remove etag and last modified caching and disable it in backend settings

coinmanager/coinc/cache.py

@@ -1,52 +0,0 @@
-# encoding: utf-8
-#
-# Copyright (C) 2020 willipink.eu
-# Author Moritz Münch moritzmuench@mailbox.org
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-
-from django.core.cache import cache
-from django.http import Http404
-
-from .models import Coin
-
-
-def get_last_modified_coin(request):
-    return cache.get('last_modified_coin', set_last_modified_coin())
-
-
-def set_last_modified_coin():
-    ''' set and return the datetime of the last coin added '''
-    try:
-        last_modified = Coin.objects.latest('date_modified').date_modified
-    except Coin.DoesNotExist:
-        raise Http404(f'Das Land existiert nicht')
-    cache.set('last_modified_coin', last_modified)
-    return last_modified
-
-
-def get_last_modified_country(request, name_iso):
-    return cache.get(f'last_modified_{name_iso}', set_last_modified_country(name_iso))
-
-
-def set_last_modified_country(name_iso):
-    ''' return the datetime of the last coin added to a country '''
-    try:
-        last_modified = Coin.objects.filter(country=name_iso).latest('date_modified').date_modified
-    except Coin.DoesNotExist:
-        raise Http404(f'Das Land "{name_iso}" existiert nicht')
-    cache.set(f'last_modified_{name_iso}', last_modified)
-    return last_modified

coinmanager/coinc/views.py

@@ -28,13 +28,10 @@ from django.template.defaultfilters import register
 from django.views.decorators.http import condition
 from django.utils.datastructures import MultiValueDictKeyError
 
-from .cache import (get_last_modified_coin,   set_last_modified_coin,
-                    get_last_modified_country, set_last_modified_country)
 from .models import Country, Stamp, Coin, User
 from .helper import total_coin_sum, coin_sum_of_
 
 
-@condition(last_modified_func=get_last_modified_coin)
 def index(request):
     ''' index view '''
 
@@ -55,7 +52,6 @@ def index(request):
     return HttpResponse(template.render(context, request))
 
 
-@condition(last_modified_func=get_last_modified_country)
 def detail_country(request, name_iso):
     ''' wrapper_view for a *single* country '''
 
@@ -370,8 +366,6 @@ def add_coin(request, country, year, value):
             in_collector = ec,
             exists       = exists)
 
-    set_last_modified_coin()
-    set_last_modified_country(country.name_iso)
     return response()
 
 

coinmanager/coinmanager/production_settings.py

@@ -48,7 +48,7 @@ MIDDLEWARE = [
     'django.middleware.common.CommonMiddleware',
 #     'django.middleware.cache.FetchFromCacheMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
-    'django.middleware.http.ConditionalGetMiddleware',
+#     'django.middleware.http.ConditionalGetMiddleware',        # set 'ETag' and 'Last Modified' headers
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',