Lisbon, Portugal
07/02/2019
Starting at 1342 UTC today we experienced a global outage across our network that resulted in visitors to Cloudflare-proxied domains being shown 502 errors (“Bad Gateway”). The cause of this outage was deployment of a single misconfigured rule within the Cloudflare Web Application Firewall (WAF) ...
04/17/2019
The promise of the AMP (Accelerated Mobile Pages) project was that it would make the web, and, in particular, the mobile web, much more pleasant to surf. The AMP HTML framework was designed to make web pages load quickly....
02/06/2019
If you are still awake there’s really one final question that you might want to know the answer to: What does the CTO do? The reality is that it means different things in different companies. But I can tell you a little about what I do....
02/05/2019
So, let me talk a bit about people. Software is made by people. Sometimes individuals but more likely by teams. I’ve talked earlier about some aspects of our architecture and our frequent rewrites but it’s people that make all that work. ...
02/04/2019
We don’t believe that any of our software, not a single line of code, provides us with a long-term advantage. We could, today, open source every single line of code at Cloudflare and we don’t believe we’d be hurt by it....
02/03/2019
After Cloudbleed, lots of things changed. We started to move away from memory-unsafe languages like C and C++ (there’s a lot more Go and Rust now). And every SIGABRT or crash on any machine results in an email to me and a message to the team responsible. ...
02/02/2019
It’s always best to speak plainly and honestly about the situation you are in. Or as Matthew Prince likes to put it “Panic Early”. Long ago I started a company in Silicon Valley which had the most beautiful code. ...
02/01/2019
I’ve worked at Cloudflare for more than seven years. Cloudflare itself is more than eight years old. So, I’ve been there since it was a very small company. About twenty people in fact. All of those people (except one, me) worked from an office in San Francisco. ...
10/23/2018
Today our partner IBM announced the general availability of Cloud Internet Services (CIS) Enterprise. It marks a significant step forward in the partnership that we announced at the IBM THINK event in March....
10/01/2018
This week at the Cloudflare Internet Summit I have the honour of sitting down and talking with Sophie Wilson. She designed the very first ARM processor instruction set in the mid-1980s and was part of the small team that built the foundations for the mobile world we live in....
09/29/2018
All of Cloudflare's staff were shocked at the events depicted in NCIS Season 16 Episode 1 where incorrect use of random numbers for encryption resulted in the insertion of multiple trojan horses that brought a nuclear reactor within seconds of a meltdown. Although Cloudflare has long been a competitor of the company responsible, Glowbeam Technologies, and uses similar random number generation technology, we would like to emphasize that there are significant differences between the two companies...
09/28/2018
In 1864 British computer pioneer Charles Babbage described the first key-value store to be used as part of his Analytical Engine. ...
09/25/2018
Six o’clock already, I was just in the middle of a dream, now I’m up, awake, looking at my Twitter stream. As I do that the Twitter app is making multiple API calls over HTTPS to Twitter’s servers somewhere on the Internet....
02/26/2018
Last week Troy Hunt launched his Pwned Password v2 service which has an API handled and cached by Cloudflare using a clever anonymity scheme. The following simple code can check if a password exists in Troy's database without sending the password to Troy....
01/22/2018
It is not uncommon for countries around the world to interrupt Internet access for political reasons or because of social unrest. We've seen this many times in the past (e.g. Gabon, Syria, Togo). Today, it appears that Internet access in the Democratic Republic of Congo has been greatly curtailed. ...
01/08/2018
Last week the news of two significant computer bugs was announced. They've been dubbed Meltdown and Spectre and they take advantage of very technical systems that modern CPUs have implemented to make computers extremely fast. ...
12/22/2017
During 2017 Cloudflare published 172 blog posts (including this one). If you need a distraction from the holiday festivities at this time of year here are some highlights from the year....
12/21/2017
At the end of 2016, I wrote a blog post with seven predictions for 2017. Let’s start by reviewing how I did. I’ll score myself with two points for being correct, one point for mostly right and zero for wrong. That’ll give me a maximum possible score of fourteen. Here goes......
12/11/2017
Six years ago when I joined Cloudflare the company had a capital F, about 20 employees, and a software stack that was mostly NGINX, PHP and PowerDNS (there was even a little Apache). ...
12/05/2017
It’s ironic that the one thing most programmers would really rather not have to spend time dealing with is... a computer. ...
