Mean Time To Recovery measures how long it takes to fix a bug or an outage, either through a rollback or another action.

There are also:

• Mean Time To Repair,
• Mean Time To Respond,
• Mean Time to Resolve.

Source: https://www.atlassian.com/incident-management/kpis/common-metrics

Note to myself: The metrics should be as low as possible. Having effective monitoring and alerting systems plus fast rollback mechanism is important.

Question to you: Do you know how to rollback your application?