January 01, 2017 10:40 PM
At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic. ...
December 30, 2016 2:34 PM
Looking back over 2016, we saw the good and bad that comes with widespread use and abuse of the Internet. ...
December 14, 2016 2:25 PM
We use Salt to manage our ever growing global fleet of machines. Salt is great for managing configurations and being the source of truth. We use it for remote command execution and for network automation tasks....
December 07, 2016 2:11 PM
The following blog post describes a debugging adventure on Cloudflare's Mesos-based cluster. This internal cluster is primarily used to process log file information so that Cloudflare customers have analytics, and for our systems that detect and respond to attacks....
December 05, 2016 1:54 PM
Recent headline grabbing DDoS attacks provoked heated debates in the DNS community. Everyone has strong opinions on how to harden DNS to avoid downtime in the future. Is it better to use a single DNS provider or multiple? ...
October 27, 2016 12:10 PM
Last Friday the popular DNS service Dyn suffered three waves of DDoS attacks that affected users first on the East Coast of the US, and later users worldwide. ...
October 26, 2016 12:59 PM
The last few weeks have seen several high-profile outages in legacy DNS and DDoS-mitigation services due to large scale attacks. Cloudflare's customers have, understandably, asked how we are positioned to handle similar attacks....
October 21, 2016 6:22 PM
Today there is an ongoing, large scale Denial-of-Service attack directed against Dyn DNS. While Cloudflare services are operating normally, if you are using both Cloudflare and Dyn services, your website may be affected....
October 11, 2016 12:59 PM
Over the last few weeks we've seen DDoS attacks hitting our systems that show that attackers have switched to new, large methods of bringing down web applications....
October 06, 2016 4:01 PM
Over the last six years, we’ve built the tooling, infrastructure and expertise to run a DNS network that handles our scale - we’ve answered a few million DNS queries in the few seconds since you started reading this....
September 30, 2016 7:56 PM
Cloudflare helps customers control their own traffic at the edge. One of two products that we introduced to empower customers to do so is Cloudflare Rate Limiting....
September 29, 2016 4:47 PM
Cloudflare's investment into building a large global network protects our customers from DDoS attacks, secures them with our Web Application Firewall and Universal SSL, as well as improving performance through our CDN and the many network-level optimizations we're constantly iter...
September 29, 2016 2:04 PM
Today, we're introducing two new Cloudflare Traffic products to give customers control over how Cloudflare’s edge network handles their traffic, allowing them to shape and direct it for their specific needs....
September 19, 2016 8:00 PM
Over 25% of all websites use WordPress, and over 10% of all internet traffic flows through CloudFlare; WordPress + CloudFlare has always been a winning combination, and now with CloudFlare’s new WordPress plugin, it's easier than ever to make your site 60% faster....
July 07, 2016 11:50 AM
A recent blog post posed the question Why do we use the Linux kernel's TCP stack?. It triggered a very interesting discussion on Hacker News....
June 30, 2016 12:09 PM
In April we announced that we had added experimental support for HTTP/2 Server Push to all CloudFlare web sites. We did this so that our customers could iterate on this new functionality. ...
June 29, 2016 1:09 PM
When writing an HTTP server or client in Go, timeouts are amongst the easiest and most subtle things to get wrong: there’s many to choose from, and a mistake can have no consequences for a long time, until the network glitches and the process hangs....
June 24, 2016 4:31 PM
We launched DNSSEC late last year and are already signing 56.9 billion DNS record sets per day. At this scale, we care a great deal about compute cost....
June 21, 2016 6:03 AM
We would like to share more details with our customers and readers on the internet outages that occurred this morning and earlier in the week, and what we are doing to prevent these from happening again....
