Dyn DDoS this AM?
lists at eitanadler.com
Sat Oct 22 01:35:41 UTC 2016
On 21 October 2016 at 18:12, Jean-Francois Mezei
<jfmezei_nanog at vaxination.ca> wrote:
> On 2016-10-21 18:45, david raistrick wrote:
>> switch too..). setting TTLs that make sense for a design that supports
>> change is also easy.
> Cuts both ways. Had Twitter had TTLs of say 7 days, vast majority
> wouldn't notice an outage of a few hours because their local cache wa
> still valid.
In practice TTLs tend to be ignored on the public internet. In past
research I've been involved with browser behavior was effectively
random despite the TTL set.
 more specifically, the chain of DNS resolution and caching down to
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