I need to use the RollingFileAppender in a multi-threaded application.  The documentation is a
little confusing when it comes to thread safety.  The general FAQ says log4net is thread-safe, but
the appender's documentation says it's not.

Does anyone have any suggestions on how to use the RollingFileAppender in a multi-threaded
application?  Do I need to modify and try to compile the code myself?  Or should I do something
drastic, like synchronize access to the logger?

Thanks.



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I also have the same question. Thanks for bringing this up. It was my
understanding that log4net was threadsafe. Please clarify.

Thanks,
Ramesh

log4net is thread safe as it says in the FAQ.

How log4net implements this with regards to individual appenders is not
really important. The docs for the RollingFileAppender are correct, the
members of the type are not thread safe, but this is not relevant unless
you want to programmatically access the appender directly from you code.
During logging the appender's base class (AppenderSkeleton) ensures
serialisation of appending of logging events.

You do not need to add your own locking code around calls like:

log.Info("message");

or

LogManager.GetLogger("foo");

Cheers,
Nicko