How Log4j, SLF4j, Jakarta Commons Logging, Logback and Reload4j Happened

previously Ceki on airhacks.fm: "#241 Simplicity is a Good Incentive", Log4j was used inside a 2FA application, Zurich Research Lab Log (ZRL) became Log4j, Log4j was published at IBM developer works, Kent Beck on unit testing, the purpose of unit testing, the hierarchical filtering in Log4j, mapping log levels to exceptions, business logs and system logs, ndc, Logback markers, selling a self-published Log4j book, Log4j and LMAX Disruptor, Log4j 2 is only loosely related to Log4j v1, Jakarta Commons Logging is a logging facade, Log4j 2 is the successor of Logback, Logback is the native implementation of slf4j, SLF4j provides a narrow Logging API, reload4j is a forked and maintained version of Log4j v1, using jelly to program XML

Ceki Guelcue on twitter: @ceki