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A Python Optimization Anecdote
Hi! I’m Pavel and I interned at Dropbox over the past summer. One of my biggest projects during this internship was optimizing Python for dynamic page generation on the website. By the end of the summer, I optimized many of dropbox.com’s pages to render 5 times faster. This came with a fair share of challenges though, which I’d like to write about today:The ProblemDropbox is a large website with lots of dynamically generated pages. The more pages that are dynamically generat...
Python,Anecodate,Optimization,Efficiency 2011-10-25 10:33:20
Do You Make These 5 Database Design Mistakes?
Look, everyone makes mistakes. It’s true. But not all of us have the chance to make mistakes that end up costing millions of dollars in hardware and production support costs. Any one of the following five mistakes listed below will add additional costs to your company. It’s guaranteed. The costs could be hardware related (extra disk space, network bandwidth), which tend to add up quickly. The costs are also support related (bad performance, database re-design, report cre...
Database design,Mistake,Advice,Data type,Compatibility 2012-01-03 11:25:13
Opinion: The Elusive 'Quick Iteration' - Tips for Indie Devs
[In this reprinted #altdevblogaday-opinion piece, WB Games/Kindling Games' Kristen Bornemann offers independent developers advice on iterating and shipping their projects as fast as possible.] From agile and scrum to extreme programming, everyone's trying to nail down what it takes to iterate on products quickly and efficiently. There are a lot of methodologies that you can employ to guide you through shipping products. But today, I'll be talking specifically about video games and how, as a...
Game,Electronic,Efficient,Development me 2011-08-15 07:41:47
Using JavaScript to operate clipboard
Browsers allow JavaScript to read and write data on clipboard. Generally script should not modify user's clipboard to avoid impacting user expectation, but there are cases where this can indeed bring convenience to users. For example, for some code snippet, user can copy it to clipboard with one click instead of select and copy manually. There are three options for clipboard operation provided in JavaScript/browser: document.execCommand() Asynchronous Clipboard API copy and paste events This p...
JAVASCRIPT,CLIPBOARD,NAVIGATOR.CLIPBOARD 2021-01-23 23:23:34
Parallel Javascript
Lately the ideas for a parallel, shared memory JavaScript have begun to take shape. I’ve been discussing with various JavaScript luminaries and it seems like a design is starting to emerge. This post serves as a documentation of the basic ideas; I’m sure the details will change as we go along. User Model The model is that a JavaScript worker (the “parentâ€) may spawn a number of child tasks (the “childrenâ€). The parent is suspended while the children exe...
Parallel JavaScript,API,Spawn,Parent,Task 2012-01-11 12:02:00
JavaScript as a First Language
At Khan Academy we've been investigating teaching Computer Science to students in some new and interesting ways. The most interesting aspect of which is that we're likely going to be teaching them JavaScript as their first language. We're in a very unique position as we're primarily aiming to teach students who've been through our previous math and science-centric curriculum. Because of this we can create some rather compelling exercises and projects that never would've been feasible other...
JavaScript,Learning,First language,Inheritence,Prototype 2011-12-23 07:53:45
Stuff The Internet Says On Scalability For September 16, 2011
Between love and madness lies HighScalability:Google now 10x better: MapReduce sorts 1 petabyte of data using 8000 computers in 33 minutes; 1 Billion on Social Networks;Tumblr at 10 Billion Posts; Twitter at 100 Million Users; Testing at Google Scale: 1800 builds, 120 million test suites, 60 million tests run daily.From the Dash Memo on Google's Plan: Go is a very promising systems-programming language in the vein of C++. We fully hope and expect that Go become...
Scalability,Go,Google,MapReduce,Muppet,M 2011-09-20 11:22:36
Building The Linux Kernel In 60 Seconds
In less than one minute, it's now possible to build the Linux kernel from source on a desktop. Besides finishing up the Phoronix Test Suite 3.6-Arendal release this weekend, on Saturday I began running some new Intel CPU benchmarks. In building the Linux 3.1 kernel for x86_64 in a default configuration (make defconfig), I've now managed to trim down the compile time to less than sixty seconds on a single-socket desktop system. Similar speeds can be achieved out of multi-socket servers and othe...
Linux kernal,Build,Intel processor,sgort time 2011-12-12 07:45:32
How Speeding The "Most Important Algorithm Of Our Lifetime" Could Change This Modern World
Math breakthroughs don't often capture the headlines--but MIT researchers have just made one that could lead to all sorts of amazing technological breakthroughs that in just a few years will touch every hour of your life. Last week at the Association for Computing Machinery's Symposium on Discrete Algorithms (SODA) a new way of calculating Fast Fourier Transforms was presented by a group of MIT researchers. It's possible that under cert...
FFT,Speed-up,Fast fourier transform 2012-03-20 07:47:04
7 ways to start learning how to code right now for free
Learning to code is one of the most powerful and satisfying things you can ever do. If you’re a designer, learning to code can help you understand what you’re creating for, and if you’re looking to build a startup from scratch, being a technical founder can make things exponentially easier for you. No matter why you want learn, the only thing you really need is curiosity. But if you’re just starting out as a novice and don’t know where to begin,...
Learn programming,Efficient way,Experiment,iPad 2012-02-03 08:11:21
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