added memcached middleware

utils/MemcachedMiddleware.py

@@ -0,0 +1,21 @@
+# -*- mode: python; coding: utf-8; -*-
+# http://bretthoerner.com/blog/2008/oct/27/using-nginx-memcached-module-django/
+
+from django.conf import settings
+
+KEY = getattr(settings, 'NGINX_CACHE_PREFIX', 'NG')
+
+class NginxMemcacheMiddleWare:
+    def process_response(self, request, response):
+        path = request.get_full_path()
+
+        if request.method != "GET" \
+           or (path.startswith('/admin') and not request.user.is_anonymous()) \
+           or response.status_code != 200:
+            return response
+
+        # settings.NGINX_CACHE_PREFIX == 'NG', just like nginx.conf
+        key = "%s:%s" % (KEY, path)
+        cache.set(key, response.content)
+
+        return response