Java EE 8 High Performance

Logback

Logback is a native implementation of SLF4J and an advanced logging implementation. Here is its mapping with the concepts we talked about:

Concept	Name
Logger	Logger (from SLF4J)
Logger Factory	LoggerFactory (from SLF4J)
Handler	Appender
Filter	Filter
Formatter	Encoder/Layout
Level	Level

Note that logback also has the concept of Encoder to link the messages to byte[].

The configuration relies, by default, on a logback.xml file in the classpath, looking like this:

<configuration>  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">    <encoder>      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>    </encoder>  </appender>  <root level="debug">    <appender-ref ref="STDOUT" /> </root> ...