Netflix Gives Data Center Tools To Fail

Nerval’s Lobster writes “Netflix has released Hystrix, a library designed for managing interactions between distributed systems, complete with ‘fallback’ options for when those systems inevitably fail. The code for Hystrix—which Netflix tested on its own systems—can be downloaded at Github, with documentation available here, in addition to a getting-started guide and operations examples, among others. Hystrix evolved out of Netflix’s need to manage an increasing rate of calls to its APIs, and resulted in (according to the company) a ‘dramatic improvement in uptime and resilience has been achieved through its use.’ The Netflix API receives more than 1 billion incoming calls per day, which translates into several billion outgoing calls (averaging a ratio of 1:6) to dozens of underlying systems, with peaks of over 100,000 dependency requests per second. That’s according to Netflix engineer Ben Christensen, who described the incredible loads on the company’s infrastructure in a February blog posting. The vast majority of those calls serve the discovery user interfaces (UIs) of the more than 800 different devices supported by Netflix.” Read more of this story at Slashdot.

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Netflix Gives Data Center Tools To Fail

Simple Router Software Could Boost Public Wi-Fi Throughput By 700 Percent

Using public Wi-Fi is a hit-and-miss endeavor: sometime’s its perfect, at others it’s bogged down so much as to be worthless. Fortunately a team of researchers has hit on a solution that can improve throughput by 700 percent —and because it’s software-based, it won’t even need any new hardware to have us all contentedly online. More »

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Simple Router Software Could Boost Public Wi-Fi Throughput By 700 Percent

US Navy tests first 11-meter missile-firing sea drone (video)

Advances in unmanned military tools and vehicles have come on leaps and bounds, but, until now, we haven’t seen a weapon firing drone operating in the seas. A recent test taking part offshore near Maryland saw several missiles launched from a new remote-controlled inflatable-hulled ship. While the Navy has used drones before for mine clearing and other defensive tasks, the small boat (similar to that pictured above) is the first experiment to involve true offensive capabilities. The almost zodiac-like craft has been an ongoing project over recent years, and contains a fully automated system which the Navy calls a “Precision Engagement Module” which uses an Mk-49 mounting with a dual missile launcher manufactured by Rafael. The hope is that such vehicles could patrol the coastline, or serve as a first defense against pirates, and other such small, fast-moving seafaring dangers. If you want to catch it in action, head past the break for the video, but don’t be fooled. While it might look like a series of misses, the Navy claims this is just a trick of the camera angle, with all six missiles apparently making contact. Continue reading US Navy tests first 11-meter missile-firing sea drone (video) Filed under: Robots , Transportation US Navy tests first 11-meter missile-firing sea drone (video) originally appeared on Engadget on Sun, 28 Oct 2012 05:18:00 EDT. Please see our terms for use of feeds . Permalink   Wired  |  Rafael  |  Email this  |  Comments

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US Navy tests first 11-meter missile-firing sea drone (video)