<!-- encoders are assigned the type
ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
<encoder>
- <pattern>%d{HH:mm:ss.SSS} %-5level %logger{100} - %msg%n</pattern>
+ <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{100} - %msg%n</pattern>
</encoder>
</appender>