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SEARCH KEYWORD -- SOFTWARE DEVELOPMENT

  Performance is a Feature

We've always put a heavy emphasis on performance at Stack Overflow and Stack Exchange. Not just because we're performance wonks (guilty!), but because we think speed is a competitive advantage. There's plenty of experimental data proving that the slower your website loads and displays, the less people will use it. [Google found that] the page with 10 results took 0.4 seconds to generate. The page with 30 results took 0.9 seconds. Half a second delay caused a 20% drop in traffic. Half a seco...

   Website,Perfomance,Optimization     2011-07-02 01:52:12

  Write Your Own R Packages

Introduction A set of user-defined functions (UDF) or utility functions are helpful to simplify our code and avoid repeating the same typing for daily analysis work. Previously, I saved all my R functions to a single R file. Whenever I want to use them, I can simply source the R file to import all functions. This is a simple but not perfect approach, especially when I want to check the documentation of certain functions. It was quite annoying that you can’t just type ?func&n...

   DATA SCIENCE,R PROGRAMMING,DATA ENGINEERING     2019-10-19 07:20:52

  Build your own internet search engine - Part 2

After having started to build my own internet search engine as described in a previous blog post, I now have read some papers and books about web search engine architecture and information retrieval to complete my hobby project. Here is a list of papers and books that I highly recommend to anybody who is interested in this topic: 1. Google: data structures and algorithms by Petteri Huuhka 2. The Anatomy of a Large-Scale Hypertextual Web Search Engine by the Google founde...

   Search engine,Paper,Database,Data structure     2011-12-22 08:25:59

  From College To Silicon Valley: Tips From A Veteran

Editor’s note: Pedram Keyani has been an engineer at Facebook since 2007. He is a manager on the Site Integrity team, the inventor of Keg Presence and a Hackathon enthusiast. Looking for internships and jobs after college can be exhilarating, especially for people with engineering and other technical expertise. In an otherwise tough job market, demand for software engineers is higher than ever right now. You may find that companies are actually competing to pay you for the knowledge y...

   Career,College,Silicon valley,Transition,Experience     2012-02-20 05:34:24

  Location matters for your startup

18 months ago I relocated from my home town of Glasgow, to London, just 400 miles away. An important reason for the move was because I had just started working on my new startup, Teamly, and I know that location matters, even when running an internet business. Don’t kid yourself otherwise, your chance of success is seriously improved when you’re in a startup hub.18 months later and moving to London has proved to be a smart move, for all the expected reasons, as well as  t...

   Startup,Location,Company,Brand,Popular location     2011-10-22 13:01:39

  Venn Diagram entirely in CSS

The HTML5 Microzone is presented by DZone and Microsoft to bring you the most interesting and relevant content on emerging web standards.  Experience all that the HTML5 Microzone has to offer on our homepage and check out the cutting edge web development tutorials on Script Junkie, Build My Pinned Site, and the HTML5 DevCenter. A friend of mine alerted me this weekend to just how much I have a weird fascination with Venn diagrams. I decided to roll with it. So yeah...

   CSS,Venn Diagram,Implementation     2012-02-06 08:10:41

  Obviously Correct

What do automatic memory management, static types and purity have in common? They are methods which take advantage of the fact that we can make programs obviously correct (for some partial definition of correctness) upon visual inspection. Code using automatic memory management is obviously correct for a class of memory bugs. Code using static types is obviously correct for a class of type bugs. Code using purity (no mutable references or side effects) isobviously c...

   Memory management,Code,Static,Purity     2011-11-07 08:13:05

  Secure Your Go Code With Vulnerability Check Tool

Security vulnerabilities exist in any language and any code, some are written by ourselves, but more are from the upstream dependencies, even the underlying Linux. We have discussed the security protection methods for Go and Kubernetes Image in Path to a Perfect Go Dockerfile and Image Vulnerability Scanning for Optimal Kubernetes Security, in which the security scanning was performed based on generic. As the Go community grows, more and more open-source packages have caused ...

   GOVULNCHECK,GOSEC,GOLANG     2022-10-29 23:43:20

  What is Hystrix and How does Hystrix work

Background In distributed systems, there is one effect where the unavailability of one service or some services will lead to the service unavailability of the whole system, this is called service avalanche effect. A common way to prevent service avalanche is do manual service fallback, in fact Hystrix also provides another option beside this. Definition of Service Avalanche Effect Service avalanche effect is a kind of effect where the service provider fails to provide service which causes t...

   AVALANCHE EFFECT,HYSTRIX,DISTRIBUTED SYSTEM     2019-02-04 06:00:38

  It makes nothing but sense...Mobile Payment...

Chinese New Year is around the corner, every place in China and lots of places in the work have been in the CNY mode. People are rushing out to get all the stuff ready to welcome the New Year Eveand the Spring Festival. I also packed my stuff and flew back to my howntown in China to enjoy the great moment to stay with families and hang out with friends whom I have't been seeing for almost one year. I am exited... However, the first thing stunned me is not my friends but the mobile payment s...

   CHINA,WECHAT PAY,ALIPAY,MOBILE PAYMENT     2018-02-12 00:07:46

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