Speaker
Description
There's been a lot of focus on the performance of the root DNS servers in the recent past. In this talk, we'll go one layer below the root and look at the performance of the authoritative nameservers of the TLDs. We argue that the performance at this level has a higher impact on the end-user experience.
The way TLD operators have setup their authoritative nameservers is highly diverse, and this is reflected in the latency we observe when querying these servers. In this talk we'll take a look at the performance as seen through our global network from which we query the TLD authoritative nameservers billions of times per day.
At a high level, we see that many TLDs offer excellent performance, in the single digit millisecond range. Others are less stellar with median latencies around a hundred milliseconds, 50 to 100 times slower than what we see from the fastest TLDs.
While we might assume that having more nameservers and more IP addresses associated with a TLD is better. We show that this is not necessarily the case, with the best performing TLDs having as few as 3 IPv4/IPv6 addresses.
We conclude with some recommendations for both people looking to select a new TLD for their new domain, as well as for TLD operators.
Summary
A look at authoritative nameserver performance of TLDs
| Talk duration | 20 Minutes (+5 for Q&A) |
|---|
