title: How to clear the cache of nginx?
body: <p>I use nginx to as the front server, I have modified the CSS files, but nginx is still serving the old ones.</p>
  
  <p>I have tried to restart nginx, to no success and I have Googled, but not found a valid way to clear it.</p>
  
  <p>Some articles say we can just delete the cache directory: <code>var/cache/nginx</code>, but there is no such directory on my server.</p>
  
  <p>What should I do now?</p>