How to configure multiple log files with logback?

Logback allows you to configure multiple appenders to set up multiple log files.

Firstly, in the logback configuration file (usually logback.xml), you can define multiple appenders and specify different log file paths and formats for each appender. For example:

<configuration>
    <appender name="FileAppender" class="ch.qos.logback.core.FileAppender">
        <file>/path/to/first/log/file.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <appender name="AnotherFileAppender" class="ch.qos.logback.core.FileAppender">
        <file>/path/to/second/log/file.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <root level="INFO">
        <appender-ref ref="FileAppender"/>
        <appender-ref ref="AnotherFileAppender"/>
    </root>
</configuration>

In the example above, two appenders are defined: FileAppender and AnotherFileAppender, each used to write to different log files. Each appender specifies the log file path through the element and the log format through the element.

Finally, in the element, both appenders were added to the root logger using the element, so that all log information will be simultaneously output to these two log files.

You can define more appenders based on actual needs and reference them in the root logger to configure additional log files.