log4j based loggers

Introduction#

Pros and Cons of different loggers which can be used to create a log4j-formatted log to be viewed using the Log4View viewer.

I will review 3 loggers in this article, Log4cxx, Log4cplus and Log4cpp.

currently undergoing Incubation - there is no official release
update/bug fixes once in the past 12 years, last release was 2008
user can select different LogLevels – TRACE, DEBUG, INFO, WARN, ERROR, and FATAL
hierarchical Loggers
it is possible to log asynchronously
supports multiple appenders
user can select to enabled or disabled the logger
log can be sent to different and multiple output targets
user selected output formats
well documented
is licensed under the Apache License, an open source license certified by the Open Source Initiative

updates/bug fixes - last release was Jan. 2016
user can select select different LogLevels – TRACE, DEBUG, INFO, WARN, ERROR, and FATAL hierarchical Loggers
supports multi–threaded applications but is not safe to be used from asynchronous signals’ handlers
user selected output format: SimpleLayout, PatternLayout, TTCCLayout
supports multiple loggers
not well documented
is licensed under the Apache License V2.0

bug fixes are about once a year, last release was April 2015
supports multi-threaded applications •no clear documentation exist
is licensed under the GNU Lesser General Public License (LGPL) as of version 0.2.1, before that have been released under the GPL.