问题
I have deployed an app in Heroku using Django. The Django program uses a SQLite database db.sqlite3 on root directory to populate its page. Separately, there is also a Node.js scraper program that inserts to that database.
The problem is that the hard-refreshed webpage shows the same data even after the content of the database changed. Curiously, this does not happen when it is tested locally with python manage.py runserver. How can I fix this problem?
Thank you in advance!
For reference, here is my requirements.txt file:
Django==1.10.6
gunicorn==19.7.1
Pillow==4.0.0
selenium==3.3.1
whitenoise==3.3.0
回答1:
You cannot use sqlite on Heroku.
An sqlite db is stored as a file on the local filesystem. But in Heroku the filesystem is ephemeral and is not shared between dynos. Every time you redeploy your app, or scale your process, or in your case launch a worker, you get a new filesystem with a different copy of the db file.
Use the proper Postgres support via the add-ons.
来源：https://stackoverflow.com/questions/43379209/heroku-deployed-django-webpage-doesnt-update-when-db-changes