Is the default file appended of Logback:
ch.qos.logback.core.FileAppender
synchronous or asynchronous? It seems to be synchronous as the logs are being shown as part of same thread.
Asynchronous logging can improve your application's performance by executing the I/O operations in a separate thread. Log4j 2 makes a number of improvements in this area. Asynchronous Loggers are a new addition to Log4j 2. Their aim is to return from the call to Logger.
In synchronous mode, the logger writes entries directly to the destination. In asynchronous mode, the logger writes entries to a queue, then later writes the entries from the queue to the destination.
Logback is a logging framework for Java applications, created as a successor to the popular log4j project. In fact, both of these frameworks were created by the same developer.
Log4j, Logback, and Log4j2 are good logging frameworks that are broadly used. So which one should you use? I recommend using Log4j2 because it's the fastest and most advanced of the three frameworks. Logback is still a good option, if performance is not your highest priority.
Most appenders are synchronous, for example, RollingFileAppender
. To enable async logging, you must wrap an appender with AsyncAppender
to create an async appender based on the sync one, and it could be done easily in XML like below.
<appender name="ASYNC-VERSION-APPENDER" class="ch.qos.logback.classic.AsyncAppender">
<appender-ref ref="DEFAULT-APPENDER"/>
</appender>
<logger name="ASYNC-LOGGER" level="INFO" additivity="false">
<appender-ref ref="ASYNC-VERSION-APPENDER"/>
</logger>
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