Django middleware that allows to set up a global cache limit for all your requests.

cache_control.py

"""Control MAX age for all Django pages."""
from django.conf import settings
from django.utils.deprecation import MiddlewareMixin

class MaxAgeMiddleware(MiddlewareMixin):
  """Set up Cache-Control header for all Django-handled requests."""

  def process_response(self, request, response):
    """Adds Cache-Control header to response.

    Args:
      request: User HTTP request.
      response: Django HTTP response.

    Returns:
      response with Cache-Control set up to value in settings.
    """
    response['Cache-Control'] = 'max-age=%d' % settings.CACHE_CONTROL_MAX_AGE
    return response

settings.py

"""Your Django settings.py... Only adding to document variable set up."""

# Max cache age in seconds.
# Read more in: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
CACHE_CONTROL_MAX_AGE = 604800