title: Only do work on the first page load, not when the user comes via back/foward
body: <p>I want to do some work when the user first lands on my page (via a link or directly entering the URL). However, if the user goes off somewhere else and comes back to my page via back/forward buttons, I don't want to do the work again.</p>
  
  <p>What's the best way to achieve this?</p>
  
  <p>Note: The work should be done if the user hits the refresh button, forcing a page reload.</p>