Stop false uptime alerts from Cloudflare and other CDNs
CDNs can return HTTP 200 even when your origin is down. Most monitors will happily call that “up”.
StatusPage.me helps you detect real outages with multi-region checks, response validation, and clear incident updates.
Uptime monitoring lies when a CDN sits in front
If your monitor checks a URL that is served by a CDN edge, it might never hit your origin. When the origin fails, the CDN can still serve cached pages or friendly error pages with a 200 status. Your monitor says “up” while customers see “down”.
HTTP 200, but broken
Edge returns 200 for a cached page while API/origin is failing. Your users cannot login, but your monitor stays green.
Friendly CDN error pages
Some CDNs return branded error pages, sometimes with success codes. A naive “status code only” check will miss it.
Regional failures
One region cannot reach your origin, another can. Single-probe monitoring cannot reflect real-world impact.
Accurate checks plus fast incident communication
The win is simple: validate the response, not just the status code, and monitor from the regions your users actually use. When something breaks, publish an incident and keep customers informed.
How to avoid CDN false positives
You do not need a PhD in cache headers. You need one reliable “truth” endpoint and a check that verifies the response.
1) Expose a non-cached health endpoint
Create a simple endpoint (example: /healthz) that returns a small response and is explicitly not cached by your CDN.
Cache-Control: no-store.2) Validate the response body
Do not trust status codes alone. Check for a known string or pattern so a CDN error page cannot pretend everything is fine.
OK or a JSON key like "status":"ok".3) Monitor from the right regions
If your users are in the US and EU, monitor from the US and EU. Regional routing, DNS, and peering can fail in weird ways.
4) Communicate fast when it breaks
Even with perfect monitoring, failures happen. A clean status page and consistent incident updates reduce tickets and panic.
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Clear answers about CDNs, response validation, incidents, and status pages.
/healthz) and validate the response body. That gives you a reliable “truth” signal that the CDN cannot fake.Get alerted for real outages, not CDN illusions
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