Uptime represents the duration during which an application is operational and accessible to users. For example, if a web application has an uptime of 99.9%, it means that it is available and functioning for 99.9% of the time, with only minimal downtime.
In practical terms, uptime is often used to calculate service level agreements (SLAs) and to assess the overall performance of a system. It is commonly monitored and tracked using monitoring solutions. Developers strive to maximize uptime by implementing redundancy failover mechanisms, and observability to quickly identify and address any potential issues that could lead to downtime.
Explore related concepts
Availability
Availability is the measure of how consistently an application is operational and accessible to users without interruptions or downtime.
Error Rate
The error rate is the frequency at which errors occur in an application. It is a critical metric for understanding the overall health and performance of an app, as it directly impacts user experience.
Metrics
Metrics are a way to measure and track the performance and behavior of a system, application, or service. They provide valuable data on things like response time, error rates, and resource utilization.