log4net 設置先緩存再存儲

在log4net的 config中設置：

 <log4net>
    <root>
      <level value="DEBUG"/>
      <appender-ref ref="BufferingForwardingAllAppender"/>
    </root>

    <appender name="BufferingForwardingAllAppender" type="log4net.Appender.BufferingForwardingAppender">
      <bufferSize value="30" />
      <appender-ref ref="NormalRollingFileAppender" />
      <Fix value="0"/>
      <!-- Set Fix flag to NONE -->
    </appender>
    <appender name="NormalRollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <encoding type="System.Text.UTF8Encoding"/>
      <file value="./log/" />
      <param name="AppendToFile" value="true" />
      <param name="MaxSizeRollBackups" value="-1" />
      <param name="StaticLogFileName" value="false" />
      <param name="ImmediateFlush" value="true" />
      <param name="RollingStyle" value="Composite" />
      <param name="maximumFileSize" value="1GB" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <param name="DatePattern" value="yyyy-MM-dd.&quot;COMPASS.log&quot;"  />
      <!--<param name="DatePattern" value="Log/Debug/yyyyMMdd.log"/>-->
      <!--<param name="CountDirection" value="1"/>-->

      <layout type="log4net.Layout.PatternLayout">
        <!-- Print the date in ISO 8601 format -->
        <!--<conversionPattern value="%date %-5level [%thread] %logger - %message%newline" />-->
        <conversionPattern value="[%date] [%-5level] [線程:%-2t] [%-20logger{1}] - %message%newline" />
      </layout>

      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="INFO" />
        <param name="LevelMax" value="FATAL" />
      </filter>
    </appender>
</log4net>

如代碼所示，設置完畢後，log先進入buffer進行緩存，然後在第31條，輸出 到文本中。

關於 Fix value=0  據說默認是all，不設置的話影響效率，本人拷貝代碼，未驗證