title: Node.JS V8 heap growing quickly even though usage remains the same
body: <p>I'm running a Node.JS web application that works fine for a few hours and then at some random point in time, the V8 heap suddenly starts growing very quickly without a reason and about 40 minutes later, this growth usually stops and the process continues running normally.</p>
  
  <p>I'm monitoring this with nodetime:</p>
  
  <p><img src="https://i.imgur.com/SD4LgqL.png" /></p>
  
  <p><img src="https://i.imgur.com/ml7waCz.png" /></p>
  
  <p>What could be the cause of this? Is it a memory leak in my program or perhaps a bug in V8?</p>