Uptime
Uptime is the percentage of time a service is available and responding correctly over a given period.
Uptime is the headline reliability metric for any website, API, or server. It is expressed as a percentage — for example 99.9%, which allows roughly 43 minutes of downtime per month. The remaining fraction is downtime.
Uptime is measured by repeatedly checking a service from one or more locations and recording whether each check succeeded. Because a single failed check can be a false alarm, robust monitoring confirms an outage from multiple locations before counting it against uptime.
Related terms
DowntimeDowntime is any period during which a service is unavailable or not responding correctly to its users.SLA (Service Level Agreement)A Service Level Agreement (SLA) is a contractual commitment to a level of service — most commonly a guaranteed uptime percentage — with consequences if it is missed.Uptime MonitoringUptime monitoring is the practice of automatically checking a service at regular intervals to detect outages and measure availability.IncidentAn incident is a recorded event representing a detected problem with a service, from the moment it is confirmed until it is resolved.
Start monitoring in minutes
EU-hosted uptime monitoring with multi-location confirmation that kills false alarms — white-label for agencies.