Tagged uptime

Time-weighted uptime of a target over a window from its checks, with gaps longer than a limit counted as unknown.

One bar per UTC day for a status page's uptime history: seconds in each state, uptime and a colour state, oldest first.

A number of seconds as a short human duration for dashboards and alerts: "3h 12m", "2d 4h", "45s".

Classify one HTTP probe as up, degraded or down, with a reason and message, from status, body and latency.

Turn a series of up, degraded and down checks into incidents, ignoring runs too short to confirm.