Hi Xavier, Many thanks for your compliment. Would you care to create a bug report asking for an enhancement of the documentation as you describe in your email? You can do so under the logback-site/documentation heading [1]. The logback-demo [2] gives an example of how you could use markers. In a nut shell, you mark logging request with a marker and those marked request can be filtered accordingly. For example, assume you marked a request as "TRACE" as shown below: package ch.qos.logback.demo; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.slf4j.Marker; import org.slf4j.MarkerFactory; public class MarkerExample { static Marker TRACE_MARKER = MarkerFactory.getMarker("TRACE"); Logger logger = LoggerFactory.getLogger(MarkerExample .class); public void aMethod() { logger.info(TRACE_MARKER, "Hello world"); } } You can then instruct a turbo filter to drop requests marked with "TRACE" as follows: <turboFilter class="ch.qos.logback.classic.turbo.MarkerFilter"> <Name>TRACE</Name> <Marker>TRACE</Marker> <OnMatch>DENY</OnMatch> </turboFilter> Does the above help? [1] http://bugzilla.qos.ch/enter_bug.cgi?product=logback-site [2] http://logback.qos.ch/demo.html At 10:05 AM 2/3/2007, Xavier Hanin wrote:

Hi All,

I'm new to logback, I've read a good part of the documentation, and first I should said that I'm impressed by the quality of the documentation and the feature rich logging system you provide.

Two things: Question: I have trouble to understand what is a Marker and what is the use case behind them. Could you give me some insight? Remark: While reading the documentation I had the feeling that MDC was introduced too late. Indeed, you reference MDC the first time in chapter 2 (as far as I can say), without giving even an hint on what it is. Several other chapters reference this concept, but it's only in chapter 7 that I understood what it is. Maybe adding a short introduction to this concept (and the concept of Marker) in chapter 2 would help the reader?

Thanks for your great work!

Xavier _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://qos.ch/mailman/listinfo/logback-user

-- Ceki Gülcü Logback: The reliable, generic, fast and flexible logging framework for Java. http://logback.qos.ch