Could you please elaborate on why there are only 13 root servers available globally? Isn't this a limitation considering the vastness of the internet and the increasing demand for domain name resolution? Is there a specific reason behind this number, or is it merely a historical artifact? Moreover, how do these servers manage to handle the massive load of DNS queries from all over the world without experiencing downtime or latency issues? I'm genuinely curious about the underlying mechanisms and rationale behind this seemingly arbitrary number.
5 answers
Martina
Mon Aug 19 2024
The decision to limit the number of root servers to thirteen addresses was not arbitrary but based on a combination of factors. One of the primary constraints was the inherent limitations in the Domain Name System (DNS) and certain protocols.
GeishaCharm
Sun Aug 18 2024
Specifically, the practical size of unfragmented User Datagram Protocol (UDP) packets played a significant role in this decision. UDP packets, being connectionless and stateless, have a maximum size limit that can be transmitted without fragmentation.
Sara
Sun Aug 18 2024
Fragmentation, while possible, can introduce delays and increase the complexity of managing DNS queries. Therefore, maintaining smaller packet sizes ensures efficient and reliable DNS resolution.
Ilaria
Sun Aug 18 2024
Recognizing these limitations, the decision was made to restrict the number of root server addresses to thirteen. This number was chosen as a balance between scalability, efficiency, and resilience.
CryptoDynasty
Sun Aug 18 2024
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