Uptime, MTBF & MTTR

Oack computes three reliability metrics from monitor status change history:

• Uptime % — percentage of time the monitor was in the UP state within the selected window.
• MTBF — Mean Time Between Failures. Average duration between consecutive DOWN incidents.
• MTTR — Mean Time To Recovery. Average duration of DOWN incidents before recovery.

Metrics are available over 7-day, 30-day, 90-day, and 365-day windows.