logback real-time dynamic file name

The general configuration is time rolling log

<appender name="logAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${LOG_PATH}/log.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>${LOG_PATH}/log_%d{yyyy-MM-dd}.log</fileNamePattern>
    </rollingPolicy>
    <encoder>
        <charset>UTF-8</charset>
        <pattern>%msg%n</pattern>
    </encoder>
</appender>

If you want to generate real-time log file time-stamped, but not in order to generate the next day, then just leave out <file> tag on it

<appender name="logAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>${LOG_PATH}/log_%d{yyyy-MM-dd}.log</fileNamePattern>
    </rollingPolicy>
    <encoder>
        <charset>UTF-8</charset>
        <pattern>%msg%n</pattern>
    </encoder>
</appender>