log4j Asynchronous Log Problem analysis

1. Are the common Dailyrollingfileappender and rollingfileappender synchronized?

1.1 Code Analysis

2. What is asynchronous Appender provided by the log4j 1.2.x? Asyncappender

2.1 Asyncappender Configuration

2.2 Asyncappender Analysis

3. log4j 2.x asynchronous log problem solution and analysis

3.1 log4j 2.x asynchronous log problem solutions

3.2 log4j 2.x high performance key for asynchronous logs

1. Are the common Dailyrollingfileappender and rollingfileappender synchronized? 1.1 Code Analysis

Dailyrollingfileappenderrollingfileappender  Writerappender.append (loggingevent event)    QuietWriter.write (String string)

Analysis of the code, the end relies on the Quietwriter write method, this method is synchronous.

So it's very clear that these two appender are not asynchronous.

2. What is asynchronous Appender provided by the log4j 1.2.x? AsyncAppender2.1 Asyncappender Configuration

Official explanation, Asyncappender must use the configuration in XML form

Important Note: The AsyncAppender can only is script configured using the DOMConfigurator .

Configuration examples

2.2 Asyncappender Analysis

3. log4j 2.x asynchronous log problem solution and Analysis 3.1 log4j 2.x solutions for asynchronous log problems 3.2 log4j 2.x asynchronous log high performance key

log4j Asynchronous Log Problem analysis