Log4j2 PatternLayout Cheatsheet

Kotlin & Java

In Log4j2 for Kotlin I’ve showed you how to configure a basic logger with log4j2. If you use a PatternLayout like this appender.console.layout.type = PatternLayout appender.console.layout.pattern = %m%n you can customize the appearance of the output. eg. appender.console.layout.pattern = %d{yyyy-mm-dd-HH:mm:ss.SSS} %-4p %C{1}.%M [%t] – %m%n%ex Parameter Parameter Meaning %m The log message %n line break…

Log4j2 for Kotlin

Kotlin & Java

Motivation Logging is a common good practice in software engineering. It enables you to monitor applications in production to gather information about crashes and other malfunctions for further analysis. It is the “little brother” of debugging and often a precursor for setting up test cases which can lead to reproducing the bugs on the developers…