Anycast

June 06, 2019 2:01PM

Many overlook a critical portion of the language in Cloudflare’s mission: “to help build a better Internet.” From the beginning, we knew a mission this bold, an undertaking of this magnitude, couldn’t be done alone....

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  Dan Hollinger

May 18, 2019 4:00PM

Recently at I gave a short talk titled "Linux at Cloudflare". The talk ended up being mostly about BPF. It seems, no matter the question - BPF is the answer. Here is a transcript of a slightly adjusted version of that talk....

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  Marek Majkowski

September 10, 2018 10:21AM

Back in 2015 we deployed ECMP routing - Equal Cost Multi Path - within our datacenters. This technology allowed us to spread traffic heading to a single IP address across multiple physical servers....

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  Marek Majkowski

September 10, 2017 6:04PM

Since March 30, 2017, Cloudflare has been providing DNS Anycast service as additional F-Root instances under contract with ISC (the F-Root operator). F-Root is a single IPv4 address plus a single IPv6 address which both ISC and Cloudflare announce to the global Internet as a shared Anycast. This document reviews how F-Root has performed since that date in March 2017. The DNS root servers are an important utility provided to all clients on the Internet for free - all F root instances including those hosted on the Cloudflare network are a free service provided by both ISC and Cloudflare for public benefit. Because every online request begins with a DNS lookup, and every DNS lookup requires the retrieval of information stored on the DNS root servers, the DNS root servers plays an invaluable role to the functioning of the internet. At Cloudflare, we were...

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  Dani Grant