anchor.diff:      } else {
         # Wildcard purging
         ban("req.url ~ "+req.url);
  +      std.log("purging: " +req.url);
         error 200 "Purged.";
       }
     }
  
positive.code: director frontend_app round-robin {
    { .backend = frontend_app_1; }
    { .backend = frontend_app_2; }
  }  
  
  sub redirect_slash {
    # http://example.org/foo/ -> http://example.org/foo
  
negative.code: # you're not sure what that is, see here:
  #
  #   https://www.varnish-cache.org/trac/browser/bin/varnishd/default.vcl?rev=3.0
  import std;
  
  acl purge_acl {
    "localhost";
  