title: How to recognize business log from Spring application log and tag them in Logger.info()?
body: <p>I'm using Spring Boot and Logback to record my log. </p>
  
  <p>The requirement is that I want to recognize business log from Spring application log and tag them in Logger.info(). </p>
  
  <p>For example:</p>
  
  <p>In one of my Foo.service</p>
  
  <pre><code>LOGGER.info("this is my business log, I want to tag it")
  </code></pre>
  
  <p>I want to differentiate it from the application system log and the Middleware log. However, I can not figure out a method to judge the log is written by me(Business logic programmer) or the application system log.</p>