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  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

  Cloud Computing’s most Basic Concepts-Service Models

With the containerization of Docker, Kubernetes, CNCF, and the development of open-source communities, related frameworks and technology is booming and iterating rapidly. Cloud Computing, been applied for many years, is pushing developers into the new technological era. Companies and developers who are not using or not planning to use Cloud-Native gradually feel tremendous pressure in keeping up with the technology trends. The first step is to understand the concepts of IaaS, PaaS, FaaS, SaaS, S...

   CLOUD,PAAS,IAAS,CONCEPT     2021-01-24 05:23:11

  Introduction to OAuth (in Plain English)

Last week we talked about giving away your passwords and how you should never do it.  When a website wants to use the services of another—such as Bitly posting to your Twitter stream—instead of asking you to share your password, they should use OAuth instead. OAuth is an authentication protocol that allows you to approve one application interacting with another on your behalf without giving away your password. This is a quick guide to illustrate, as simply as possibl...

   Security,OAuth,Permission,Partial access     2012-04-05 11:39:54

  8 most successful open source products

Open source itself is a successful product. It is not only liked by many personals, many famous enterprises like itAlthough there are numerous open source projects and open source products, which is the most successful among them? "Success" is defined as the widely used + well known here. In many successful open source products, only a minority leaders. Here we share 8 most successful open source products we think they deserve to be.LinuxReason: Linux + GNU = GNU / Linux. It has been almost 2...

   Open source,MySQL,Linux,BIND,BSD     2012-04-19 08:29:00

  What do programmers like to say usually?

Coding is an very important part of programmer's daily work. But beyond coding, programmers need to do other work as well, they need to fix bugs reported by users, they need to write documents for their codes. Also, they often need to answer questions from customers, bosses and colleagues. What do they often say when they are facing different sort of questions? Today we share some. It's done. I just need to clean up a few things. This is hacky, but I'll fix it soon. This can never happen: It's ...

   Programmer,Execuse,Bug     2013-08-07 07:38:30

  Lenovo gets into the chip design field

According to EETimes, Lenovo will enter the field of chip design, the main focus is the smartphone and tablet chip design.There is a small team of 10 people who are working on integrated circuit design in Lenovo in the past 10 years, Till the middle of this year, Lenovo intends to expand the team to 100 engineers. Lenovo may recruit 40 engineers in Shenzhen and 60 engineers in Beijing.Despite Lenovo has much freedom in the choice of application processors, but because it involves a competitive ...

   Lenovo,Chip,Samsung,Smartphone     2013-04-01 06:15:54

  10 Web Design Elements that You Shouldn’t Overlook

When it comes to designing and building websites, it never seems to happen fast enough.Given this fast pace, many small details that are eventually required to build the website are often left out of the design process. While these details might be minor, they are what take a website from nice to truly awesome.These details are often easy to miss because they don’t drive the overall look and feel of the website. The problem is that as your development team works through the design, it wil...

   Web design,Verification,jQuery     2011-03-30 00:09:49

  Capture video stream with WebRTC

WebRTC(Web Real-Time Communication) is an API supporting real time audio and video communication through a browser. It is now a recommended W3C standard. This post is to show you how to capture video stream and screenshot with WebRTC. Capture video stream To play video stream from the video camera, we first need to put a video tag in our code: <video id="video"></video> The main function to get the video stream is the navigator.getUserMedia, as of now only few of the browsers support...

   WebRTC,Video,Screenshot     2013-10-24 21:04:41

  Google+ is sick

Google says that Google+ now has over 170million registered users, but according a new research report of Fast Company about Google+,  Google+ is just a virtual ghost town.This research selected a sample of 40,000 random Google+ users. The result is :The average post on Google+ has less than one +1, less than one reply, and less than one re-shareRoughly 30% of users who make a public post never make a second oneEven after making five public posts, there is a 15% chance that a user will not ...

   Google+,Sick,Research     2012-05-16 05:41:35

  How the Internet is Changing Economics

I'm not an economist by training, but I've spent a long time observing markets, and I've often wondered what the great economic thinkers of centuries past (Marx, Smith, Keynes, others) would say if they were alive today and could witness the transformations that have been caused by mass media (radio, TV, print) and the Internet. The Internet, in particular, has had a transformative effect that will doubtless be studied for hundreds of years to come. One of the things that can be said abou...

   Internet,Economic,Change,Reason     2012-01-14 12:03:05