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The story of a little DNS easter egg 27 Aug 2013 | 02:10 pm
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. We'd chosen Po...
Recycling memory buffers in Go 24 Aug 2013 | 03:46 pm
The other day I wrote about our use of Lua to implement our new Web Application Firewall. The other language that's become very popular at CloudFlare is Go. In the past, I've written about how we use ...
CloudFlare's new WAF: compiling to Lua 23 Aug 2013 | 07:31 pm
We use nginx throughout our network for front-line web serving, proxying and traffic filtering. In some cases, we've augmented the core C code of nginx with our own modules, but recently we've made a ...
Updating Our Privacy Policy 21 Aug 2013 | 07:00 am
Hi I’m Ken Carter, CloudFlare’s newly minted in-house counsel. Now that I have introduced myself, feel free to introduce yourself. Or, don’t. You may want to remain anonymous because you value your pr...
Heuristics and Rules: Why We Built a New Old WAF 19 Aug 2013 | 08:00 pm
We just rolled out an update to CloudFlare's Web Application Firewall (WAF). Previously, CloudFlare's WAF has received criticism from people who have tested it and found that it didn't behave as tradi...
CloudFlare and Free Speech 10 Aug 2013 | 01:00 am
At CloudFlare we believe in a free and open web. However, we regularly get questions about controversial content that flows through our network. Yesterday we we received the questions below from the a...
What's the story behind the names of CloudFlare's name servers? 7 Aug 2013 | 04:40 am
We're going to do a series of blog posts about some of the inner workings of CloudFlare. One of the questions we get often is what the names of our name servers mean. Here's the story. Two Names Ente...
DDoS Prevention: Protecting The Origin 30 Jul 2013 | 10:20 pm
One of the great features that CloudFlare provides is protection from Distributed Denial of Service (DDoS) attacks. A malicious party who wants to make your website or web service unavailable could tr...
A Tour Inside CloudFlare's Latest Generation Servers 22 Jul 2013 | 10:30 pm
CloudFlare operates at a significant scale, handling more than a trillion requests through our network every month. To ensure this is as efficient as possible, we own and operate all the equipment in ...
Government Surveillance: Why Transparency Matters 18 Jul 2013 | 06:00 pm
The web is one of the greatest inventions of human history because it has made the world more transparent. Fundamentally, that's what the web does: it takes information that was inaccessible and opaqu...
