Heroku Development Tutorials, Guides & Insights

• SQLAlchemy (especially when using the psycopg2 driver for PostgreSQL) requires the URI to be in the format postgresql+psycopg2://.
• This prefix specifies the dialect (postgresql) and the driver (psycopg2) explicitly, which SQLAlchemy uses to establish the connection.

Heroku's DATABASE_URL uses the older postgres:// scheme, which isn't compatible with the latest SQLAlchemy requirements. Starting with SQLAlchemy 1.4, postgres:// is considered deprecated and no longer supported. The explicit postgresql+psycopg2:// scheme is required.

This command will display all the tables in the current schema.

When you're done, exit the psql interface by typing:

   heroku apps

This will display a list of all the Heroku apps associated with your account.

AWS is one of the most comprehensive cloud computing platforms available. It offers a vast array of services, including compute power (EC2), storage (S3), databases (RDS), machine learning, networking, and much more. AWS provides a range of solutions from Infrastructure-as-a-Service (IaaS) to Platform-as-a-Service (PaaS) and even Software-as-a-Service (SaaS), making it highly suitable for enterprises that need robust and scalable infrastructure.

AWS is known for its flexibility and breadth of services but can be complex to configure due to its enterprise-level features. It is perfect for large-scale applications that require advanced features like auto-scaling, load balancing, and security configurations across multiple regions.

heroku ps

List dynos for an app and their current status.