
Log4j 2 is not backwards compatible with 1.x versions, although an "adapter" is available. In addition, Log4j 2 offered a plugin architecture which makes it more extensible than its predecessor.

The Apache Log4j team developed Log4j 2 in response to the problems of Log4j 1.2, 1.3, and Logback, addressing issues which appeared in those frameworks. Gülcü has since created SLF4J, Reload4j, and Logback which are alternatives to Log4j.

Log4j is one of several Java logging frameworks.

It is part of the Apache Logging Services, a project of the Apache Software Foundation. 17 September 2022 4 months ago ( 17 September 2022) Īpache Log4j is a Java-based logging utility originally written by Ceki Gülcü.
