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With the explosion of information, micro-blogging website Twitter was born. It is no exaggeration to describe Twitter's growth with the word "born". Twitter has grown from 0 to 66,000 since May 2006, when the number of Twitter users rose to 1.5 in December 2007. Another year, December 2008, Twitter's number of users reached 5 million. [1] The success of Twitter is a prerequisite for the ability to provide services to tens of millions of users at the same time and to deliver services faster. [2,3,4 ...

In the past, we have introduced some principles of software development, such as the 10 commandments of high quality code and the UNIX design principles described in the UNIX legend (next article). I believe that you can learn from middle school some knowledge of design principles, as I said in the "How Do I Recruit procedures", a good programmer usually consists of its operational skills, knowledge level, experience level and ability four aspects. Here I would like to talk about some of the principles of design, I think these things belong to the long-term experience summed up knowledge. These principles should be understood by every programmer. But...

In recent years, with the continuous innovation and development of the Internet industry, batch after group of websites or be eliminated or stand out, for those successful websites, most of them already exist nearly 10 or more than 10 years, in such a long period of development, in addition to the business facing the challenges, Technically, it's also a lot of challenges. The following selected Alexa rankings of the previous site (ranking up to April 21, 2012, by analyzing how they are technically coping with the challenges of business development process, to a deeper understanding of the development of the Internet industry in recent years. ...

Absrtact: 7 years ago, one of the ideas, the success of today's popular social network and microblogging service--twitter. Twitter now has more than 200 million monthly active subscribers, and about 500 million tweets are sent every day. 　　Behind all this is the support of a large number of open source projects. Twitter, known as the "Internet SMS Service", allows users to post no more than 140 tweets, the idea from Twitter's co-founder, Jack Dorsey, which was dubbed "the dumbest Ever" by analysts 7 years ago ...

The author of this article will introduce some of the leading cloud computing platforms and provide guidance on use cases that these cloud platforms can handle. Platform as a service (PaaS) is often considered to be one of the three major cloud computing service delivery models, and the other two are infrastructure, service and software. It accelerates cloud application development, provides managed infrastructure, simple and flexible resource allocation, and rich tools and services to help achieve efficient code and Run-time performance. However, the term hides the broad diversity of the cloud platform. Coarse look, windows&r ...

VMware suddenly released its first open source Paas--cloudfoundry this April. In the months since its release, the author has been concerned about its evolution and benefited from its architectural design, and felt the need to write to share it with you. This article will be divided into two parts: the first part mainly introduces the architecture design of Cloudfoundry, from the module that it contains, to the information flow of each part, how the modules coordinate and cooperate; The second part will be based on the first part, how to use Clou in your data center ...

Spark is a cluster computing platform originating from the Amplab of the University of California, Berkeley, which is a rare versatile player, based on memory computing, starting with multiple iterations, and eclectic data warehousing, streaming and graph computing paradigms. Spark is now the Apache Foundation's top open source project, with a huge community support, technology is gradually maturing, but to really put into production, but also need to undergo a lot of optimization. To shark, Spark streaming and related projects as the theme, Spark Summ ...

The architectural challenges behind the tumblr:150 of billions of months of browsing are the same as many emerging websites, where the famous light blogging service Tumblr is facing the bottleneck of the system architecture in the rapid development. 500 million times a day, peak 40,000 requests per second, 3TB of new data storage, more than 1000 servers, in this case how to ensure the smooth operation of the old system, smooth transition to the new system, Tumblr is facing enormous challenges. Tumblr was very typical of lamp applications. is currently evolving to a distributed service model based on SCA ...

Introduction: Embarrassing hundred years since the establishment of 2005, has been developed for more than 7 decades, and accumulated a large number of high-quality content and users, from an obscure station to grow into a solar PV tens of millions, become the Chinese community has a unique culture of entertainment sites, embarrassing hundred have their own unique operational strategy and means. Embarrassing encyclopedia is a user real embarrassing jokes on the theme of the Web site, the topic of easy leisure, at present in the young people are very popular. In the embarrassing encyclopedia can look at other people released embarrassing and share their personal experience or heard of rape, cups, grass eggs, interesting, not liking all kinds of situations ...

When developing internal and external applications, organizations are increasingly using open source code-which is reasonable. Using free pre-built components rather than writing your own code can significantly shorten application development time and improve the probability of software development success. 　　When developing applications, the development team can easily use hundreds of more open source libraries, frameworks and tools, and countless code from the Internet. However, open source code is risky-even the most widely recognized code base. No one can guarantee that the open source code will not have a bug, nor guarantee it in the development process with the enterprise should ...