Django channel visitor counter realtime - django

Question

I am trying to show visitor counter on realtime basis with django. like how many visitor are online at my webiste.
I written a websocket consumer but it alwasy give me 0 even if i open the site in multiple browser.
this is my django channel consume:
class VisitorConsumer(WebsocketConsumer):
user_count = 0
def connect(self):
self.room_name = 'visitors'
self.room_group_name = 'counter_%s' % self.room_name
# Join room group
async_to_sync(self.channel_layer.group_add)(
self.room_group_name,
self.channel_name
)
# Send message to room group
async_to_sync(self.channel_layer.group_send)(
self.room_group_name,
{
'type': 'send_visitor_count',
'count': self.user_count
}
)
self.accept()
def disconnect(self, close_code):
# Leave room group
async_to_sync(self.channel_layer.group_discard)(
self.room_group_name,
self.channel_name
)
# Receive message from room group
def send_visitor_count(self, event):
count = event['count']
# Send message to WebSocket
self.send(text_data=json.dumps({
'count': count
}))
adn this is the routing:
websocket_urlpatterns = [
re_path(r'ws/visitors/$', consumers.VisitorConsumer),
]
I am not getting why it's always firing 0.
Can anyone help to fix this?

Answer 1

I don't see where you are incrementing the user_count but even that may not work if you incremented it because the different instances of the consumer running in different workers won't have access to the same user_count variable. So you should store it in a cache like Redis or DB and don't forget to actually increment it