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RE: [Per-Entity] A little MDQ mvp in AWS


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  • From: Christopher Hubing <>
  • To: "Cantor, Scott" <>
  • Cc: Per-Entity Metadata Working Group <>
  • Subject: RE: [Per-Entity] A little MDQ mvp in AWS
  • Date: Thu, 13 Oct 2016 16:38:29 +0000
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On Thu, 13 Oct 2016, Cantor, Scott wrote:

I wanted to demonstrate that is possible to create a massively scalable
app in a short period of time with little infrastructure to manage. The
metadata isn't signed, but that could be done rather easily I would think.

If you mean online signing that's pretty much a non-starter for security reasons if nothing else, so once you take that out of the picture, it just doesn't take anything even that complicated. All you need is Apache and some files, as people have demonstrated.

Naw, it can be pre-signed.


What I noted on the last call was that CDNs seem to have a model that is very much specific to browsers: they don't care about HA for any given IP address, only that one of the addresses the browser gets is working. That model doesn't work for most non-browser HTTP clients, so I'm not sure any CDN-like approach will work terribly well in practice unless the failures (and by failure I don't mean actual outage but even just taking nodes out of service aggressively) are very rare.

Ah, so the concern is that a node goes away in the middle of serving a metadata request to the client. And, the client would not recover or retry the request?



-- Scott





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