OpenFreeMap explores the Round Robin DNS concept, allowing users to distribute the load dynamically to multiple servers without the need for costly Load Balancing solutions. The author delves into the intricacies of how browsers and CDNs select servers, revealing surprising outcomes. Users can witness browsers choosing servers based on unique criteria, sometimes failing to select the closest server. Safari consistently picks the nearest server, with Curl also performing well. Cloudflare, on the other hand, may have technical issues, as it fails to detect offline servers, serving them as online. The author questions Cloudflare’s functionality, suggesting improvements for better server selection.
https://blog.hyperknot.com/p/understanding-round-robin-dns