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  CSS box-shadow Can Slow Down Scrolling

Working on one of the Chromebooks Google lets you borrow on Virgin America flights, I noticed scrolling down the page on my airbnb.com dashboard was much slower than on my normal laptop. I chalked it up to weak Chromebook hardware, but other sites were scrolling just fine. box-shadow had caused slow scrolling on our search results page before, so I did some investigation.I used Chrome's Timeline tab to see the duration of paint events on the page. Before each test I forced a garbage collection a...

   CSS,box-shadow,performance,Timeline,Chromebook     2011-11-13 08:13:48

  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

  How does Class box get 1 million users with only 4 people?

"Class box" is an app which helps students create course plan developed by 4 Chinese. This app was created in 2012. They get over 1 million users with only 4 people. How do they make this? The co-founder of "Class box" Tianfang Li explains this on Zhihu. Here is what he said: About millions of users, in the mobile Internet era what we need to do is just find a good entry point, rapid iteration and with a little luck, a small team or even an independent developer can make millions user level prod...

   class box,team size,sillicon valley     2013-04-03 08:08:21

  App defeats web

As an admired rock musician and co-founder of the venture capital firm Elevation Partners, Roger McNamee has a statement about Apple : The reason why Apple is so successful today is because App defeats Web.Apple divides contents of web into small apps, and then ask users to pay. This actually means that Apple creates a new business model which is fundamentally different from Web.Commodity Content and Differential ContentCommodity Content is the information model in desktop and web era which is h...

   App,Web,Apple,HTML5     2012-05-16 05:16:00

  Are you ready for Facebook's phone?

According  to Sina Tech, Facebook will announce its own phone today in US. They will also release its new Android application. The Facebook phone is manufactured by HTC, the model will be HTC First. This will be a deeply customized Facebook phone, some IT professionals think this phone's name is very similar to HTC's flag model HTC One. This phone may provide a home screen application named Facebook Home. Facebook Home adopts the minimization design, it can display photos in full screen. T...

   Facebook phone,HTC,Facebook Home     2013-04-04 07:01:12

  The dystopia from “Blade Runner 2049” to come to mobile phones

Next Games, a Finnish mobile game developer and publisher is working along with Alcon Entertainment for the development of "Blade Runner 2049". The Next Games CEO, Teemu Huuhtanen disclosed the news this month in Electronics Entertainment Expo 2017. Besides displaying only a screenshot, the companies are yet to uncover the details regarding the release date and the title of the game. Alcon Entertainment is busy in the production of movie "Blade Runner 2049", a sequel to the 1982's dys...

   MOBILE GAME DEVELOPMENT, MOBILE GAME SERVICE,GAMES APPS SERVICE,GAME APPLICATION SERVICE     2017-06-29 12:33:18

  Additional steps need to implement to setup shadow-boxV2 OPTEE on Raspberry PI

We followed the Shadow-box v2 project from the https://github.com/kkamagui/shadow-box-for-arm to set up the trustZone on Raspberry PI modeB to protect the Linux Kernel. But got a problem when doing the step: [3.6.5. Activate Shadow-Box for ARM and Start Secure Pi!] to create the hash for the memory area. The result is not shown. If you met the same problem, this is what I did to fix the problem on my PI: 1.1  When we do the step [3.5.1. Copy OP-TEE OS with Shadow-Box for ARM and N...

   HARDWARE,RASPBERRY PI     2019-05-20 08:52:55

  Advanced event registration models

On this page I explain the two advanced event registration models: W3C’s and Microsoft’s. Since neither is cross–browser supported, their use is, for the moment, deprecated. W3C and Microsoft have both developed their own event registration model to replace Netscape’s traditional model. Though I’m not impressed by the Microsoft model, W3C’s is very good, except for one crucial vagueness. Unfortunately few browsers support it at the moment. W3C W3Câ...

   JavaScript,Event model,this,bubble,capturing     2011-12-27 09:20:44

  Language Complexity?

Some languages are complex, others are simple … right?  C++ versus just about anything else is a good example here.  But, it begs the question: what makes a language complex? So, I’ve just been reading Bruce Eckel’s Artima article on Scala.  It’s actually a nice article, and I enjoyed it.  But, one thing bugged me — and, it’s nicely summarised in this quote: But you can see from the code above that learning Scala should be a lot eas...

   Programming language,complexity     2011-06-15 02:16:05

  A Python assignment trap

Python has no assignment, it only has reference. Assume, we have following code snippet: >>> values = [0, 1, 2] >>> values[1] = values >>> values [0, [...], 2] Why the result is not [0, [0, 1, 2], 2], instead it goes into an infinite loop? To understand this, we need to understand some basics about Python. Python has no variables, it only has labels. When we run: values = [0, 1, 2] Python will first create a list object [0,1,2], then it labels it as values. If we later...

   Python,Assignment,Trap,Shallow copy     2013-07-19 22:08:36

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