What is the difference between log4j RollingFileAppender vs DailyRollingFileAppender

What is the difference between log4j RollingFileAppender vs DailyRollingFileAppender? And why would 开发者_如何学运维I use one versus the other?

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Reading http://www.mail-archive.com/log4j-user@logging.apache.org/msg08183.html

• DailyRollingFileAppender - Rotates based on dateFormat
• RollingFileAppender - Rotates based on a maximum file size.

Also check:

http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/RollingFileAppender.html

http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/DailyRollingFileAppender.html

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On DailyRollingFileAppender the file is rolled over at a user chosen frequency, but on RollingFileAppender the file is rolled when the file reaches certain size.