如何使用最新凭据从外部应用程序访问 Heroku Postgres DB？

Question

I am building an ETL Application that needs to fetch data from Heroku Postgres DB a few times a day but the application is not running on Heroku, I am already able to do this, but using the current credentials, but heroku states that the credentials are not permanent and will be rotated from time to time.

What is the best way to do this, building a REST API on top of my app is not viable an option. I have seen that Heroku provides a config vars API which I could potentially use to fetch the DB credentials, but is there a simpler/cleaner way for implementing this, is enforcing permanent credentials an option?

Answer 1

There is no way to enforce it. And it's not a question of credentials, but a question of a database hostname. It's ec2.

Your safest bet is to always fetch current DATABASE_URL from your Heroku app. If you only need to do it 'a few times a day' this is not a problem.