I'm new to the list, and have a few questions about code contributions and what is generally included in the log4j core versus maintained externally.
I developed an appender that scratches a particular itch I have, which is the performance penalty of writing large amounts of logging data during development. The problem being that a fully instrumented app will write megs and megs of audit data (with logger.*=DEBUG), causing it to slow down a LOT due to pure I/O. Generally, I'm only interested in the last 1000 or so messages before a crash, making the I/O time wasted and writing a TON of log data that has to be waded through. My appender wraps the rolling file appender, and pushes the audit data into a (configurable) fixed size ring buffer that can be dumped via a simple user interface. This allows the user to go "oh, something happened, let me look at the debug output" without having to grep through 20 megs of logs.
I am planning on releasing the code under the apache license, and would be more than happy to contribute it to the project or keep it as a separate module on sourceforge, depending on the wishes of the maintainers.
Kris
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