Stuff The Internet Says On Scalability For February 15th, 2019

Wake up! It's HighScalability time:

 

Opportunity crossed over the rainbow bridge after 15 years of loyal service. "Our beloved Opportunity remains silent." 

 

Do you like this sort of Stuff? I'd greatly appreciate your support on Patreon. Know anyone who needs cloud? I wrote Explain the Cloud Like I'm 10 just for them. It has 39 mostly 5 star reviews. They'll learn a lot and love you forever.

 

  • 200 million: per day YouTube videos recommended on home page; $9.3 billion: 27% increase in AI funding; 70%: Microsoft security bugs are memory safety issues; 11: new version of Perl; 24%: serverless users are new to cloud computing; 1 million: SpaceX satellite uplinks; $500K: ticket to mars; $13 billion: Google's new datacenter construction; 59%: increase in Tesla Autosteer accidents; $.30: reddit per user revenue; 38%: Airbnb bugs preventable by using types; 60K: data breaches reported since GDPR; 350: theoretical max rock stone skips;

  • Quoteable Quotes:
    • @gchaslot: Brian's hyper-engagement slowly biases YouTube: 1/ People who spend their lives on YT affect recommendations more 2/ So the content they watch gets more views 3/ Continue reading

SSH to all of the serial ports

This is just a quick-and-dirty script for logging into every serial port on an Opengear box, one in each tab of a MacOS terminal.

Used it just recently because I couldn't remember where a device console was connected.

Don't change mouse focus while it's running: It'll wind up dumping keystrokes into the wrong window.

for i in $(seq 48)
do
  port=$(expr 3000 + $i)
  sshcmd="ssh -p $port terminalserver"
  osascript \
    -e 'tell application "Terminal" to activate' \
    -e 'tell application "System Events" to tell process "Terminal" to keystroke "t" using command down' \
    -e "tell application \"System Events\" to tell process \"Terminal\" to keystroke \"$sshcmd\"" \
    -e "tell application \"System Events\" to tell process \"Terminal\" to key code 36"
done


Leaving it here in case somebody (probably me) finds it useful in the future.

Heavy Networking 430: The Future Of Networking With Guido Appenzeller

Today in our Future of Networking series I speak with Guido Appenzeller. He's been deeply involved in SDN and held key roles at Big Switch Networks and VMware, and now a new job at Yubico. We talk about the role of public cloud in IT, where the industry is with the adoption of "software-defined," the rise of whitebox, the P4 programming language, and more.

The post Heavy Networking 430: The Future Of Networking With Guido Appenzeller appeared first on Packet Pushers.

Loop Avoidance in VXLAN Networks

Antonio Boj sent me this interesting challenge:

Is there any way to avoid, prevent or at least mitigate bridging loops when using VXLAN with EVPN? Spanning-tree is not supported when using VXLAN encapsulation so I was hoping to use EVPN duplicate MAC detection.

MAC move dampening (or anything similar) doesn’t help if you have a forwarding loop. You might be able to use it to identify there’s a loop, but that’s it… and while you’re doing that your network is melting down.

Read more ...

A survey on dynamic and stochastic vehicle routing problems

A survey on dynamic and stochastic vehicle routing problems Ritzinger et al., International Journal of Production Research

It’s been a while since we last looked at an overview of dynamic vehicle routing problems: that was back in 2014 (See ‘Dynamic vehicle routing, pickup, and delivery problems’). That paper has fond memories for me, I looked at it while doing diligence for our investment in Deliveroo, and my how they’ve grown since then! With vehicle routing problems popping up in a number of interesting businesses, it’s time to take another look! Today’s paper choice is a more recent survey, focusing in on DSVRP problems.

So what exactly is a DSVRP problem? The VRP part stands for vehicle routing problems, typically you have a fleet of vehicles, and you need to use them to make a set of deliveries from point A to point B. How you assign pick-ups and deliveries to vehicles, and the routes those vehicles take, is the the VRP problem. Historically the VRP problem would be solved statically (we know up front the set of vehicles, pick-up and drop-off locations, etc.). Much more interesting (and much more realistic for many companies) is when we Continue reading

Kernel of Truth season 2 episode 1: EVPN on the host

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Click here for our previous episode.

Guess who’s back? Back again? The real Kernel of Truth podcast is back with season 2 and we’re starting off this season with all things EVPN! This topic is near and dear to Attilla de Groots’ heart having talked about it in his recent blog here. He now joins Atul Patel and our host Brian O’Sullivan to talk more about EVPN on host for multi-tenancy.

Join as we as discuss the problem that we’re solving for, how to deploy EVPN on the host, what the caveats are when deploying and more.

