Multi-Region Monitoring
Your site works here. Does it work everywhere?
Your site can work perfectly where you are and be broken on the other side of the world. A visitor in Frankfurt gets an old, broken version from the nearest server. Checkout redirects in a loop for everyone in Asia. Traffic from São Paulo lands on a server that no longer exists — while your single-location monitor in Virginia reports everything as fine. Sitewatch checks from multiple regions, so a failure that only hits one part of the world is visible instead of hidden.
- Catch a broken version served in one region while the rest of the world sees the site working
- Spot failures that only hit certain countries — invisible to a single-location check
- Find traffic sent to the wrong place, and redirect loops that only trigger in some regions
Regional divergence detected
Region-specific failures
- US-East — every file loaded correctly6:01 AM
- EU-West — /js/app.4f2a1c.js returned stale 4046:01 AM
- EU-West — main stylesheet arrived as the wrong file type6:01 AM
- APAC — every file loaded correctly6:02 AM
01Why multi-region
Single-location vs. multi-region monitoring
| Scenario | Single-location monitoring | Sitewatch multi-region |
|---|---|---|
| CDN edge failures | Invisible if your check hits a healthy edge | Detected by comparing results across regions |
| Geo-routing issues | Cannot detect regional DNS misrouting | Catches traffic routed to wrong origins per region |
| Cache purge failures | Reports success from one edge | Verifies purge propagated to all regions |
| Regional redirect loops | Not triggered from monitor location | Detected in affected regions |
| Failure context | "Site is down" — no regional detail | "EU-West failing, US-East and APAC healthy" |
| Post-deploy confidence | One location says deploy is live | All regions confirmed serving new version |
CDN edge failures
- Single-location monitoring:
- Invisible if your check hits a healthy edge
- Sitewatch multi-region:
- Detected by comparing results across regions
Geo-routing issues
- Single-location monitoring:
- Cannot detect regional DNS misrouting
- Sitewatch multi-region:
- Catches traffic routed to wrong origins per region
Cache purge failures
- Single-location monitoring:
- Reports success from one edge
- Sitewatch multi-region:
- Verifies purge propagated to all regions
Regional redirect loops
- Single-location monitoring:
- Not triggered from monitor location
- Sitewatch multi-region:
- Detected in affected regions
Failure context
- Single-location monitoring:
- "Site is down" — no regional detail
- Sitewatch multi-region:
- "EU-West failing, US-East and APAC healthy"
Post-deploy confidence
- Single-location monitoring:
- One location says deploy is live
- Sitewatch multi-region:
- All regions confirmed serving new version
02Beyond single-location checks
One location check gives you a false sense of security
CDN edge divergence detection
Your CDN has dozens of edge nodes. When one serves a stale deploy or broken asset, single-location monitoring sees the healthy edge and reports all clear. Multi-region checks expose the divergence.
Region-specific failure visibility
Geo-targeted redirects, region-locked content rules, and location-based routing can break for specific markets while working perfectly in others. You need checks where your users actually are.
Geo-routing misconfiguration alerts
DNS geo-routing can silently send traffic from entire regions to decommissioned origins, wrong data centers, or misconfigured backends. Multi-region monitoring catches routing failures that single-location checks cannot see.
Different users, different realities
Your European visitors get a different response than your US visitors. Different CDN edges, different cached versions, different TLS termination. One check location cannot tell you what all your users experience.
Stale cache detection across edges
After a deploy, some CDN edges purge correctly while others serve yesterday's broken bundle. The result: intermittent failures that depend on which edge a visitor hits. Multi-region checks catch the inconsistency.
Post-deploy regional verification
Your deploy succeeded in your CI pipeline. But did the CDN purge propagate to every edge? Multi-region checks verify that all locations serve the new version, not a mix of old and new assets.
03Regional failure detection
Regional failures your single-location monitor misses
CDN and cache divergence
- Stale assets served from specific CDN edges after a deploy
- Cache purge failures leaving old JavaScript or CSS on regional nodes
- A CDN serving files as the wrong type in some regions but not others
- Different asset versions across edges causing intermittent breakage
DNS and routing issues
- DNS geo-routing sending regional traffic to wrong or decommissioned origins
- Geo-targeted redirect rules creating loops for specific locations
- Regional failover misconfigurations routing users to unhealthy backends
- Anycast routing inconsistencies across geographic regions
Content delivery failures
- Region-locked or geo-fenced content returning 403 for certain locations
- Locale-specific pages returning wrong language or broken templates
- Regional compliance redirects breaking page functionality
- Edge-computed content returning errors for specific geographies
04Multi-region checks
How multi-region monitoring works
- 01
Check from multiple regions
Sitewatch fetches your pages from geographically distributed check locations. Each region runs the same full-page verification independently -- parsing HTML, extracting assets, and verifying delivery.
- 02
Compare results across regions
Results from each region are compared. When one region returns failures that others do not, Sitewatch flags it as a regional divergence rather than a global outage -- giving you precise, actionable information.
- 03
Confirm with per-region retries
Each regional failure is confirmed with 2-of-3 retry logic within that region. This eliminates transient network blips while catching persistent, location-specific failures.
- 04
Alert with regional context
Alerts include which regions are affected and which are healthy. You know immediately whether it is a global incident or an edge-specific failure, so you can target your response to the right CDN node or DNS config.
05What you get
Outcomes, not a feature list.
See the failure that only happens far from home.
A CDN can serve your site perfectly in one part of the world and serve a broken version somewhere else. Checking from a single location cannot see it. Sitewatch compares the full result between regions on every check.
Multi-region
Check locations
2-of-3
Retry confirmation per region
5–30 min
Check intervals
Stop assuming one check location tells the whole story
Your visitors are global. Your monitoring should be too. Free plan, no credit card required.
06FAQ
Frequently asked questions
Multi-region monitoring runs the same checks from multiple geographic locations and compares the results. It matters because CDNs, DNS geo-routing, and edge caching mean different visitors get different responses. A site can be fully functional in one region and broken in another. Single-location monitoring only tells you about one version of reality.
Sitewatch catches CDN edge divergence (stale or broken assets on specific edges), DNS geo-routing misconfigurations (traffic sent to wrong origins), region-specific redirect loops, cache purge failures that leave old assets on certain nodes, and content delivery issues like geo-fenced pages returning errors for specific locations.
Basic multi-location checks only confirm that a server answered from each place. Sitewatch goes further: it opens the whole page, verifies every file it needs, checks each one is the right kind of file, and compares the full result between regions. That catches the case where a page loads fine from one part of the world and serves a broken script from another — something a simple uptime check cannot see.
Each region uses independent 2-of-3 retry confirmation. If a check in EU-West fails, Sitewatch retries within that region before confirming the incident. A failure is only flagged when it is persistent and reproducible in that location, eliminating noise from transient network blips.
Yes. After deploying new assets and purging your CDN cache, trigger an on-demand check. Sitewatch will verify from multiple regions that each location serves the updated assets. If some edges still serve stale versions, you will see exactly which regions are lagging behind the purge.
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