Mastering Log4j2: Logging in Spring Boot 3

In this tutorial, you will learn how to master Log4j2 for Spring Boot in 2024. We will delve into the intricacies of logging in Spring Boot 3 using Log4j2, covering best practices and advanced techniques to optimize your logging capabilities. Whether you are a beginner or an experienced developer, this video will equip you with the knowledge and skills needed to effectively utilize Log4j2 in your Spring Boot projects. Stay tuned and enhance your logging skills today!
Add the Log4j2 dependency into our project's pom.xml file.
To use the Log4j2 library rather than the default Logback, we need to exclude Logback from our starter dependencies. Also, we need to add spring-boot-starter-log4j2 dependencies to our pom.xml file.
Next, create a log4j2.xml file in the src/main/resources folder of your project.
In the log4j2.xml file, you can configure your logging properties such as log levels, appenders, and log formats.
I will explain in detail what are those keyword (log levels, appender, and log format)
Logging Levels: Log4j supports multiple logging levels, including DEBUG, INFO, WARN, ERROR, and FATAL. Developers can choose the appropriate level based on the severity of the message they want to log.
Configurability: Log4j allows developers to configure logging behavior through configuration files (such as XML or properties files) or programmatically. This configuration includes settings for logging levels, log file appenders, log formats, and more.
Appenders: Log4j uses the concept of "appenders" to specify where log messages should be outputted. Common appenders include the console appender, file appender, rolling file appender, SMTP appender (for sending emails), and more. Developers can also create custom appenders as needed.
In Log4j 2, the (Appender) tag is used to define the destination or output location for log messages. Appenders specify where log events should be written, such as to the console, a file, a database, or a network socket.
PatternLayout is a key component of the Log4j logging framework that allows developers to define the format of log messages.
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[@kennedyodhiambo2010]

Exactly what i was looking for, no bs ... just straight up content. NIce video!

[@JavaTechSolutions]

@@kennedyodhiambo2010Thanks

[@vinithachinthalapally6792]

Where can I find your video on implementating MDC in logging

[@JavaTechSolutions]

Please check my tutorial if added or I will add another tutorial when I can add mdc

[@vinithachinthalapally6792]

Can we use @slf4j annotation instead of adding logger manually?

[@JavaTechSolutions]

Yes.. you can use it but for customisation we can use our own formatter