>If I set >maximumFileSize=10MB and maxSizeRollBackups=10, I will get 10 files for a ><Day> with total size 100MB. During the next day (<Day+1>) I will get >another 10 files for the <Day+1> with total size 100MB; the previous 10 >files (ones for the <Day>) will NOT be removed when new files (for the ><Day+1>) start appearing. > >I really tested the Appender in such situation. > >So, the limit affects EACH SINGLE DAY; but not the whole bunch of .log >files >in teh given folder
Now I got your point. However, keeping files of past days once the rolling runs by date is a feature documented also at [2]. There it says: -- quote -- This example show how to configure the RollingFileAppender to roll log files on a date period and within a date period on file size. For each day only the last 10 files of 1MB will be kept. -- eof quote -- Since you only want to limit the file count anyway, it makes sense to not roll by date but by file size, doesn't it? Doing so gives you the wanted behaviour, but filenames won't contain the date. Sorry for the inconvenience. Clearly the above is only a workaround and a date in the filename would be nice, but it is not trivial to implement such a rolling without being computationally expensive. The problem lies in identifying the files that should be deleted even if those files are many thousands or their filename contains a date that is years in the past. One can either probe a filename or probe if there is a file for a specific date. Both strategies do not fit into the current implementation of the rolling file appender. There are several known problems with the rolling file appender and a rewrite is in discussion. To document this discussion I've CC'ed the dev mailing list. If you believe that you need this as a feature, please leave a feature request in JIRA at [1]. Of course it is no guarantee that one of the developers will work on this issue any time soon, and therefore I encourage you to actively work on it if you need it soon. Patches that improve log4net are always welcome! Best regards, Dominik [1] https://issues.apache.org/jira/browse/LOG4NET [2] http://logging.apache.org/log4net/release/config-examples.html