I have a web application written in Python-Flask with database created using MySQL. I have deployed my app using Heroku but it's only the frontend and backend part. I also need to upload database so that the app can interact with the database. I have searched many videos on YouTube but nothing came as useful. Most of them are using Postgre SQL both in local and heroku app but I've an MySQL database with me. I need help how can I connect my app to my database.
Heroku has native support for postgessql not mysql, so you might want to change to that or use the Clear DB addon as explained in the docs.
From heroku
"Heroku provides three managed data services to all customers:
Heroku Postgres, Heroku Redis, Apache Kafka on Heroku"
Also have a look at this previous answer that targets the same issue.
Related
I want to deploy an application with sqlite3 as the database on Heroku. However, it seems to be that Heroku doesn't support applications with sqlite3 as the database. Is it true? Is there no way to deploy my sqlite3-backed application on Heroku?
PS: I have successfully deployed my application using PythonAnywhere, but would now like to know whether there's any possible way to deploy it using Heroku.
As Heroku's dynos don't have a filesystem that persists across deploys, a file-based database like SQLite3 isn't going to be suitable. It's a great DB for development/quick prototypes, though.
Heroku do have a Postgres offering however that will suit - with a free tier and a basic $9/month tier that are good for hobby/small projects. The biggest benefit over SQLite is that you get backups that you wouldn't get otherwise (plus all the other Postgres features).
There's a guide to updating your settings.py to use Postgres here: https://devcenter.heroku.com/articles/getting-started-with-django#django-settings
Heroku has a detailed article explaining "Why is SQLite a bad fit for running on Heroku" https://devcenter.heroku.com/articles/sqlite3
I am trying to build a full-stack web application using Python and Heroku.
There are two apps and they are connected using a common database (Heroku Postgres). The backend app streams live tweets from twitter and stores them in a database. In the frontend plotly-dash app, users can give an input query and the sentiments of the query are displayed in real-time. The app is perfectly running on my local server. But when I try to deploy it in Heroku, I am finding difficulty in deploying the two apps.
Am I supposed to deploy the apps separately using two applications? If so, how can I connect to the common database?
Am I supposed to deploy the apps separately using two applications?
Yes.
Heroku is designed to deploy one service at a time. One application per application.
If so, how can I connect to the common database?
Create one application with a Heroku Postgres addon, then add a second application to the existing database:
heroku addons:attach <heroku-addon-name> -a <app-name>
I'm starting a new project using Django and hosting it on Heroku. I know that Django comes with a SQLite db ready to use for the application to store all of the app's data.
Heroku requires PostgreSQL - does this mean that my app will have to be configured locally to use this database INSTEAD OF the SQLite db - or does it use both? Is the PostgreSQL db just something that the Heroku app needs to work or do you actually need this to run your Django app in Heroku?
Thanks!
Found answer on https://devcenter.heroku.com/articles/sqlite3. Heroku uses/prefers postgres and not sqlite.
I have deployed a reasonably simple flask app as an Azure Web App. I have opted to have the deployment of updates controlled by a Github branch.
As the app requires little data management, I have used a sqlite database.
I have updated the database since the original deployment and so need to complete a flask db migrate on the SQLite database.
Can I perform a sqlite database update on Azure and if so how?
I have tried logging into the ssh shell for the web app via the Azure portal, moving to the wwwroot directory and trying to do a flask db update, but flask-migrate is not installed so flask db is not recognised (even though it is in the requirements.txt file)
I want to deploy an application with sqlite3 as the database on Heroku. However, it seems to be that Heroku doesn't support applications with sqlite3 as the database. Is it true? Is there no way to deploy my sqlite3-backed application on Heroku?
PS: I have successfully deployed my application using PythonAnywhere, but would now like to know whether there's any possible way to deploy it using Heroku.
As Heroku's dynos don't have a filesystem that persists across deploys, a file-based database like SQLite3 isn't going to be suitable. It's a great DB for development/quick prototypes, though.
Heroku do have a Postgres offering however that will suit - with a free tier and a basic $9/month tier that are good for hobby/small projects. The biggest benefit over SQLite is that you get backups that you wouldn't get otherwise (plus all the other Postgres features).
There's a guide to updating your settings.py to use Postgres here: https://devcenter.heroku.com/articles/getting-started-with-django#django-settings
Heroku has a detailed article explaining "Why is SQLite a bad fit for running on Heroku" https://devcenter.heroku.com/articles/sqlite3