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From "Ralph Goers (JIRA)" <j...@apache.org>
Subject [jira] Created: (LOG4J2-16) Provide support for SLF4J type Markers
Date Sun, 22 Jun 2008 22:29:45 GMT
Provide support for SLF4J type Markers

                 Key: LOG4J2-16
                 URL: https://issues.apache.org/jira/browse/LOG4J2-16
             Project: Log4j 2
          Issue Type: New Feature
          Components: Core
            Reporter: Ralph Goers

We wrote our own logging framework primarily because log4j didn't provide some of the features
we needed. One feature was more granularity, especially around logging. We encourage entry
and exit tracing, logging of input and output data, logging of elapsed time statistics and
several other flavors if "debug" information. Turning all this on in production generates
too much data. Our framework supported the concept of Log Type in addition to Log Level. When
filtering there was a LogType array where each array element was the log level. The LogRecord
contained the LogType and LogLevel so doing filtering was very fast.

SLF4J supports Markers. These can essentially be used for the same purpose (assuming another
Jira issue regarding filtering is implemented). Markers are much more flexible since they
can be arbitrarily created. Loggers should then be able to filter on whether a marker is present
in addition to the LogLevel. 

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