The Internet is a cooperative system: CNAME to Dyn DNS outage of 6 July 2015
Today, shortly after 21:00 UTC, on our internal operations chat there was a scary message from one of our senior support staff: "getting DNS resolution errors on support.cloudflare.com", at the same...
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Increasing Cache Hit Rates with Query String Sort
Optimized Performance: Increasing Cache Hit Rate At CloudFlare, we care a lot about serving requests as fast as possible. Files can be served much faster when already in CloudFlare’s cache. Skipping...
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Fighting Cancer: The Unexpected Benefit Of Open Sourcing Our Code
Recently I was contacted by Dr. Igor Kozin from The Institute of Cancer Research in London. He asked about the optimal way to compile CloudFlare's open source fork of zlib. It turns out that zlib is...
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CloudFlare Lands a New Office in Singapore
After months of preparation, my teammates Algin, Marty, Adam, Jono and I touched down in Singapore and were greeted by skyscrapers, malls, Singlish, chili crab, and Marty’s special sweet and sour...
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Célébrer le 14 Juillet avec Marseille, le 36ème point de présence de CloudFlare
What better day than the 14th of July (Bastille Day) to announce the latest addition to our network in Marseille, France? Our data center in the southern city of Marseille is our 2nd in France, 12th...
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Introducing Partner Analytics
CloudFlare has over 5,000 hosting provider partners. Every day, thousands of our partners' customers take advantage of CloudFlare to help them be faster and more secure. The benefits to our partners...
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CloudFlare headed to HostingCon 2015. Thanks for the memories and let’s...
The CloudFlare team is heading to HostingCon 2015 in San Diego next week. We are excited to meet colleagues from the industry, reconnect with partners, and make new friends. This year’s conference...
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Bucharest, Romania: CloudFlare's 37th data center
Our global expansion continues in Bucharest, Romania, the 6th largest city in the European Union* following London, Berlin, Madrid, Rome, and Paris (nearly all of which feature a CloudFlare PoP!)....
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Quick and dirty annotations for Go stack traces
CloudFlare’s DNS server, RRDNS, is entirely written in Go and typically runs tens of thousands goroutines. Since goroutines are cheap and Go I/O is blocking we run one goroutine per file descriptor we...
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A deep look at CVE-2015-5477 and how CloudFlare Virtual DNS customers are...
Last week ISC published a patch for a critical remotely exploitable vulnerability in the BIND9 DNS server capable of causing a crash with a single packet. CC BY 2.0 image by Ralph Aversen The public...
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Dublin, Ireland: CloudFlare's 38th data center
Top of the morning to our users and readers from Ireland! Our latest PoP in Dublin is our 38th globally, and 14th in Europe following our Bucharest deployment last week. As of yesterday, traffic from...
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Up and to the Right: Forrester Research Ranks CloudFlare as a “Leader” for...
Forrester Research, Inc. has released The Forrester Wave™: DDoS Services Providers, Q3 2015 report which ranks CloudFlare as a leader. How do you get placed “up and to the right”? The leaders in this...
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DNS parser, meet Go fuzzer
Here at CloudFlare we are heavy users of the github.com/miekg/dns Go DNS library and we make sure to contribute to its development as much as possible. Therefore when Dmitry Vyukov published go-fuzz...
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Now serving the Middle East: 4 new data centers, partnerships
Our last embarkation into a new geography coincided with a significant milestone: our 30th data center (and first in Africa) in Johannesburg, South Africa. And as we march past number 40, we’re proud...
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Dear Internet, Send Us Your Videos
CloudFlare turns 5 years old this September. It's been an amazing ride since our launch. Before we launched at TechCrunch Disrupt on September 27, 2010, we'd signed up about 1,000 beta customers. It...
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Ensuring the web is for everyone
This is the text of an internal email I sent at CloudFlare that we thought worth sharing more widely. I annotated it a bit with links that weren't in the original. "Tim Berners-Lee- Mosaic by Sue...
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Introducing a Powerful Way to Purge Cache on CloudFlare: Purge by Cache-Tag
Today CloudFlare is introducing a new way to purge the cache using Cache-Tags. Cache-Tags are assigned to cached content via a Cache-Tag response header, and are stored as metadata with cached objects...
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Mombasa, Kenya: CloudFlare's 43rd data center
Only two weeks after the announcement of our four new points of presence (PoPs) in the Middle East, it is with much hullabaloo that we announce our 43rd PoP, and second in Africa following...
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SXSW Interactive 2016: Vote for CloudFlare’s Submissions
It’s that time of year again, when the end of summer is in sight, students are back in school, football is on TV again, and your social feeds are flooded with “vote for my panel at SXSW” updates....
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Railgun v5 has landed: better, faster, lighter
Three years ago we launched Railgun, CloudFlare's origin network optimizer. Railgun allows us to cache the uncacheable to accelerate the connection between CloudFlare and our customers' origin servers....
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