[logback-user] logback and concurrency

Ceki Gulcu listid at qos.ch
Thu May 3 20:57:06 CEST 2007

Hi Xavier,

Logback is indeed thread safe. It means that you can perform logging from 
multiple threads. You can even reconfigure logback while other threads are still 

We recommended pattern that logger be stored as instance variables. See also


I hope this helps,

Xavier Hanin wrote:
> Hi Logback community,
> I've read somewhere that logback is thread safe, but I would like some
> confirmation about that and what does it imply. So, first, is logback
> Logger implementation thread safe? Second, what is the recommended
> pattern to get a logger and use it:
> - create and store it in a static variable
> - create and store it in an instance variable
> - create and store it in a local variable
> Thanks in advance,
> Xavier

Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.

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