Django Rest Framework with nginx caching requests - django

Question

Since I started using DRF with nginx/gunicorn server I've noticed that queries are being cached somehow. I.e. I got 10 records of object A in database (Postrgres) - if I ask for them with GET, I got 10 - ok. But then, when I add another record, I got 10 instead of 11 (although I see 10 in database). I have to manually reset gunicorn to get the correct result, which is not how REST should work...
Here's my nginx config (tried some cache settings):
upstream myapp{
server unix:/var/django/gunicorn.socket fail_timeout=0;
}
server {
listen 80;
server_name myapp.example.com;
client_max_body_size 4G;
access_log /var/django/myapp/logs/nginx-access.log;
error_log /var/django/myapp/logs/nginx-error.log;
# DRF API below
location /api {
expires off;
add_header Cache-Control "private, no-cache, must-revalidate, max-age=0";
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_connect_timeout 75s;
proxy_read_timeout 300s;
proxy_pass http://myapp;
}
# JS for webapp (backbone)
location / {
alias /var/django/myapp_web/;
}
}
and gunicorn as well:
#!/bin/bash
NAME="myapp"
DJANGODIR=/var/django/myapp
SOCKFILE=/var/django/gunicorn.socket
USER=appuser
GROUP=appuser
NUM_WORKERS=5
DJANGO_SETTINGS_MODULE=myapp.settings
DJANGO_WSGI_MODULE=myapp.wsgi
TIMEOUT=300
echo "Starting $NAME as `whoami`"
cd $DJANGODIR
source /var/django/myapp/bin/activate
export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
export PYTHONPATH=$DJANGODIR:$PYTHONPATH
RUNDIR=$(dirname $SOCKFILE)
test -d $RUNDIR || mkdir -p $RUNDIR
exec /var/django/myapp_venv/bin/gunicorn ${DJANGO_WSGI_MODULE}:application \
--name $NAME \
--workers $NUM_WORKERS \
--reload \
--timeout $TIMEOUT \
--user=$USER --group=$GROUP \
--bind=unix:$SOCKFILE \
--log-level=debug \
--log-file=/var/django/myapp/logs/gunicorn-error.log
--access-logfile=/var/django/myapp/logs/gunicorn-access.log
EDIT
The viewset looks like nothing special:
class OrderViewSet(DefaultsMixin, viewsets.ModelViewSet):
serializer_class = OrderSerializer
queryset = Order.objects.all()
def get_queryset(self):
if self.request.GET:
filter_func = self.request.GET.get('filter', None)
allowed_filters = ['new', 'open', 'today', 'tomorrow', 'urgent', 'draft']
if filter_func and filter_func in allowed_filters:
if hasattr(self.queryset, filter_func):
self.queryset = getattr(self.queryset, filter_func)()
elif filter_func == 'draft':
self.queryset = Order.drafts.all()
if self.request.user.is_superuser:
return self.queryset
elif hasattr(self.request.user, 'driver'):
if self.request.user.is_staff:
return self.queryset
return self.queryset.for_driver(self.request.user.driver)
elif hasattr(self.request.user, 'employee'):
return self.queryset.for_employee(self.request.user.employee)
return self.queryset.filter(user = self.request.user)