title: Do we need Etag and Last-Modified header when using CommonsChunkPlugin in webpack
body: <p>I am using webpack to bundle all my assets files so I get something like this.</p>
  
  <pre><code>bundle.7fb44c37b0db67437e35.js
  vendor.495e9142a1f8334dcc8c.js
  styles.bc5b7548c97362b683f5582818914909.css
  </code></pre>
  
  <p>I use chunkhash in the name so when browser caches something it doesnt cache again until hash has changed. For example if I change something in styles, bundle the files and deploy, only the hash from styles will change, others wont so browser will request from the server again just the styles file and the rest will use from memory cache.</p>
  
  <p>In response header I also have <strong>Etag</strong> and <strong>Last-Modified</strong> and they change every time I deploy app for every file. Should I remove them from response? Can that confuse the browser to contact the server and see if files have changed even though hash is still the same?</p>