Zero False Positives. Trust every alert you receive.
What is it? A secondary global verification layer. If our primary engine detects a failure, a distributed Cloudflare Edge Worker re-checks the site from a different geographic location.
A basic monitor experiences a brief local network glitch on its own end and sends you a panic alert at 4 AM. You wake up, check the site, find it perfectly fine, and lose sleep over a false alarm.
Understanding the Technology
False positives are the bane of uptime monitoring. A false positive occurs when a monitoring tool incorrectly reports a website as 'down' due to localized network congestion, DNS resolution delays, or regional firewall blocks specific to the monitoring server's location. When engineers receive false alarms, their trust in the monitoring system erodes, inevitably leading to a situation where a real, critical outage is ignored.
To achieve absolute accuracy, PingStag employs a multi-location consensus algorithm powered by Cloudflare's Edge Network. If the core PingStag engine (Node A) fails to reach an endpoint, it does not immediately trigger a panic. Instead, it dispatches a rapid HTTP request to a serverless Cloudflare Worker (Node B) located in a completely different geographic region. Only if both nodes agree that the target endpoint is unreachable does PingStag classify the event as a confirmed outage. This Enterprise-grade Edge Verification guarantees that when your phone buzzes, it's a real emergency.