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Comment Re:Knuth didn't get anything wrong (Score 2, Interesting) 298

Other then varnish and squid what caching reverse proxy software is there? It looks like Nginx added caching to their core recently, although I'm not exactly sure if its intended to act in the same capacity as squid and varnish or to be more like mod_cache for lighttpd. I guess you could use apache and mod_proxy but that's not exactly high performance. I know my employer looked at the various offerings and we ended up writing our own on top of a webserver called OKWS.

Software

Knuth Got It Wrong 298

davecb writes "Think you've mastered the art of server performance? Think again. Poul-Henning Kamp, in an article at ACM Queue, finds an off-by-ten error in btrees, because they fail to take virtual memory into account. And he solves the problem in the open source 'Varnish' HTTP accelerator, for all of us to see and use."

Comment Re:Nice (Score 1) 491

Actually one of the provisions of the federal government taking over passenger rail (aka Amtrak) was that they got priority over freight. This is slowly being enforced more and more so it wouldn't be a factor. One thing I wonder is why the government doesn't just take some of the right of way that they granted the railroads way back when. The Pennsylvania Railroad used to have 4 tracks going clear across the state from Philadelphia to Pittsburgh. Since then they have ripped out 2 of them, why not have the government replace them with rail that's rated for high speed operation?

I think a large part of the problem is the regulations associated with running trains faster. I mean if I was a shareholder in the railroads and they could perform upgrades to get stuff across the country in 1 week instead of 2 and thereby beat the trucking industry it seems like it would be a worthwhile investment.

Medicine

Microbes That Keep Us Healthy Starting To Die Off 260

Dr_Ken writes with a quote from Scientific American: "The human body has some 10 trillion human cells—but 10 times that number of microbial cells. So what happens when such an important part of our bodies goes missing? With rapid changes in sanitation, medicine and lifestyle in the past century, some of these indigenous species are facing decline, displacement and possibly even extinction. In many of the world's larger ecosystems, scientists can predict what might happen when one of the central species is lost, but in the human microbial environment—which is still largely uncharacterized—most of these rapid changes are not yet understood. 'This is the next frontier and has real significance for human health, public health and medicine,' says Betsy Foxman, a professor of epidemiology at the University of Michigan School of Public Health in Ann Arbor. Meanwhile, each new generation in developed countries comes into the world with fewer of these native populations. 'They're actually missing some component of their microbiota that they've evolved to have,' Foxman says."
The Media

Submission + - Traditional News Media Leads Blogs by 2.5 Hours (peacecorpsonline.com) 1

Peace Corps Online writes: "The NY Times reports that researchers at Cornell studying the news cycle by looking for repeated phrases and tracking some 90 million articles and blog posts which appeared from August through October 2008 on 1.6 million mainstream media sites and blogs. have discovered that for the most part, traditional news outlets lead and the blogs follow, typically by 2.5 hours. The researchers studied frequently repeated short phrases, the equivalent of "genetic signatures" for ideas. The biggest text-snippet surge found in the study — "lipstick on a pig" originated in Barack Obama's colorful put-down of the claim by Senator John McCain and Gov. Sarah Palin that they were the genuine voices for change in the campaign. The researcher's paper, "Meme-tracking and the Dynamics of the News Cycle," (PDF) shows that although most news flowed from the traditional media to the blogs, 3.5 percent of story lines originated in the blogs and later made their way to traditional media. For example, when Mr. Obama said that the question of when life begins after conception was "above my pay grade," the remark was first reported extensively in blogs and though the blogosphere as a whole lags behind, a relative handful of blog sites are the quickest to pick up on things that later gain wide attention on the Web, led by Hot Air and Talking Points Memo. "This is a landmark piece of work on the flow of news through the world," said Eric Horvitz, a researcher at Microsoft. "The study shows how Web-scale analytics can serve as powerful sociological laboratories.""
United States

Submission + - Steve Fossett Killed By Downdraft (NTSB) (yahoo.com)

jd writes: "The NTSB has now released the text of its examination into the crash of Steve Fossett's aircraft on Sept 3rd, 2007. It concludes that downdrafts were the likely cause of the crash, dragging the plane into the mountain with such force that, even at full power, it would have been impossible to escape the collision. Pilots experienced in the area report that those winds can rip the wings off aircraft and Mark Twain remarked that they could roll up a tin house "like sheet music". One must wonder why such a skilled aviator was taking a gamble with such hostile conditions, given that he was looking for a flat stretch of land to race cars on, but that is one mystery we shall probably never know the answer to."

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