异步日志
Log4j 2 Asynchronous Loggers for Low-Latency Logging - Apache Log4j 2
Log4j 2使用Disruptor实现异步日志，获得低延时和高吞吐量。
配置如下
<configuration status="WARN">
<appenders>
<!-- Async Loggers will auto-flush in batches, so switch off immediateFlush. -->
<FastFile name="FastFile" fileName="async.log" immediateFlush="false" append="false">
<PatternLayout>
<pattern>%d %p %c{1.} [%t] %m %ex%n</pattern>
</PatternLayout>
</FastFile>
</appenders>
<loggers>
<root level="info" includeLocation="false">
<appender-ref ref="FastFile"/>
</root>
</loggers>
</configuration>
