentation/latest/SettingsLogger -->
<configuration>

  <conversionRule conversionWord="coloredLevel" converterClass="play.api.libs.logback.ColoredLevel" />

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
      <providers>
        <pattern>
          <pattern>
            {
            "time": "%date{yyyy-MM-dd'T'HH:mm:ss.SSS'Z'}",
            "lvl": "%level",
            "logger": "%logger{15}",
            "thread": "%thread",
            "msg": "%message"
            }
          </pattern>
        </pattern>
        <logstashMarkers/>
        <arguments/>
        <stackTrace/>
      </providers>
    </encoder>
  </appender>

  <appender name="ASYNCSTDOUT" class="ch.qos.logback.classic.AsyncAppender">
    <discardingThreshold>0</discardingThreshold>
    <appender-ref ref="STDOUT" />
  </appender>

  <logger name="play" level="INFO" />
  <logger name="application" level="INFO" />
  <logger name="com.telefonica.baikal" level="INFO" />
  <logger name="com.zaxxer.hikari" level="DEBUG"/>

  <root level="WARN">
    <appender-ref ref="ASYNCSTDOUT" />
  </root>

</configuration>