outtakes.vcl

outtakes.vcl

sub vcl_recv {
  # ... some other stuff and logic.
  
  # This is so special I keep it in a separate if block.
  if (req.http.host == "orkjern.com") {
    # These first lines are based on lullabot's setup. Google it.
    set req.http.Cookie = ";" + req.http.Cookie;
    set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
    # This cookie gets set from javascript.
    if (req.http.Cookie ~ "ORKJERN_THEME_CACHE") {
      set req.http.Cookie = ";" + req.http.Cookie;
      set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
      set req.http.Cookie = regsuball(req.http.Cookie, ";(ORKJERN_THEME_CACHE=[0-9]*)", " \1=");
      set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", "");
      set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");
      # Now all of the visitors with the theme cache key will get the same 
      # URL (used as hash for caches). Something like xxx.com/node/1?has_cache=true&cookie=ORKJERN_THEME_CACHE123456
      set req.url = req.url + "?has_cache=true&cookie=" + req.http.Cookie;
    }
    else {
      # All visitors without the theme cache hook will also get the same hash.
      set req.url = req.url + "?has_no_cache=true&cookie=" + req.http.Cookie;
    }
    # No-one gets to use cookies on the site, resulting in no-one being able to log in.
    unset req.http.Cookie;
    # ... and so on with other logic.
  }
}

# Also this:
sub vcl_deliver {
  # Useful for debugging:
  set resp.http.X-URL = req.url;
  
  ## ... and then some other things.
}