Introducing CNAME Flattening: RFC-Compliant CNAMEs at a Domain's Root
April 03, 2014
This post is about a new feature we've been quietly rolling out over the last few months. Last week we began enabling it for everyone by default. ...
The weird and wonderful world of DNS LOC records
April 01, 2014
A cornerstone of CloudFlare's infrastructure is our ability to serve DNS requests quickly and handle DNS attacks. To do both those things we wrote our own authoritative DNS server called RRDNS in Go. ...
CloudFlare DNS is simple, fast and flexible
January 30, 2014
Over the past few years, the CloudFlare blog has covered a great range of different topics, drilling down into the technology we use to both protect websites from attack, and optimise them so that they load faster for visitors....
Details Behind Today's Internet Hacks
August 27, 2013
At 1:19pm, a researcher noticed that the New York Times' website wasn't loading. We know the New York Times tech team, so we emailed to check in. Minutes later, the CTO of the NYT called us back. ...
The story of a little DNS easter egg
August 27, 2013
About a year ago, we realized that CloudFlare's current DNS infrastructure had some challenges. We were using PowerDNS, an open source DNS server that is popular with hosting providers. ...
MORE POSTS
March 07, 2013
Go London User Group
We've mentioned before that we're using Go internally for projects such as Railgun (and a new DNS server and SSL infrastructure amongst other things). ...
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February 22, 2013
Good Web Security News: Open DNS Resolvers Are Getting Closed
This has been a rough week in the security industry with big attacks and compromises reported at companies from Facebook to Apple. ...
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January 07, 2013
CloudFlare: Fastest Free DNS, Among Fastest DNS Period
CloudFlare runs one of the largest networks of DNS servers in the world. Over the last few months, we've invested in making our DNS as fast and responsive as possible. We were happy to see these efforts pay off in third-party DNS test results....
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October 30, 2012
Deep Inside a DNS Amplification DDoS Attack
A few weeks ago I wrote about DNS Amplification Attacks. These attacks are some of the largest, as measured by the number of Gigabits per second (Gbps), that we see directed toward our network....
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August 01, 2012
CloudFlare (aka. KickassDNS)
One of the things we don't talk about much at CloudFlare is how we've built one of the largest, fastest, easiest, and most resilient authoritative DNS networks in the world. ...
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February 24, 2012
Post Mortem: The Ugly, the Bad & the Good
Last night was not our finest hour. Around 07:30 GMT, we were finishing up a push of a new DNS infrastructure. The core of what this new update was built to do is make DNS updates even faster. ...
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February 20, 2012
Introducing Page Rules: Fine Grained Control over CloudFlare's Features
CloudFlare is provisioned by DNS. That means that, from the beginning, you've been able to turn CloudFlare on or off on a subdomain level. From the CloudFlare DNS Manager. Often, however, users have wanted finer-grained control. ...
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November 08, 2011
Wow, That's Fast! Instant DNS Updates and More...
At CloudFlare, we're constantly trying to make things faster. To give you a sense, at our current scale, for every 1 millisecond (1/1000th of a second) we remove from requests through our network, we save a lifetime (70 years) worth of time every year....
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October 21, 2011
A Brief Primer on Anycast
I wrote a blog post the other day about CloudFlare's globally distributed DNS infrastructure and how each ninja name server we give you when you signup doesn't represent just one machine, but instead a whole cluster of machines in each of the data centers we operate worldwide. ...
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October 17, 2011
Robust, Free DNS FTW
Most people don't think DNS is very sexy, but it's critically important to the functioning of the Internet. At its core, the purpose of DNS is to turn a domain that humans can read (example.com) into an IP address that computers can read (192.0.43.10)....
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August 20, 2011
EveryDNS Magic Data Liberation Bookmarklet
At CloudFlare, we believe in giving control back to website owners. This includes the idea that our users' data is theirs. One of the first functions we built was the ability for CloudFlare users to export their DNS files as an industry-standard BIND file. ...
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June 05, 2011
App a Day #4: Google Webmaster Tools
Google Webmaster Tools collects several utilities that make a site owner's life better. See how visible your site is to crawlers, see links to your site, provide sitemaps, and more....
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