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serialxon How We Designed for Performance and Scale

If you write the code within the `gen_server` guidelines, state migration is supported by `code_change`:

http://www.erlang.org/doc/man/gen_server.html#Module:code_ch...

For example:

http://stackoverflow.com/questions/1840717/achieving-code-sw...

BTW, You can even support downgrade. :)

> Every fan in South Korea has an automatic shut-off feature - you can’t even buy a fan that will run all night. Impossible to purchase.

This statement is simply not true. I live in South Korea and I always run it all night in summer.

serialxon Parallelism and concurrency need different tools

If we just let kernel do the job, it's essentially a queue. If we do the packet processing ourselves, it can be a parallel problem.

http://highscalability.com/blog/2013/5/13/the-secret-to-10-m...

serialxon Five researchers deal SSL/TLS a biggish blow

Interesting.. It has more practical application to IMAP or POP3.

http://crypto.stackexchange.com/questions/3451/is-rc4-a-prob...

serialxon Show HN: Save Memory in Google Chrome

Please add a facebook share button. I would like to share this with my friends. :)

serialxon Those budget 27" IPS displays from Korea are for real

Take a look at this: http://www.danawa.com/product/list.html?defSite=DISPLAY&...

Simply take 3 zeros in the price tag to match dollars. There's even 220 dollar display!

serialxon Flame is Lame

No. The key to this malware being NOT lame is that it uses a new cryptographic attack. Which is, not helped by looking at Microsoft's source code.

serialxon Hand solderable 1GHz ARM Cortex A8 in TQFP package

It's definitely more hand-solderable than a ball-mount package. The latter one is basically impossible to solder using a tip.

serialxon Why is reading lines from stdin much slower in C++ than Python?

It shows us why just using C/C++ is not a performance-wise decision. You need to spend more time developing the product and spend MORE time to improve it's performance.

serialxon Flaw found in online encryption method

None of the newly found aected moduli are blacklisted (cf. [24]). Based on this brief analysis, we conclude that the problem reported in the main body of this paper persists and that the 99.8% security level of 1024-bit RSA moduli is further reduced.

pp. 15 http://eprint.iacr.org/2012/064.pdf

serialxon Realtime image processing in Python

I think differently. Normal C loop codes are hard to optimize using SIMD as the context and it's freedom can be the limiting factor.

But in python, the vector operations are normally programmed using simple array semantics. For example in NumPy:

  >>> a = array( [2,3,4] )
  >>> b = array( [2,3,4] )
  >>> a+b
  [4,6,8]

These can be easily converted into SIMD operations.

It's matter of time before PyPy's new NumPy implementation take traction and make simply beautiful optimizing JITs using that.

serialxon IPhones and 3G iPads log your location in an unencrypted file on the device

Maybe you are using Python 3?

make print statement to print() function.

serialxon Ask HN: ______ is to Python as K&R is to C?

Python in a Nutshell, O'Reilly Media, written by Alex Martelli http://oreilly.com/catalog/9780596100469/

Definitely recommended for learning Python fast&practically. It's the most comprehensive and useful Python reference book for programmers I've ever encountered.

serialxon IPhones and 3G iPads log your location in an unencrypted file on the device

Created a GPX file generator. Use it to convert the database into a GPX file format. Open it up with Google Earth.

https://github.com/serialx/iphonegpx

serialxon [dead]

Use the following mirrors if needed:

http://{b,c,d,e,f}.pypi.python.org/

See: http://www.pip-installer.org/en/latest/index.html#mirror-sup...

serialxon 8.9 earthquake hits Japan

Chiba Steel Mill explosion:

http://twitpic.com/48edb1

It's getting serious.