Tag: log4j2

All the articles with the tag "log4j2".

• Using Log4j2 (Part 3): Different Configurations for Different Environments

  15 Jul, 2023

  Explains ways to use different Log4j2 output formats and configurations across environments, including SystemPropertyArbiter, property substitution, custom Lookup plugins, and ScriptAppenderSelector. It discusses the choice between startup options and code extensions in the context of project deployment workflows.

• Using Log4j2 (Part 2): Changing Log Levels at Runtime

  20 Jun, 2022

  Two ways to adjust Log4j2 log levels without restarting an application: changing the configuration through JMX in JConsole, or calling the programmatic configuration API through an HTTP endpoint. A production troubleshooting scenario illustrates when each approach is useful.

• Using Log4j2 (Part 1)

  22 May, 2022

  This post sorts out Log4j2's architecture and the responsibilities of each component, using UML class diagrams to explain how the configuration fits together. Through examples, it covers log output and rollover policies, uncaught exception handling, bridges from other logging frameworks, and how to enable and verify asynchronous logging.