In the last post in this series, I looked at the whois database to make certain the registration information for a particular domain name is correct. Now it’s time to dig a little deeper into the DFZ to see what we can find. To put this series in the widest context possible, we will begin by assuming we don’t actually know the Autonomous System number associated with the domain name we’re looking for—which means we will need to somehow find out which AS number belongs to the organization who’s routes we are trying to understand better. The best place to start in our quest for an AS number that matches a domain name is peeringdb. The front page of peeringdb looks like this—
As the front page says, peeringdb primarily exists to facilitate peering among providers. Assume you find you are a large college, and you find you have a lot of traffic heading to LinkedIn—that, in fact, this traffic is consuming a large amount of your transit traffic through your upstream provider. You would really like to offload this traffic in some way directly to LinkedIn, so you can stop paying the transit costs to this particular network. But Continue reading
The software could eliminate another box at the branch.
This is a guest post by Urban Airship. Contributors: Adam Lowry, Sean Moran, Mike Herrick, Lisa Orr, Todd Johnson, Christine Ciandrini, Ashish Warty, Nick Adlard, Mele Sax-Barnett, Niall Kelly, Graham Forest, and Gavin McQuillan
Urban Airship is trusted by thousands of businesses looking to grow with mobile. Urban Airship is a seven year old SaaS company and has a freemium business model so you can try it for free. For more information, visit www.urbanairship.com. Urban Airship now averages more than one billion push notifications delivered daily. This post highlights Urban Airship notification usage for the 2016 U.S. election, exploring the architecture of the system--the Core Delivery Pipeline--that delivers billions of real-time notifications for news publishers.
In the 24 hours surrounding Election Day, Urban Airship delivered 2.5 billion notifications—its highest daily volume ever. This is equivalent to 8 notification per person in the United States or 1 notification for every active smartphone in the world. While Urban Airship powers more than 45,000 apps across every industry vertical, analysis of the election usage data shows that more than 400 media apps were responsible for 60% of this record volume, sending 1.5 billion notifications Continue reading
Forward Networks uses formal verification to model network behavior and help prevent outages.