How to stop heroku dyno restart from reseting my database

Question

I have a flask app on heroku. Originally I had a free Dyno from heroku. When my website was inactive for 30 mins it would sleep, consequently reseting my database.

I then upgraded to a Hobby Dyno. This solved the issue of the dyno sleeping. Although it still has a daily restart causing my database to reset. Is there a way to stop this from happening?

Try to register the blueprints after, socketio = SocketIO(app, cors_allowed_origins='*') — Christoph, Jan 10 '21 at 20:31

score 1 · Accepted Answer · answered Jan 10 '21 at 23:15

1

Assuming you start the application with python main.py, then your main file should be referenced as __main__ according to Python import rules. So in your blueprint, when you import the socketio object you should do it like this:

from __main__ import socketio

answered Jan 10 '21 at 23:15

Miguel Grinberg

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It underlines the line with an error. And wants me to import a Package called mksbackup. – Constantine Westerink Jan 10 '21 at 23:20
Did you try it? I have no idea what mksbackup is, you have not discussed that in your quesiton. – Miguel Grinberg Jan 11 '21 at 11:08
I tried to install it but it said the installation failed. – Constantine Westerink Jan 12 '21 at 05:49
I did not ask you to install anything, so I don't understand what you are saying. – Miguel Grinberg Jan 12 '21 at 10:07
Yes i tried : from __main__ import socketio. It gave me an error – Constantine Westerink Jan 12 '21 at 22:36
line of code in chat.py: from __main__ import socketio |||| ImportError: cannot import name 'socketio' from '__main__' (/Users/path.../Sockets/main.py) – Constantine Westerink Jan 19 '21 at 07:11
Did you move the import to the top by any chance? You had it somewhere in the middle of the blueprint file, which helps avoid circular dependencies. If you move the import to the top you will have import issues. – Miguel Grinberg Jan 19 '21 at 15:05
I have added an image to my question. it Shows the error i receive when using: from __main__ import socketio – Constantine Westerink Jan 19 '21 at 18:45
You have to resolve the circular dependency. In main.py you are importing chat.py before `socketio` is defined, so then it is not possible to import `socketio` in chat.py because at the time this code runs `socketio` hasn't been created yet. – Miguel Grinberg Jan 20 '21 at 10:54
It still underlines the "from __ main __ import socketio" line but It works! Thank you so much ! – Constantine Westerink Jan 20 '21 at 18:08

How to stop heroku dyno restart from reseting my database

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