What Is Uptime Monitoring?
Published: June 19, 2026 • Authored by Adithyadev
Uptime monitoring is the continuous verification process of a service's availability, accessibility, and operational status over a specific period.
By testing network sockets, checking HTTP status codes, and validating response integrity, uptime monitoring systems automatically compute the exact operational percentage (e.g. 99.9%) and log downtime incidents when a failure signature is detected.
Computing Uptime Percentages
Uptime percentages are calculated using the total operational minutes versus the recorded downtime minutes within a billing or tracking cycle.
// UPTIME CALCULATOR FORMULA
Uptime % = ((Total Minutes - Downtime Minutes) / Total Minutes) * 100
Example: A server offline for 43 minutes in a 30-day month (43,200 total minutes):
Uptime % = ((43,200 - 43) / 43,200) * 100 = 99.9% availability
Incident Trigger Thresholds
To prevent false positives caused by isolated network hiccups, Stely uses dynamic threshold checks:
- Retry Loop: If a query fails, the node attempts validation again after 5 seconds.
- Multi-Region Check: If the primary node fails, adjacent edge servers verify the socket status.
- Incident Logging: If all check iterations fail across 3 consecutive intervals, a downtime incident is opened.
- Webhook Broadcast: The platform dispatches live notification cards to Discord channels to alert operators.
Frequently Asked Questions
What does a 99.9% Uptime SLA mean?
A 99.9% availability threshold allows a maximum of 43 minutes and 49 seconds of downtime per month before violating the SLA guarantee.
How does Stely monitor uptime without impacting performance?
Stely monitors are extremely lightweight, sending minimal, highly optimized query packets that simulate client connections, leaving server CPU resources completely untouched.