liblogback-java - 1:1.2.11-3 main

Logback is a reliable, generic, fast and flexible logging library for Java.
It's intended as a successor to the popular log4j project.
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The logback-core module lays the groundwork for the other two modules.
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The logback-classic module can be assimilated to a significantly improved
version of log4j. Moreover, logback-classic natively implements the SLF4J API
so that you can readily switch back and forth between logback and other
logging systems such as log4j or java.util.logging (JUL).
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The logback-access module integrates with Servlet containers, such as Tomcat
and Jetty, to provide HTTP-access log functionality.