GELF logging for Java

https://github.com/t0xa/gelfj

For log4j2
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https://github.com/Graylog2/log4j2-gelf
https://github.com/Graylog2/gelfclient

http://stackoverflow.com/questions/26847569/how-to-get-gelfj-appender-work-in-log4j

https://mvnrepository.com/artifact/org.graylog2