Dublin, Ireland: CloudFlare's 38th data center

Published on by Joshua Motta.

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 Ireland's 3.6 million Internet users will now be routed through Dublin as opposed to our London PoP (which will still serve as a point of redundancy). Silicon Docks By know you've heard…

A deep look at CVE-2015-5477 and how CloudFlare Virtual DNS customers are protected

Published on by Filippo Valsorda.

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 summary tells us that a mistake in handling of queries for the TKEY type causes an assertion to fail, which in turn crashes the server. Since the assertion happens during the query…

Quick and dirty annotations for Go stack traces

Published on by Filippo Valsorda.

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 listen on and queue new packets for processing. CC BY-SA 2.0 image by wiredforlego When there are thousands of goroutines running, debug output quickly becomes difficult to interpret. For example, last week…

Bucharest, Romania: CloudFlare's 37th data center

Published on by Joshua Motta.

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!). From Bucharest, our latest data center will serve all 11 million Romanian Internet users, as well as users throughout the Balkans and Eastern Europe. In good company Romania is geographically situated between Bulgaria, Hungary, Moldova, Serbia, and Ukraine,…

CloudFlare headed to HostingCon 2015. Thanks for the memories and let’s create some more!

Published on by Maria Karaivanova.

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 marks a milestone of sorts. It’s our fifth time at HostingCon and we’ve come full circle - our first HostingCon took place in San Diego. Here are some fun facts on what we’…