title: How to configure different logback levels to different appenders?
body: <p>How can I configure something like this:</p>
  
  <pre><code>&lt;configuration&gt;
      &lt;!-- file and file-debug appenders definitions using RollingFileAppender --&gt;
  
      &lt;root level="warn"&gt;
          &lt;appender-ref ref="file" /&gt;
          &lt;appender-ref level=debug ref="file-debug" /&gt;
      &lt;/root&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>I know this example is invalid, but it is just to show what I want to achieve. <strong>I need to save the debug output into another appender</strong>.</p>