Archive | January, 2014

Deploying & Scaling OpenShift on OpenStack using Heat – OpenStack S…

Deploying & Scaling OpenShift on OpenStack using Heat – OpenStack Seattle MeetUp 2014-01-23 by Diane Mueller @pythondj

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ESPN’s Architecture at Scale – Operating at 100,000 Duh Nuh Nuhs Per Second

Stats Internet’s #1 sports website. Top 10 of all sites. 5th largest website among men ages 18-54 (Facebook, Google, Microsoft, Yahoo are bigger). Powered by only a few hundred servers. A few dozen serve the major portions of the site, like the front-page service. Only a couple of dozen engineers. Peak 100,000 requests per second. Peak event was the World Cup. Sports specific data is gigabytes in size. Stack Java based. Oracle database, AQ Streams Message Broker WebSphere MQ Interesting integration of people on the ground as sources of data as well as automated feeds JMS Broker

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Magnetic tape to the rescue | The Economist

The Large Hadron Collider is the world’s biggest science experiment. When spinning, it reportedly generates up to six gigs of data per second. Today’s six-terabyte tape cartridges fill rapidly when you’re creating that amount of material. The Economist reports that despite the advances in SSDs and hard drives, tape still seems to be the way to go when you need to store massive amounts of digital assets.

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The Four Obsessions of an Extraordinary Executive | Notes & Review | vialogue


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Bling dashboards using Graphite and Dashing

Dashing is dashboard framework, created by the people at Shopify. It’s intended to create beautiful dashboards quicly and easily. If you take a look at the example application, you’ll immediately see what they mean. The dashboard is lively and looks a lot better than the default graphite graphs.

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Five Easy Ways to Fail | How Hard Could It Be? by Joel Spolsky |

Mistake No. 2: Set weekly milestones. Say you’re remodeling your kitchen. That guy you hired to do the work has done a lot of kitchens before, and can estimate the cost of the job without having detailed blueprints. But software developers are building things that they’ve never built before. If they had, they’d just sell you another copy of the CD-ROM. So rough estimates are impossible. They need to draw up detailed plans before they start writing code. Whether you’re the customer or the developers’ manager, your job is to make sure they come up with that blueprint. When you ask developers for one, however, many of them will respond by creating a schedule that breaks pieces of the process into weeks. This may seem perfectly reasonable, but it’s not. If you let a software team submit a schedule with big chunky estimates of time (by big I mean more than two days of work), you can be almost certain that they’re not considering every detail that needs to be implemented, and those details w

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The Online Education Revolution Drifts Off Course : NPR

“A year and a half ago … people thought this was going to solve the problems of higher education because people would be educated for less money. That’s not the way it’s worked out.” Now, San Jose State is scaling back its relationship with Udacity, taking more direct control of the courses it offers through the company and rethinking its commitment to MOOCs.

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