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Urs Hölzle
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Urs Hölzle 12h
Replying to @developius
There are two parties involved in getting a video from Youtube to you, Google and the end user ISP (mobile phone carrier, cable company, etc). We still have capacity for HD but were asked to downscale to help end user ISPs cope with their capacity crunch.
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Urs Hölzle Mar 26
"We’ve yet to see people successfully phished if they participate in Google’s Advanced Protection Program (APP), even if they are repeatedly targeted."
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Urs Hölzle Mar 26
Replying to @uhoelzle
We believe that we have found the root cause of this morning's problem, and the vendor has provided a fix that we're currently testing. So we don't expect the problem to recur. Have a good night!
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Urs Hölzle Mar 26
Replying to @uhoelzle
This morning's failure was a software bug in a third party router, and affected multiple routers which all crashed at around the same time. Such failures are quite rare but when they do happen, they tend to have a larger impact and make news :-(
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Urs Hölzle Mar 26
Replying to @uhoelzle
Obviously, things can still go wrong occasionally, as this morning's outage in Atlanta showed. But that's rare, because most failures are invisible because we have built-in redundancy, where a different router / network link / datacenter takes over for the failed one.
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Urs Hölzle Mar 26
Replying to @uhoelzle
And since we carry 99% of our traffic directly to the end user's local ISP, we can ensure capacity all the way up to an internet exchange in or near your city.
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Urs Hölzle Mar 26
Replying to @uhoelzle
Google's network is perhaps the highest capacity, most resilient global backbone network there is, and we have extra capacity for cases like this. And even if multiple things fail, we still have extra capacity.
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Urs Hölzle Mar 26
Since there was some excitement about this morning's network outage in Atlanta, here's more background on our network. In short: Covid-19 won't break it.
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Urs Hölzle Mar 26
When routers fail cleanly (say, power out) failover is quick, so you never hear about these. This wasn't such a simple case. We have "many" (not just two) routers in Atlanta so it wasn't an issue of missing redundancy.
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Urs Hölzle Mar 26
Very sorry about that! We had a router failure in Atlanta, which affected traffic routed through that region. Things should be back to normal now. Just to make sure: this wasn't related to traffic levels or any kind of overload, our network is not stressed by Covid-19.
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Urs Hölzle Mar 24
Replying to @uhoelzle
(And perhaps it's easier in Taiwan because the warmer weather may reduce the virus' ability to spread, but that doesn't affect the points Ben is making.)
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Urs Hölzle Mar 24
Insightful article by . The discussion of Coronavirus is halfway down, where Ben contrasts the divergence between countries that *acted* and countries that *talked*. Life in Taiwan is semi-normal because they acted.
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Urs Hölzle Mar 21
"The virus doesn’t spread. You spread it." So very true.
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Urs Hölzle Mar 21
Incredible (and moving) demonstration of what artists and technology can accomplish together, by the Rotterdam Philharmonic.
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Urs Hölzle Mar 19
If there's a way to win the fight against Covid-19 with HPC, we (with our partners Rescale and Azure) will provide compute resources to researchers and public health organizations at no cost.
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Urs Hölzle Mar 16
Almost exactly 17 years ago the world had a very close call with a deadly virus, SARS. Back then, Dr. Urbani's prompt action helped to contain the epidemic and saved the lives of countless people. Dr. Urbani died of SARS on March 29.
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Urs Hölzle Mar 15
For educators around the globe, we’ve created new distance learning resources, a YouTube Learning Hub, and webinars. We're working with groups around the world, e.g. in HK JP, IT, to help teachers for teachers use G Suite for Education.
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Urs Hölzle Mar 14
Excellent visualization of the impact of social distancing, and the huge difference between having 1/4 ignore it vs 1/8. (To be fair, the simulation uses an unrealistic / idealized Brownian motion model, but it's still an excellent way to illustrate the impact.)
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Urs Hölzle Mar 13
when are you going to support Security Keys?
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Urs Hölzle Mar 9
Replying to @jonmasters
A great video that makes this point (starting 4:50 into it) and many others:
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