[logback-user] Multiple JVMs writing to a single log file

Ceki Gülcü ceki at qos.ch
Fri Aug 27 20:43:18 CEST 2010

Interesting. The only explanation I would have for this behavior would 
be OS support in append mode (when you set the append property to true). 
Which JDK are you using?

On 27/08/2010 8:11 PM, Becker, Thomas wrote:
> I had a question about multiple JVMs writing to a single logfile.  I’m
> aware of the “prudent” setting on FileAppender and that its purpose is
> to allow this. But we have noticed that we are getting the expected
> behavior without turning prudent mode on. That is, we are seeing the
> output of both processes interleaved in the single file even with
> prudent=false. So my question is, are we just getting lucky? Is this due
> to the platform we’re running on (Linux) and will it break on Windows?
> Honestly we are probably going to switch to logging to separate files
> per application instance, I was just curious as to why this is working
> and what would be different ifwe enabled prudent mode.

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