title: What does it mean by cold cache and warm cache concept?
body: <p>I read a paper and it used terms <strong>cold cache</strong> and <strong>warm cache</strong>. I googled about this terms but I didn't find something useful (only a thread <a href="https://web.archive.org/web/20150420002300/http://help.lockergnome.com/linux/Cold-cache-warm-cache--ftopict414393.html" rel="noreferrer">here</a>). </p>
  
  <p>What do these terms mean? </p>