State of Technology -#9

#at_other_places –

#architecture –  A great lowdown of Heroku architecture – Quora rocks!

#code – Dynatrace guys keep delivering fascinating performance content. This time, they came out with ‘How Garbage Collection differs in the three big JVMs

#design –
Bento Book

#essay – Is process killing developer passion? Comments are on fire too.

#mobile – A great, great collection of Mobile UI elements


#saas –
Lessons NetFlix learned from the AWS outage (aside from uber-cool ‘Chaos Monkey’)

#social – Loved this meme – “Last month everyone was a nuclear physicist. Today everyone is a web scalability architect”


#tool –  Ten Commandments of good SCM

#tweaks n’ hacks –  Worked out Harmony Search – ‘neat optimization algorithm based on the principles of performing jazz musicians by applying it to solve Sudoku puzzles’

Never trust what you just see –
our eyes are mostly best-estimate tools. A great collection of visual paradoxes


#parting_thought – ‘When teaching, light a fire, don’t fill a bucket.’ – Dan Snow

Double Edition : State of Data -#48, 49 (Break for next 3 weeks)

#analysis – Felix Salmon brilliantly analyzes “Grouponomics” – if you do not buy wine, restaurant loses — “diners paid $15 for their Groupon — which gave them $30 of food..So even after knocking $22.50 off the bill (remember that Giorgio’s kept $7.50 of the proceeds of Groupon), the restaurant would often still make money


Design of Large Scale Log Analysis (PDF) from Microsoft – if you ever need to glean into web server logs, or behavioral logs or want to see ‘what logs cannot tell us’ this is a good resource to ratify. This editor’s favorite analysis fallacy (Simpson’s Paradox) is mentioned as well.

#architecture – Why Guardian chose MongoDB
One of the most scalable, performing and challenging “integration” problems ever – solved within dated infrastructure – “The Incredible delivery system of India’s Dabbawallahs” – there are SO MANY patterns to learn about (data) movement as well from here. 


#big_data – Here is to the huge potential hidden within Google Maps Directions Logs – “massive logs of people asking for directions from A to B,… And, it appears this data may be as or more useful than user reviews of businesses and maybe GPS trails for local search ranking, recommending nearby places, and perhaps local and personalized deals and advertising

The paper referenced above is a good read too – “at least 20% of web queries have local intent”, “time-aware scoring” – how one gets results back depending if the search for ‘beer’ was made during 10AM, Monday vs. 10PM, Friday etc.

#DBMS – How StackOverflow made pages 100x faster by….SQL tuning

Talking of tuning, full “Oracle Performance Tuning” Course (on Video) is now available on Safari

#learning –
Two good tools for text analysis — Word Frequency Lists and SentiWordNet

Presentation on Drizzle by Brian Aker who led MySQL until Oracle acquired Sun. Interesting observations on not only database but best practices and prevalent approaches in the industry (replication, virtualization, etc.)”

#visualization – “How Quick Can We Be – Current Data Visualization Techniques for Front-end Engineers” – shows some neat tricks with OpenHeatMap, Fusion Tables and Google Charts — slide-deck from JS Conf 2011 (full conference slides available here)

How to solve problems with Visual Analytics (PDF; 25M) – free ebook from Vismaster, European consortium for data visualization


State of Technology -#8

#at_other_places –

#architecture –  What a convert – Jeff Atwood bats for Solid State Disk – “I can’t imagine using a computer without a SSD any more; it’d be like going back to dial-up internet or 13″ CRTs or single button mice. Over my dead body, man!

#code – A great lowdown of Java Memory Model – things you really need to know to “fix or improve”

#design – BRING OUT THE VOTE to encourage our kids
! What would be your favorite doodle?

#essay – Why more women should take up Computer Science

#mobile – Get Sticky Notes 1:1 with iPhone / iPad / Android to brainstorm UX – you’d see how exactly it would look.


#saas –
FourSquare users spend 3.5x as much non FourSquare users. Really?

#social – Tweet Topic Explorer lets you pick a user and see what interests him /her


#tool –  Ever wonder why Chrome is so resource intensive? Chrome’s process model explained

#tweaks n’ hacks –   This is what happens when you parallel stack 17 Apple main boards together


  • Tired of hearing bloated office language? “Unsuck it
  • It is never too late, for repeats – what the server header responses mean infographic and some of the best “404 – not found” abstractions.

#parting_thought – You will be newbie forever. Get good at the beginner mode, learning new programs, asking dumb questions, making stupid mistakes, soliticting help, and helping others with what you learn (the best way to learn yourself)
Kevin Kelly on Techno Life Skills

State of Data -#47

#analysis – Do beautiful parents really have more daughters? ‘Statistical Challenges in estimating small effects’ (From Andrew Gelman’s talk)

#architecture –  
Data Mining Certificate” from Stanford Center for Professional Development

#big_data –
Why an outage could literally kill – Cardiac patients were at risk because Amazon Cloud was down

Former CEO of mySQL who left with concerns now saysCode ‘in better shape than ever’ under Oracle

#learning –
How to send HTML reports straight from SQL*Plus (Oracle only)

#visualization –Learn how to use “sparklines” (small diagrams inserted into a text, e.g., tweets).e.g., CPU utilization in our servers today for peak 5-hrs was ▁▂▂▇▂ (18 23 24 43 24)

Is this really the “worst statistical graphic” ever?