Hardcoding Heroku’s database address can break your app
Heroku can change the _URL during some work. _URL is the address an app uses to connect to its . If that value is written directly into the code, the app may keep using the old address after Heroku changes it.
The server and may look broken, but the real problem is that the app is not reading the current setting. _URL should be loaded from an , not fixed inside the code.
Key points
- Heroku may replace _URL during .
- _URL values can make an app use an outdated address.
- The failure may look like a platform outage, but the app setup is the cause.
- Connection details and secrets should be read from an .