[logback-user] Logback configuration

[Neha Kothari]

If I have a configuration file like the following:

<appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>test.log</File>
        <encoder>
            <pattern>... </pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>test.%d{yyyy-MM}.%i.log</fileNamePattern>
            <maxHistory>2</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>

The max history parameter here , does it mean

test.2011-04.0.log
test.2011-04.1.log
And then renaming test.log.2011-04.1.log to test.2011-04.0.log. The new logs go to the file test.2011-04.1.log

Or does it mean

test.2011-04.0.log
test.2011-04.1.log
test.2011-04.2.log
test.2011-04.3.log
test.2011-04.4.log..... Having as many index as needed. But saving this files for 2 months. So that we have something like the following:


test.2011-04.0.log
test.2011-04.1.log
test.2011-04.2.log
test.2011-04.3.log.......
test.2011-05.0.log
test.2011-05.1.log......

Now when we have logs for 2011-06 delete the logs for 2011-04.

Which condition applies when you have maxHistory for a filename pattern like
'<fileNamePattern>test.%d{yyyy-MM}.%i.log</fileNamePattern>'

Thanks
Neha


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