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• Apache Log4j 2  + (Apache Log4j 2 is an upgrade to Log4j that … Apache Log4j 2 is an upgrade to Log4j that provides significant</br>improvements over its predecessor, Log4j 1.x:</br></br>API Separation: The API for Log4j is separate from the</br>implementation making it clear for application developers which</br>classes and methods they can use while ensuring forward</br>compatibility.</br></br>Improved Performance: Log4j 2 contains next-generation</br>Asynchronous Loggers based on the LMAX Disruptor library. In</br>multi-threaded scenarios Asynchronous Loggers have 10 times</br>higher throughput and orders of magnitude lower latency than</br>Log4j 1.x.</br></br>Support for multiple APIs: While the Log4j 2 API will provide the</br>best performance, Log4j 2 provides support for the SLF4J and</br>Commons Logging APIs.</br></br>Automatic Reloading of Configurations: Log4j 2 can automatically</br>reload its configuration upon modification. It will do so without</br>losing log events while reconfiguration is taking place.</br></br>Advanced Filtering: Log4j 2 supports filtering based on context</br>data, markers, regular expressions, and other components in the</br>Log event. Filtering can be specified to apply to all events</br>before being passed to Loggers or as they pass through Appenders.</br></br>Plugin Architecture: Log4j uses the plugin pattern to configure</br>components. As such, no code is needed to create and configure an</br>Appender, Layout, Pattern Converter, and so on. Log4j</br>automatically recognizes plugins and uses them when a</br>configuration references them.</br></br>Property Support: Properties can be referenced in a</br>configuration, Log4j will directly replace them, or Log4j will</br>pass them to an underlying component that will dynamically</br>resolve them. Properties come from values defined in the</br>configuration file, system properties, environment variables, the</br>ThreadContext Map, and data present in the event.ontext Map, and data present in the event.)

• Apache Log4j 2  +