Django REST framework Postgresql Heroku : Operational Error - 'FATAL too many connections for role “usename”'
Tomiwa Ademidun
I am running a web application using Django and Django Rest Framework on Heroku with a postgresql and redis datastore. I am on the free postgresql tier which is limited to 20 connections.
This hasn't been an issue in the past, but recently I started using django channels 2.0 and the daphne server (switched my Procfile from gunicorn to daphne like this tutorial) and now I have been running into all sort of weird problems.
The most critical is that connections to the database are being left open so as the app runs, the number of connections keep increasing until it reaches 20 and gives me the following error message: Operational Error - 'FATAL too many connections for role "usename"'
Then I have to manually go to shell and type heroku pg:killall each time, this is obviously not a feasible solution and this is production so my users cant get access to site and get 500 errors. Would really appreciate any help.
I have tried:
Adding this to my different views in different places
from django.db import connections
conections.close_all()
for con in connections:
con.close()
I also tried doing SELECT * from pg_activity and saw a bunch of stuff but have no idea what to make of it:
