Round Robin DNS allows multiple servers to be specified for a single subdomain, distributing load and providing failover without the need for Load Balancers. The post explores how various clients, including Chrome, Firefox, Safari, Curl, and Cloudflare, select servers in practice. While most clients accurately detect offline servers and default to the nearest server, Cloudflare sticks with the server chosen for the client IP even if it goes offline. Suggestions are made for improving Cloudflare's handling of offline servers and latency optimization.
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