Øredev 2010 - JVM Bytecode for Dummies. CoffeeScript. GFS the Google File System in 199 Lines of Python. GFS, the Google File System, sits as the backbone of the entire Google infrastructure.
However, for many it is a mystery, especially for those lucky enough to be more acquainted with high-level python code than low-level C operating system sources. But have no fear, we shall break through the veil and describe an implementation of GFS in 199 lines of python. Naturally, you may want to read about the theory and design of GFS in the original Google Research GFS paper. But we will aim to give the core concepts, with real working python code, in this article. Complete runnable python 2.6 source code, if you wish it, is available at the end of this post. A brief summary of GFS is as follows. The client class is the only user-visible portion of the GFS library. The master class simulates a GFS master server. The chunkserver class is the smallest in this project. We use main() as a test for all the client methods, including exceptions. . $ python gfs.py Writing... Keeping Zip.
I still have not decided whether I like the Zip file format... About two months ago, I stumbled upon an interesting problem. I was constructing a forensic timeline for some files on a hard drive (investigating a compromised host) and noticed that different unzip programs were showing me different dates. New York Times Looks for Answers in Data: Tech News « High up on the 28th floor of the New York Times, a pair of researchers have been poring over the newspaper’s data, looking to understand the way influence plays out online.
What Mark Hansen, a UCLA statistics professor on sabbatical, and Jer Thorp, a data artist in residence at the Times, have found is that stories take on a life of their own, which can be mapped and visualized in some startlingly beautiful ways. The work, still “crazy” preliminary, shows how organizations are looking to mine their data to find ways to improve their operations. And it also shows the challenges that lay ahead in trying to turn the data into clear actions. Hansen and Thorp, who talked at a TimesOnline TimesOpen event last night, took two weeks of August data from the paper, looking at how stories were shared through the Times’ site, Bit.ly and Twitter. While it’s still quite early, Hansen said the next steps will be to make the project handle both real-time and archived information. The Beautiful Art of Japanese Web Design – woorkup.com. Datamining. Data Mining 101: Finding Subversives with Amazon Wishlists.
Vast deposits of personal information sit in databases across the internet.
Terms used in phone conversations have become the grounds for federal investigation. Reputable organizations like the Catholic Worker, Greenpeace, and the Vegan Community Project, have come under scrutiny by FBI "counterterrorism" agents. "Data mining" of all that information and communication is at the heart of the furor over the recent disclosure of government snooping. "U.S. President George W. "Some officials described the program as a large data mining operation, the Times said, and described it as much larger than the White House has acknowledged. " Combining a data mining operation with the Patriot Act's power to access information makes it all too easy for the federal government to violate the Constitution's prohibition against unreasonable search.
It used to be you had to get a warrant to monitor a person or a group of people. Amazon wishlists lets anyone bookmark books for later purchase. Keywords #! Web Design Portfolio. What Colour are your bits? Thu 10 Jun 2004 by mskala Tags used: colour, copyright, philosophy There's a classic adventure game called Paranoia which is set in an extremely repressive Utopian futuristic world run by The Computer, who is Your Friend.
Looking at a recent LawMeme posting and related discussion, it occurred to me that the concept of colour-coded security clearances in Paranoia provides a good metaphor for a lot of copyright and intellectual freedom issues, and it may illuminate why we sometimes have difficulty communicating and understanding the ideologies in these areas. An article based on this one and its follow-ups, by me, Brett Bonfield, and Mary Fran Torpey, appeared in the 15 February 2008 issue of LJ, Library Journal. In Paranoia, everything has a colour-coded security level (from Infrared up to Ultraviolet) and everybody has a clearance on the same scale.
You are not allowed to touch, or have any dealings with, anything that exceeds your clearance. Bits do not naturally have Colour. Technophilia: Protect your web searches - Lifehacker.
710960 - What Killed Waterfall Could Kill Agile.- GitHub. Ganked from unreadable scribd doc here: Robert C.
Martin 20 Nov, 2010 In 1970 a software engineer named Dr. Winston W. Royce wrote a seminal paper entitled Managing the Development of Large Software Systems. He began the paper by setting up a straw-man process to knock down. Royce’s paper was an instant hit. There was just one problem. Though Royce railed and fought against it, the snowball was in motion.