Change effective on 08 July 2016
To help users more easily monitor application health we’ve introduced a new threshold alerting beta feature. This feature allows users to specify tolerances for p95 response time and/or failed request percentage for web dynos, along with sensitivity, the duration an error state must occur (1 minute, 5 minutes or 10 minutes) before an alert is triggered.
Notifications appear in the dashboard and/or via email as specified. More details on this feature are available in Dev Center. Stay tuned for upcoming support for a more refined email distribution and PagerDuty.