Fighting Cancer: The Unexpected Benefit Of Open Sourcing Our Code

Published on by Vlad Krasnov.

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 widely used to compress the SAM/BAM files that are used for DNA sequencing. And it turns out our zlib fork is the best open source solution for that file format. CC…

Increasing Cache Hit Rates with Query String Sort

Published on by Rajeev Sharma.

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 the trip to the customer’s web server eliminates the latency of that connection and saves bandwidth from the connection between CloudFlare and the customer’s origin, and allows us to utilize the full speed of…

The Internet is a cooperative system: CNAME to Dyn DNS outage of 6 July 2015

Published on by Ryan Lackey.

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 time as automated monitoring indicated a problem. Shortly thereafter, we saw alarms and feedback from a variety of customers (but not everyone) reporting "1001 errors", which indicated a DNS resolution…

Blue Light Special: Ensuring fast global configuration changes

Published on by Ben Cartwright-Cox.

CloudFlare operates a huge global network of servers that proxy our customers' web sites, operate as caches, inspect requests to ensure they are not malicious, deflect DDoS attacks and handle one of the largest authoritative DNS systems in the world. And where there's software there's configuration information. CloudFlare is highly customisable. Each customer has a unique configuration consisting of DNS records, all manner of settings (such as minification,…

Welcome UK2 Group!

Published on by Maria Karaivanova.

Today we are thrilled to welcome UK2 Group as a CloudFlare partner. Customers of UK2 Group (including its brands UK2.net, Midphase, and Westhost) are now able to access CloudFlare’s web performance and security solutions with a single click. Backed by CloudFlare, UK2 Group’s customers can now protect their websites against security threats, ensure only clean traffic gets served, and speed up site performance no matter…