leonardoce/minimal-app repository overview

⁠Minimal web app

This is a minimal web application, useful during demos & trainings to understand how environment variables work and how to expose a web application into the Internet.

If you find it useful, enjoy!

⁠Environment variables

• ENVIRONMENT contain the environment name that is simply shown in the root page of the application
• COLOR is used as the color of the text
• DATABASE_URL is the connection string to a PostgreSQL database
• QUERY is the SQL query used
• LISTEN_ADDRESS is the endpoint where we should listen for HTTP requests

⁠Endpoints

• / show a simple page with the desired color and environment
• /.well-known/check check if we can connect to PostgreSQL
• /tx execute the query in QUERY
• /metrics Prometheus metrics endpoint