Logback 日志文件轮换策略

Question

我在 logback.xml 中使用以下内容。这仅保留 21 个文件并删除较旧的日志文件。谁能建议如何停止文件删除？

<appender name="MY_UPDATES_APPENDER"
    class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!--See also http://logback.qos.ch/manual/appenders.html#RollingFileAppender -->
    <File>logs/upilogs/upi-app.log
    </File>
    <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
        <fileNamePattern>logs/upilogs/my-app.%i.log
        </fileNamePattern>
        <minIndex>1</minIndex>
        <maxIndex>50</maxIndex>
    </rollingPolicy>
    <triggeringPolicy
        class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
        <maxFileSize>200MB</maxFileSize>
    </triggeringPolicy>
    <encoder>
        <Pattern>%d %X %-5level %logger{36} - %msg%n%ex</Pattern>
    </encoder>
</appender>

Answer 1

这是一个 feature的回退。从链接的 URL 引用

Given that the fixed window rolling policy requires as many file renaming operations as the window size, large window sizes are strongly discouraged. When large values are specified by the user, the current implementation will automatically reduce the window size to 20.