David, Parameterized logging is not available for exceptions. Given that exceptions by definition are rare, you don't need to optimize logging for them. You just write: logger.error("Something went wrong because " + someReason, exception); The difference in performance is measured in terms of microseconds which is usually not significant in case of exceptions. Does the above make sense? c_inconnu2 wrote:

Hi,

First, I was looking for a more recent log framework than log4j and I just discovered logback : thanks for this great piece of software. I am using it for a couple of hours now and I have a question about usage :

With log4j i had : logger.error("Something went wrong because " + someReason, exception);

But with logback (SLF4J) I have to keep this since the signature is : void org.slf4j.Logger.error(String msg, Throwable t)

I would have thought that something like below had existed : void org.slf4j.Logger.error(String msg, Throwable t, Object[])

so i would have written logger.error("Something went wrong because {}", exception, someReason);

Any advice ? Thanks

David

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