Guest Bios

Brian O’Sullivan: Brian currently heads Product Management for Cumulus Linux. For 15 or so years he’s held software Product Management positions at Juniper Networks as well as other smaller companies. Once he saw the change that was happening in the networking space, he decided to join Cumulus Networks to be a part of the open networking innovation. When not working, Brian is a voracious reader and has held a variety of jobs, including bartending in three countries and working as an extra in a German Continue reading

Solving Problems with Serverless – The Cloudflare LED Data Center Board, Part I

Solving Problems with Serverless – The Cloudflare LED Data Center Board, Part I

You know you have a cool job when your first project lets you bring your hobby into the office.

That’s what happened to me just a few short weeks ago when I joined Cloudflare. The task: to create a light-up version of our Data Center map – we’re talking more than a hundred LEDs tied to the deployment state of each and every Cloudflare data center. This map will be a part of our booths, so it has to be able to travel; meaning we have to consider physical shipping and the ability to update the data when the map is away from the office. And the fun part – we are debuting it at SF Developer Week in late February (I even get to give a talk about it!) That gave me one week of software time in our San Francisco office, and a little over two and a half in the Austin office with the physical materials.

Solving Problems with Serverless – The Cloudflare LED Data Center Board, Part I
What the final LEDs will look like on a map of the world.

So what does this have to do with Serverless? Well, let’s think about where and how this map will need to operate: This will be going to Continue reading

Vapor IO heads new edge computing alliance

Edge computing container specialist Vapor IO has organized the Kinetic Edge Alliance, a group of hardware, software and networking companies that plan to collaborate on accelerating the integration edge solutions.The list of partners includes Federated Wireless, Linode, MobiledgeX, Packet, StackPath, Alef Mobitech, Detecon International, Hitachi Vantara, New Continuum Data Centers, Pluribus Networks, and Seagate Technology.The Alliance plans to target the top 30 U.S. metro markets with its products, which cover nearly 50 percent of the U.S. population. So far, Vapor IO has begun rollouts in Chicago but plans for five more cities this year: Chicago, Pittsburgh, Atlanta, Dallas, Los Angeles, and Seattle.To read this article in full, please click here

Vapor IO heads new edge computing alliance

Edge computing container specialist Vapor IO has organized the Kinetic Edge Alliance, a group of hardware, software and networking companies that plan to collaborate on accelerating the integration edge solutions.The list of partners includes Federated Wireless, Linode, MobiledgeX, Packet, StackPath, Alef Mobitech, Detecon International, Hitachi Vantara, New Continuum Data Centers, Pluribus Networks, and Seagate Technology.The Alliance plans to target the top 30 U.S. metro markets with its products, which cover nearly 50 percent of the U.S. population. So far, Vapor IO has begun rollouts in Chicago but plans for five more cities this year: Chicago, Pittsburgh, Atlanta, Dallas, Los Angeles, and Seattle.To read this article in full, please click here

Vapor IO heads new edge computing alliance

Edge computing container specialist Vapor IO has organized the Kinetic Edge Alliance, a group of hardware, software and networking companies that plan to collaborate on accelerating the integration edge solutions.The list of partners includes Federated Wireless, Linode, MobiledgeX, Packet, StackPath, Alef Mobitech, Detecon International, Hitachi Vantara, New Continuum Data Centers, Pluribus Networks, and Seagate Technology.The Alliance plans to target the top 30 U.S. metro markets with its products, which cover nearly 50 percent of the U.S. population. So far, Vapor IO has begun rollouts in Chicago but plans for five more cities this year: Chicago, Pittsburgh, Atlanta, Dallas, Los Angeles, and Seattle.To read this article in full, please click here

Winning the Blackbird Battle

Winning the Blackbird Battle
US Court of Appeals for the Federal Circuit
Winning the Blackbird Battle

Frequent readers of the Cloudflare blog are aware of the efforts we’ve undertaken in response to our first encounter with a patent troll. We’re happy to report that on Wednesday, the U.S. Court of Appeals for the Federal Circuit issued an opinion affirming a lower court decision dismissing the case brought by Blackbird Tech. This is the last step in the process 1, we’ve won.

Winning the Blackbird Battle

In addition to vigorously opposing this case in court, we created and sponsored Project Jengo to push back against the incentives that empower patent trolls like Blackbird Tech. Now that the case is over, we will be wrapping up Project Jengo and will report back with a summary of the Project’s successes in the near future.

But before we move on from the litigation, I want to share a few reflections on this case.

We noted from the very beginning: “The infringement claim is not a close one … if the ‘335 patent is read broadly enough to cover our system (which shouldn’t happen), it would also cover any system where electronic communications are examined and redacted or modified.”

Winning the Blackbird Battle

Our initial observation, which we Continue reading

IBM Mashes Up PowerAI And Watson Machine Learning Stacks

Earlier in this decade, when the hyperscalers and the academics that run with them were building machine learning frameworks to transpose all kinds of data from one format to another – speech to text, text to speech, image to text, video to text, and so on – they were doing so not just for scientific curiosity. …

IBM Mashes Up PowerAI And Watson Machine Learning Stacks was written by Timothy Prickett Morgan at .

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