gistfile1.txt

> grep Overcast /var/www/feeds.rebuild.fm/logs/access_log | awk '{print $9}' | sort | uniq -c
  12022 200

> curl -I http://feeds.rebuild.fm/rebuildfm                                              
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Mon, 08 Dec 2014 19:05:14 GMT
Content-Type: application/rss+xml; charset=utf-8
Content-Length: 337859
Last-Modified: Sun, 07 Dec 2014 22:52:54 GMT
Connection: keep-alive
Accept-Ranges: bytes

> curl -I -H "If-Modified-Since: Sun, 07 Dec 2014 22:52:54 GMT" http://feeds.rebuild.fm/rebuildfm
HTTP/1.1 304 Not Modified
Server: nginx/1.1.19
Date: Mon, 08 Dec 2014 19:05:19 GMT
Last-Modified: Sun, 07 Dec 2014 22:52:54 GMT
Connection: keep-alive