fx-monitor/logs/logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

  <appender name="JSON" class="ch.qos.logback.core.ConsoleAppender">
    <encoder class="net.logstash.logback.encoder.LogstashEncoder">
      <includeContext>true</includeContext>
      <provider class="net.logstash.logback.composite.loggingevent.LoggingEventPatternJsonProvider">
        <pattern>{"ts":"%d{yyyy-MM-dd'T'HH:mm:ss.SSS'Z'}","level":"%level","logger":"%logger","msg":"%msg","traceId":"%X{traceId:-}","uri":"%X{uri:-}","duration":"%X{duration:-0}","userId":"%X{userId:-}","event":"%X{event:-}","error":"%X{error:-}"}</pattern>
      </provider>
    </encoder>
  </appender>

  <appender name="ASYNC_JSON" class="ch.qos.logback.classic.AsyncAppender">
    <appender-ref ref="JSON" />
  </appender>

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

</configuration>