title: Add MDC in Nodejs with log4j without requiring external libraries
body: <p>I am facing an issue in nodejs where I have to print the username in the logs in the Metadata.  Each request is having its own username and nodejs being async its overriding the username property that i have created for the singleton log.</p>
  
  <p>I have read about continous-local-storage, but I am looking for a simpler solution without requiring any external libraries.</p>
  
  <p>Is it advisable to create a seperate log instance per each request?</p>
  
  <p>P.S.: I am very new to Node js!!</p>