title: Java logging annotations
body: <p>I am looking for an annotation library that will help me in debugging e.g. production performance issues. </p>
  
  <p>The other day I was seeing timeout error logs from service A, who was calling service B. That is service B was taking too long to respond even though it did the job eventually.</p>
  
  <p>What I ended up doing was sprinkling all the involved methods in service B with log statements so that I could see where we got stuck, and redeployed the service.</p>
  
  <p>It would have nice if there was an annotation on method level, or preferably on class level that I could apply on the relevant classes, that in it's simpledst form would log e.g. "method entererd" and "method exited".</p>
  
  <p>I am using sl4j, and logback.</p>