NDAA passed: Internet and Online Streaming Services Emergency Alert Study
Mark Delany
k3f at november.emu.st
Sun Jan 3 21:50:34 UTC 2021
On 03Jan21, Brandon Martin allegedly wrote:
> I was thinking more in the original context of this thread w.r.t.
> potential distribution of emergency alerts. That could, if
> semi-centralized, easily result in 100s of million connections to juggle
> across a single service just for the USA. While it presumably wouldn't
> be quite that centralized, it's a sizable problem to manage.
Indeed. But how do you know the clients are still connected? And if they aren't, there is
not much a server can do beyond discarding the state. Presumably the client would need to
run a fairly frequent keep-a-live/reconnect strategy to ensure the connection is still
functioning.
Which raises the question: how long a delay do you tolerate for an emergency alert? I
think the end result is a lot of active connections and keep-a-live traffic. Not really
quiescent at all. In the end, probably just as cheap to poll a CDN.
Mark.
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