Popular Traffic Routing Articles

Running an application in multiple regions can reduce latency, increase geographic resilience, and protect against regional infrastructure failures. The difficult part is deciding which region should receive each request and what should happen when that region becomes unavailable .

Deploying a new application version without downtime requires more than starting new instances. Production traffic must move from the old version to the new version without routing requests to unready instances, interrupting in-flight work, or exposing an unhealthy release to every client .

A load balancer needs more than a list of healthy servers. For every incoming request or connection, it must decide which backend should receive the traffic . That decision is controlled by the load-balancing algorithm.