October 09, 2015 10:26AM
Single RX queue kernel bypass in Netmap for high packet rate networking
In a previous post we discussed the performance limitations of the Linux kernel network stack. We detailed the available kernel bypass techniques allowing user space programs to receive packets with high throughput....
June 16, 2015 1:47PM
How to receive a million packets per second
Last week during a casual conversation I overheard a colleague saying: "The Linux network stack is slow! You can't expect it to do more than 50 thousand packets per second per core!"...
July 11, 2014 1:00PM
Courage to change things
Speed & Reliability
Life @ Cloudflare
This was an internal email that I sent to the CloudFlare team about how we are not afraid to throw away old code. We thought it was worth sharing with a wider audience....
February 13, 2014 1:00AM
Technical Details Behind a 400Gbps NTP Amplification DDoS Attack
On Monday we mitigated a large DDoS that targeted one of our customers. The attack peaked just shy of 400Gbps. We've seen a handful of other attacks at this scale, but this is the largest attack we've seen that uses NTP amplification....
January 21, 2014 4:00PM
Protect Your Sites With Rapidly Deployed WAF Rules
An attack on your site could be catastrophic. Even a small attack can have major implications. Responding quickly to an attack is imperative....
December 22, 2013 5:00PM
Keeping our open source promise
Back in October I wrote a blog post about CloudFlare and open source software titled CloudFlare And Open Source Software: A Two-Way Street which detailed the many ways in which we use and support open source software....
December 06, 2012 9:19AM
Efficiently compressing dynamically generated web content
Speed & Reliability
With the widespread adoption of high bandwidth Internet connections in the home, offices and on mobile devices, limitations in available bandwidth to download web pages have largely been eliminated....
November 06, 2012 9:09AM
Why Google Went Offline Today and a Bit about How the Internet Works
Today, Google's services experienced a limited outage for about 27 minutes over some portions of the Internet. The reason this happened dives into the deep, dark corners of networking....
July 03, 2012 3:21PM
Go at CloudFlare
The other day I blogged here about our new Railgun software that speeds up the back haul between CloudFlare data centers and our clients' servers. At CloudFlare we're using a number of different languages depending on the task....
June 19, 2012 3:56PM
A note about Kerckhoff's Principle
The other day I wrote a long post describing in detail how we used to and how we now store customer passwords. Some people were surprised that we were open about this....