Now Shipping: Improved DNS for Faster Lookup Times
April 16, 2015 | Adam OssowskiOver the past several months, we’ve been making changes to our DNS infrastructure and providers to improve the overall speed of our network. Because our customers’ domains do tens of billions of requests per month for ads, widgets, games and more, this upgrade affects the whole spectrum of content on a global scale. In addition to launching new PoPs in high-traffic areas like Israel, Paris (just went live today) and Brazil (upcoming), upgrading DNS is yet another way we’re helping customers improve the content experience they provide to users. time to first byte for requests is faster. This is because DNS lookups are now performed closer to the CDN servers that ultimately deliver the content being requested.
A Visualization of ImprovementsAcross the United States and Europe, users are experiencing faster DNS lookup times due to the upgrade. Anywhere from 10 to 30 percent faster. However, where the most dramatic speed increases are occurring is outside the U.S. and Europe - in locations we refer to as “flex locations” or simply “more locations.” By using a distributed synthetic monitoring system, we benchmarked the new DNS against our legacy system. We initiated 10 days of GET requests on an identical asset hosted on both configurations, from 12 tier-1 data centers located near our flex locations. 10,000 test runs later the results came in: The most dramatic improvements in DNS lookup times were in Hong Kong and Singapore, both averaging around 60 percent lookup time decrease. Percent change for DNS lookup times:
- Hong Kong - 61.8%
- Singapore - 58.71%
- Sydney - 57.26%
- Tokyo - 38.37%