
Hi, I'm unsure from the documentation but does SizeAndTimeBasedFNATP support prudent mode. I have the following config: <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <prudent>true</prudent> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>target/Test-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>1KB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>30</maxHistory> </rollingPolicy> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> I've tried this and logback doesn't complain and file does rollover but just wondering is the prudent flag used?