Logback is provided out of the box with Spring Boot when you use one of the Spring Boot starter dependencies as they include spring-boot-starter-logging providing logging without any configuration and can be altered to work differently if required. Here is an XML example to configure Logbackusingactive Spring profiles. Logs must Notably, if you use Logback, you should use : as the delimiter between a property name and its default value and not use :-. For example. This appender, similar to random access file, is always buffered with the default size of 256 * 1024 bytes, which is not configurable. Spring Boot contains them too. Asynchronous logging can improve your application's performance by executing the I/O operations in a separate thread. If the only change you need to make to logging is to set the levels of various loggers, you can do so in application.properties by using the "logging.level" prefix, as shown in the following example: You can also set the location of a file to which to write the log (in addition to the console) by using "logging.file". Like many things in Spring Boot, Logback, by default, gets configured with sensible defaults. Asynchronous Logging with Log4J 2 - Spring Framework Guru logback.xmlmanages the Logback configuration. Therefore in the above example when the logs are rolled over they can take the name log_2.log and log_3.log (although starting for 2 is weird and only included for clarity, normally it would start from 1). When you run the main class now and access the application, log messages from IndexController and SpringLoggingHelper are logged to the console and the logs/spring-boot-logging.log file. AsyncAppender has five configuration options. spring Boot logback.xmllogback.xmlwindows 10logback.xml C\-Tomcat-9..37-50099 Spring Boot includes a number of extensions to Logback that can help with advanced configuration. Logging properties are independent of the actual logging infrastructure. As youve seen in this post, the Spring Boot team has provided a nice integration with Logback. If I have still done a bad job explaining this process to you then see the FixedWindowRollingPolicy docs which will hopefully get you there if I have failed. spring-boot-metrics-demo/logback.xml at master vicsz/spring-boot All the supported logging systems can have the logger levels set in the Spring Environment (for example, in application.properties) by using logging.level.