description Azure Traffic Manager Overview
While primarily a traffic management tool, its monitoring aspect is critical for high availability. It monitors the health endpoints of your backend services across different geographic regions. By monitoring endpoint health, it automatically routes traffic away from failing regions, providing a layer of resilience monitoring above the application layer.
help Azure Traffic Manager FAQ
How does Azure Traffic Manager detect a failed endpoint?
Azure Traffic Manager sends health checks to configured endpoints and evaluates their responses. If an endpoint fails its health test, the service can stop directing new traffic to that location.
Can Azure Traffic Manager route users between regions?
Yes. It can direct DNS-based traffic among endpoints in different geographic regions using methods such as performance, priority, weighted, or geographic routing.
Does Azure Traffic Manager balance every individual connection?
No. It is a DNS-based traffic management service, so routing decisions happen through DNS responses rather than a per-request reverse proxy. DNS caching can affect how quickly users move away from a failed endpoint.
What happens when one backend region becomes unhealthy?
Traffic Manager can remove the unhealthy endpoint from eligible DNS responses and send new lookups toward healthy regions. The result depends on the profile's routing method and the health probe settings.
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