title: Use of 'grails.logging.jul.usebridge' in grails config.groovy
body: <p>I am a newbie for <code>log4j and sl4j</code>, I am using grails 2.0.4 and in config.groovy there is a line </p>
  
  <p><code>grails.logging.jul.usebridge = false</code> for prod </p>
  
  <p>&amp;</p>
  
  <p><code>grails.logging.jul.usebridge = true</code> for dev</p>
  
  <p>I followed this <a href="http://sambro.is-super-awesome.com/tag/log4j/" rel="noreferrer">article</a>, As it says that use of grails.logging.jul.usebridge is to implement the swapping logic of logging frameworks such as </p>
  
  <ul>
  <li>log4j</li>
  <li>java.util.logging</li>
  <li>commons logging</li>
  <li>logback</li>
  </ul>
  
  <p>Is this the only use of grails.logging.jul.usebridge in config.groovy, or is there any other uses 
  And one more question </p>
  
  <p>1) which is the recommended logging framework to use in production environment </p>