@cache_condition, @cache_last_modified, @cache_etag

gistfile1.py

# decorators to leverage cache based on conditional view processing.
# cache_condition decorator based on django.views.decorators.http.condition
# cache_last_modified, cache_etag shortcuts.

# settings.py
# -----------

# you may or may not want this.
# CACHE_MIDDLEWARE_ANONYMOUS_ONLY = True

MIDDLEWARE_CLASSES = (
   'django.middleware.cache.UpdateCacheMiddleware', # top one.
   ...
)


# decorators.py
# -------------

from django.views.decorators.http import condition
from django.utils.cache import get_cache_key
from django.core.cache import cache

def cache_condition(*args, **kwargs):
   def decorator(func):
      def inner(request, *args, **kwargs):
         cache_key = get_cache_key(request, method=request.method)
         response = cache.get(cache_key)
         if response is not None:
            return response
         # do not use FetchFromCacheMiddleware, behave the same
         request._cache_update_cache = True
         return func(request, *args, **kwargs)
      return condition(*args, **kwargs)(inner)
   return decorator

def cache_etag(etag_func):
    return cache_condition(etag_func=etag_func)

def cache_last_modified(last_modified_func):
    return cache_condition(last_modified_func=last_modified_func)



# views.py
# --------

# e.g.
#
# def latest_entry(request, blog_id):
#    return Entry.objects.filter(blog=blog_id).latest("published").published
#
# seealso:
#    https://docs.djangoproject.com/en/1.3/topics/conditional-view-processing/

@cache_last_modified(latest_entry)
def front_page(request, blog_id):
   ...