Archive for April, 2011

Who is affected by EC2? – EC2Disabled.com [by Amazon AWS outage of 21 April 2011]

Saturday, April 23rd, 2011

The subj. looks really bad!

AWS is down: Why the sky is falling – justinsb’s posterous

Friday, April 22nd, 2011

A blog post explaining nature of the current Amazon AWS outage. The deal is that several so-called availability zones (AZ) failed simultaneously in amazon US-EAST region, even though amazon’s FAQ describe such event to be unlikely. Many interestin…

Dropbox Lack of Security – Miguel de Icaza

Thursday, April 21st, 2011

“This announcement means that Dropbox never had any mechanism to prevent employees from accessing your files, and it means that Dropbox never had the crypto smarts to ensure the privacy of your files and never had the smarts to only decrypt the files f…

The Lord of the Rings – a review by a Tolkien-virgin

Thursday, April 21st, 2011

A review of three Lord of The Ring movies from someone who never read Tolkin’s books before. Hllarios, read it of you have 30 minutes to spare. Taken from AVVA ( http://avva.livejournal.com/ )

Real-World Web Application Benchmarking | Facebook

Tuesday, April 19th, 2011

Facebook has build custom web-app testing framework to test server performance. Read it, especially the section on why “standard” SPECxxx benchmarks are not a good measure of anything. Also, ready about performance-per-watt, as this is really import…

Understanding the StackOverflow Database Schema – SQLServerPedia

Tuesday, April 19th, 2011

Notes about schema used by StackOverflow.com and related websites. It is very simple, only several tables used. (most likely because there are performance problems with joins)

Ultra-Large-Scale-Sites / Walter Kriha, Scalability and Availability Aspects [application/pdf]

Tuesday, April 19th, 2011

a draft of the book “Scalability and Availability Aspects” by Walter Kriha. Many up-to-date info on theory and practice of building scalable high-loaded web/internet systems

IPv6 Ready

Monday, April 18th, 2011

This blog is available on IPv6 as of today

Solving Every Sudoku Puzzle [by Peter Norvig]

Friday, April 15th, 2011

An essay by Peter Norvig showing how to program sudoku solver.
Note: Read this if you are a software developer . Even better is to print it out and read it with a pencil.

InfoQ: Solving Sudoku with TDD

Friday, April 15th, 2011

an article (with a lot of useful links, make sure you follow them) about how Ron Jeffries (author of XP programming) solves sudoku algo in a series of 5 blog articles to show his TDD approach. This is was contrasted by Peter Norvig solving the same pr…