logback totalSizeCap 无效 和maxHistory无效 解决


totalSizeCap 无效 升级logbackjar包到1.1.8版本,最好升级到1.2.0版本,因为1.2.0解决了当文件总大小大于2G时不能自动删除旧文件的问题,因为源码中有个文件大小判断是错误的。

源自https://tidyko.com/posts/589711b0.html

maxHistory 无效,需要增加一个设置 <cleanHistoryOnStart>true</cleanHistoryOnStart>,在只有设置为true并且 maxHistory 不为零才能起效。

源自https://www.jianshu.com/p/d9c08785430a

所以修改后的配置应该是

<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
<!-- rollover daily -->
<fileNamePattern>${LOG_HOME}/consumer.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<!-- each file should be at most 100MB, keep 60 days worth of history, but at most 20GB -->
<maxFileSize>50MB</maxFileSize>
<maxHistory>30</maxHistory>
<totalSizeCap>2GB</totalSizeCap>
<cleanHistoryOnStart>true</cleanHistoryOnStart>
</rollingPolicy>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
</appender>

  

最后的

<root level="INFO">
<appender-ref ref="FILE" />
</root> 

不能少了 ,根据实际配置来,appender name = 后面的参数是啥,就在<appender-ref ref="" /> 写啥

 

例子:

修改前:

<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
	<fileNamePattern>${log.home}/ui/${loggingUserId}/mylog_user_%d{yyyy-MM-dd}.log</fileNamePattern>
	<MaxHistory>7</MaxHistory>
</rollingPolicy>

  

修改后(增加【<cleanHistoryOnStart>true</cleanHistoryOnStart>】这一行):

<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
	<fileNamePattern>${log.home}/ui/${loggingUserId}/mylog_user_%d{yyyy-MM-dd}.log</fileNamePattern>
	<MaxHistory>7</MaxHistory>
	<cleanHistoryOnStart>true</cleanHistoryOnStart>
</rollingPolicy>

  


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