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DNS outage post-mortem

When Anycast DNS at the edge fails, every zone CNAME looks down even if cache nodes are healthy. This post-mortem covers what operators check: nameserver health, TTL on customer CNAMEs, and the status timeline.

Historical incidents are on NetDNA Status including the DNS records note. Architecture: global Anycast DNS.

February « 2010

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NetDNA.com Selects Wowza as its Premiere Media Server Partner for HDDN.com Video CDN

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NetDNA.com Selects Wowza as its Premiere Media Server Partner for HDDN.com Video CDN

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November « 2009

From the recovered NetDNA blog.

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