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  Simple explanation about process and thread

Process and thread are two basic concepts of operating system, but they are a bit abstract which cannot be  mastered easily. There is an analogy which explains these concepts very well. 1. The kernel of the computer is CPU, it handles all the computing tasks, it's like a factory and will run all the time. 2. Assume there is power limitation for the factory, it can only supply to one unit once,i.e, when one unit is working, other units must stop and wait. The meaning behind this is that eac...

   Process,Thread,CPU,Operating system     2013-04-24 11:33:10

  What is good design?

Some quotes about good design from a Germany designer Dieter Rams in documentary "Objectified": Good design should be innovative Good design should make a product useful Good design is aesthetic design Good design will make a product understandable Good design is honest Good design is unobtrusive Good design is long-lived Good design is consistent in every detail Good design is environmentally friendly Good design is as little design as possible This brings up a question -- what...

   METRO,SIMPLICITY,GOOD DESIGN,PRINCIOPLE,UNIX PHILOSOPHY     2012-05-09 06:48:11

  Supervisord, God and Monit, which one to choose?

With the popularity of Docker, more and more service have been moved into docker containers and they are easy to build up and maintain for each atomic service(though it's a bit complex to maintain multiple docker containers which contain different service to form a complete solution). Ideally, each docker container should only contain one service which has only one running process. However, in reality there would be cases multiple processes would run in one single docker container and there is a...

   DEVOPS,MONIT,SUPERVISORD,GOD,DOCKER     2017-11-25 12:28:11

  Why does Symbian collapse?

On 24th January, Nokia announces a disappointing news that they would give up Symbian. The 808 PureView released last year will be its last Symbian model.  Symbian was born in 1998, it was supported by the then three mobile giants : Sony Ericson, Motorola and Nokia after its birth, later Samsung and LG also joined the Symbian camp. In 2000, the first Symbian model in the world Ericoson R380 was released, in 20006, there were over 100 million Symbian handphones on the market. But in 2007, t...

   Nokia, Symbian, Collapse, Analysis     2013-01-28 03:06:09

  Java development company briefs about Lazy and Eager fetch in JPA/Hibernate

Normal 0 false false false EN-IN X-NONE X-NONE

   JAVA,JAVA DEVELOPMENT COMPANY,LAZY FETCH,EAGER FETCH,JPA,HIBERNET     2016-07-08 06:08:28

  Sundar Pichai : Excited to try out iOS 7

Google Android business executives Sundar Pichai said on Twitter that he was excited to try out iOS7 beta and he would like to register as a Apple developer in order to experience iOS 7 early.The real reason why Sundar Pichai expresses interest on iOS 7 is not yet known, but at least "Know thyself, ever-victorious" is correct. Because as a person who is in charge of Android, he should grasp the status of competitors in order to know what the Android system can improve.However, Apple's iOS 7 appl...

   iOS 7,Google,Sundar Pichai     2013-06-12 00:57:30

  About short URL and its implementation

IntroductionURL shortening is a kind of technique to convert a long URL to a short URL. There are many companies now providing this kind of service, we now take Google's URL shortener service http://goo.gl/ as an example.First we navigate to http://goo.gl/, then we enter a random URL into the text field, here we use http://www.url-to-be-shortened.com as the input, it will return us an shortened URL : http://goo.gl/ZSVMM. URL ParsingWhen we type http://goo.gl/ZSVMM in browser address bar, the DNS...

       2012-07-02 07:15:09

  How to Choose the Right Ruby on Rails Hosting Platform

Over the last decade, Ruby on Rails has become an increasingly popular framework for web-based apps. At its beginnings, hosting Rails was a real challenge and required a fair amount of relevant know-how. Nowadays, there are dozens of hosting platforms that provide cheap and accessible services for building and deploying Rails apps. In general, the choice of hosting should be based on your requirements and technical skills – some platforms are much more difficult to handle than others. Here...

   ruby on rails, ruby hosting     2015-01-30 06:27:47

  How to optimize MySQL insert statement

For a big data system, one problem is the data access efficiency, one more problem is that the data insertion is very slow. We had a service system, the data loading process would take 4-5 hours. This time consuming operation is risky since if the program is interrupted during the loading process, it might be rerun, this will be troublesome. So it's necessary to improve the insertion efficiency for big data systems. Here we provide two optimization suggestions. 1. Combine multiple insert stateme...

   MySQL,insert,optimization     2012-10-24 22:03:13

  Our Go Cache Library Choices

In Build a Go KV Cache from Scratch in 20 minutes, I walked you through what matters when writing a local cache, and eventually implemented one, whose performance was beaten badly by that of the popular go-cache on Github though. However, the bright side is that we can learn a lot from those excellent Github Go cache products, studying their features, applicable scenarios, and implementations, and extracting what we need. In this article, I will mainly analyze and compare the four...

   GOLANG,CACHE,GO-CACHE,BIGCACHE,GOURPCACHE     2022-04-16 07:48:11

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