Add a few cache headers and minor feed caching back in

Now that we aren't using the middleware, add cache headers on our
primary pages so we can prevent some repeat traffic, and cache all feeds
for five minutes.

Signed-off-by: Dan McGee <dan@archlinux.org>

public/views.py

@@ -1,6 +1,7 @@
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.http import Http404
+from django.views.decorators.cache import cache_control
 from django.views.generic import list_detail
 from django.views.generic.simple import direct_to_template
 
@@ -10,6 +11,7 @@
 from news.models import News
 from .utils import get_recent_updates
 
+@cache_control(max_age=300)
 def index(request):
     pkgs = get_recent_updates()
     context = {
@@ -33,6 +35,7 @@ def index(request):
     },
 }
 
+@cache_control(max_age=300)
 def userlist(request, user_type='devs'):
     users = User.objects.order_by(
             'first_name', 'last_name').select_related('userprofile')
@@ -50,12 +53,14 @@ def userlist(request, user_type='devs'):
     context['users'] = users
     return direct_to_template(request, 'public/userlist.html', context)
 
+@cache_control(max_age=300)
 def donate(request):
     context = {
         'donors': Donor.objects.filter(visible=True).order_by('name'),
     }
     return direct_to_template(request, 'public/donate.html', context)
 
+@cache_control(max_age=300)
 def download(request):
     qset = MirrorUrl.objects.select_related('mirror', 'protocol').filter(
             protocol__is_download=True,
@@ -71,6 +76,7 @@ def download(request):
             template_object_name="mirror_url",
             extra_context=context)
 
+@cache_control(max_age=300)
 def feeds(request):
     context = {
         'arches': Arch.objects.all(),
@@ -78,6 +84,7 @@ def feeds(request):
     }
     return direct_to_template(request, 'public/feeds.html', context)
 
+@cache_control(max_age=300)
 def keys(request):
     context = {
         'keys': MasterKey.objects.select_related('owner', 'revoker',

urls.py

@@ -27,12 +27,12 @@
 # Feeds patterns, used later
 feeds_patterns = patterns('',
     (r'^$',          'public.views.feeds', {}, 'feeds-list'),
-    (r'^news/$',     NewsFeed()),
-    (r'^packages/$', PackageFeed()),
+    (r'^news/$',     cache_page(300)(NewsFeed())),
+    (r'^packages/$', cache_page(300)(PackageFeed())),
     (r'^packages/(?P<arch>[A-z0-9]+)/$',
-        PackageFeed()),
+        cache_page(300)(PackageFeed())),
     (r'^packages/(?P<arch>[A-z0-9]+)/(?P<repo>[A-z0-9\-]+)/$',
-        PackageFeed()),
+        cache_page(300)(PackageFeed())),
 )
 
 # Sitemaps