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Frédéric Hannes
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Frédéric Hannes

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OMG, that is hilarious xD #bashbug #shellshock  
With news breaking yesterday of a potentially catastrophic bug in the Bash shell since dubbed "Shellshock," media outlets rushed to breathlessly tell viewers about their newly hackable Apple computers. In that rush, they almost universally got the facts wrong.
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About time...
After getting the approval of both the House and the Senate, the US cellphone unlocking bill needed just one more signature to remove the
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Steam Summer Sale is rumored to begin today :O #steam #summersale  
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Epic!
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+Kingsoft Office The "share on Facebook" message when I try to close Kingsoft Writer is getting a tadbit annoying after 5 times. Especially considering that I don't own a Facebook account. Though I appreciate the quality free software, it might be a good idea to limit said popup to a single time.
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Hi, thanks for your understanding and support!
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Dr. Neil deGrasse Tyson visited with Goddard's Space Flight Center Director Chris Scolese and the James Webb Space Telescope team at Goddard in Greenbelt, Md. on June 3, 2014. Tyson spoke to the team and was able to see the giant vacuum test chamber that now holds the heart of the telescope, the Integrated Science Instrument Module. http://bit.ly/1ou3AwY 
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I appear to be missing something...
 
Programming Language Infographics  http://goo.gl/a1R3Ya

Infographics about: 
- The History of Programming Languages

- Most Popular Coding Languages of 2014

- The Search Popularity of Programming Languages

- The World of Programming

- Cracking the Code

Read more: http://en.docsity.com/news/programming-2/5-programming-language-inforgraphics/
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It's the title that's misleading. This company tests candidates online for hiring companies. What they're measuring is the number of tests they've administered in each language. 

I've heard of exactly one Delphi developer who's ever had to take a coding test. I'm fairly certain CodeEval doesn't even offer testing in Delphi... it's hard to do since it's one of the last proprietary languages on Earth anyway.
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If it runs fast on RPi 2, it will run fast in the cloud!

Force your programmers to develop on Raspberry Pi 2!!!!

Problem: On highend notebooks, everthing appears to run fast. But later in the cloud, processors suffering under task switching between VMs and thousands of processes, cache misses dramatically increase, letting processor performance and I/O drop dramatically to just 1/100-1/1000 of what you see on your core i7 developer machine.

Here some suggestions:

- Using "column-store" databases: Speed improvement 4-15. See pioneer MonetDB.
- Using "append-only" databases: Speed improvement 10-100, allowing easy clustering, syncing. Only "append-only database engines" can scale! See #MVCC, Symas Lightning MDB #LMDB, http://sphia.org/pv12.html ,
- Using "invisible joins": Speed improvement 4-100. - Using Bloom filters, Bloom joins: Speed improvement 3-70. See MySQL cluster
- Optimizing for 1st level cache (only possible with C): Speed improvement 3-10, heavily depending on algorithms.
- Using RPi 2 cluster: Speed improvement: 0-n, heavily depending on algorithms.
- Multicore (RPi 2 now has 4 cores!) programming: Speed improvement 2-3, SDRAM I/O is the bottleneck.
- Using mmap(): Speed improvement 2-3, since writing doesn't block memory reading, heavily depends on algorithms, CPU cores. http://localmemcache.rubyforge.org/ , https://github.com/sck/clispy
- Doing your own memory allocation / management, also bypassing Linux file I/O caching: Speed improvement 8-50, heavily depending on algorithms.
- Using F2FS "append only", "flash friendly" file system: Speed improvement 1-20, built to heavily reduce writes.
- Using ASYNC I/O, generators, iterators: Speed improvement - negative, but latency times dramatically decreases as well as memory/buffer consumption.
- Using Van Emde Boas Tree for huge databases: Speed improvement 2-1000, since inserts, updates, deletes go with O(log(log(N)))!!! Also allowing heavy reduction of writes to disk/flash. See Skip List databases, e.g. #SkipDB
- Using small integers only (working with prediction models, based on just 256 price categories only) for #OLAP: Speed improvement 50-10000, in combination with #columnar stores and in-memory compression.
- Use SanDisk microSDHC Extreme 32GB (SDSDQXL-032G-GA4A) only. For some unknown reason it's the only card on the market without any flaws, suited for high, sustained write I/O also!

A $35 RPi 2 typically reaches half speed of an Intel® NUC. Being programmed smart, carefully choosing right algorithms (typically only available with C/C++ programming language), it blasts a $100,000 12 Core XEON INTEL machine, so my experience. Porting then optimized C/C++ code onto cloud machines, finally can reduce hardware costs for your cloud by a factor of 8-100 at even much higher peak performance.

http://blog.iron.io/2013/03/how-we-went-from-30-servers-to-2-go.html

See e.g. Netflix, serving 20,000-30,000 customer video streams on a single, highly optimized FreeBSD 10 machine running NginX http server: https://openconnect.itp.netflix.com/software/index.html

Also see performance comparison of CMS systems: https://www.techempower.com/benchmarks/#section=data-r9

Best C++ CMS so far: http://tntnet.org

So, much to rethink for you!

Have fun!
Sophia database performance been measured by benchmark which is based on real use-case. Sophia is used to store large email indexes. These indexes are used to search emails by keywords for any client. Search indexes are updated on every incoming email for each text word (inverted index).
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This looks pretty neat! #raspberrypi  
 
We first saw Pi-based #polargraph +gocupi a few weeks ago; now it's on Kickstarter, for the benefit of all those who, as they put it, have a need to robotically draw images on any vertical surface.
Gocupi includes hardware and software that allow your Raspberry Pi to be a polargraph of epic proportions.
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Delphi comes in at 27 =/
 
Top 10 Programming Languages in 2014
Looking to learn a new web or embedded programming language? See graph below for trending or most looked for languages by employers.

The graph is weighted and combined by Computational journalist Nick Diakopoulos and IEEE Spectrum with 12 metrics from popular sources such as IEEE Xplore, Google, and GitHub. 

See all metrics and source here:
http://spectrum.ieee.org/ns/IEEE_TPL/methods.html

via: http://spectrum.ieee.org/computing/software/top-10-programming-languages
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Troubled by the privacy implications of Google Glass, Berlin artist Julian Oliver has written a program to detect and disconnect Glass headsets, designed to be run on a single-board computer such as a Raspberry Pi with a USB network antenna.
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Today, we’re launching our overnight delivery service across Northern California, starting with the East Bay. 

East Bay residents can get fast delivery from stores like Target, Walgreens and Whole Foods Market- but also San Francisco-based favorites like Blue Bottle Coffee, Dodo Case, PhotoJojo and Timbuk2. 

Give it a try and get $10 off your first purchase*: g.co/shopex/nextday

We’ll be coming soon  to the rest of NorCal- stay tuned.




*See offer details: g.co/shopexpressterms
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The Google+ Project
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The Google+ project makes sharing online more like sharing in real life.

Discombobulate (Sherlock Holmes) : Robert Peeters
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