How to rotate log files based on time rather than size in Log4j?

Question

I use Log4j with the RollingFileAppender to create a log rotation based on size.

How can I configure it to log to each file for a certain amount of

Answer 1

Use a DailyRollingFileAppender.

In particular, setting its 'datePattern' property to '.'yyyy-MM-dd-HH would cause file to rotate every hour.