Re: Aspect questions?
Novice wrote:
Arved Sandstrom wrote:
Also while we are at it, I recommend
http://www.javacodegeeks.com/2011/01/10-tips-proper-application-logging
.html as a good list of tips for application logging.
Interesting article! I'm not finished yet but the 6th of his tips seems
very counter-intuitive. He strongly advocates not including the class
name and method name in the log records. To my way of thinking, those are
among the most essential parts of the message. If I don't know where the
message was written, how am I supposed to find the source code to debug
it?
By the content of the message, duh.
The problem with using the logger to reflectively obtain the class and method
name is that the documentation claims it is a horrid performance penalty, as
you would know if you read the logger documentation.
I really don't see what he's saying. Is he assuming that the class name
and method name will be inferred in some other way anyway so it isn't
No, he's recommending that if you need that information that you include it in
your message explicitly, not by inference.
necessary to include that in each log message? If so, how will it be
determined? Otherwise, this tip doesn't seem to make any sense.
There's that word "seem" again. You need to stop using it.
You know damn well that the tip makes sense. You just don't know how yet.
"Seems" is putting a wall between you and comprehension.
As far as the cost of using the logger to elicit class and method information,
that probably won't matter as much as the documentation claims. At level
WARN[ING] and above, performance is probably not an issue, and below that you
usually have logging disabled, and performance again is not an issue. When you
do have DEBUG [FINE] enabled, you probably aren't examining performance and
again it doesn't matter. So I tend to go ahead and use the logger to show
class and method data.
Since you can change this by altering the configuration file without
rebuilding the app, it's a non-issue. You just change the logging output as
you need when you need to.
--
Lew
Honi soit qui mal y pense.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Friz.jpg