title: Removing Cache Busting in Rails Production
body: <p>When i deploy a rails application in production mode, it appends a date-time string as a query param to the end of all the static asset urls. This is to prevent browsers using old-out of date cahed copies of the assets after I redeploy the application. </p>
  
  <p>Is there a way to make rails use the old time stamps for the assets that have not changed (and <strong>only</strong> the ones that have not changed) since the last deployment. I want to do this to prevent users having to redownload those assets that have not changed.</p>