Ruby On Rails Query

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 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 ...

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 ...

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 ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall [the core hint] embarrassing hundred from 2005 to set up, has developed more than 7 years, has accumulated the massive quality content and the user, from an obscure station growth for the solar PV tens of millions, becomes the Chinese community has the unique culture entertainment website, 　　Embarrassing hundred has its 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 posted embarrassing and share their own pro ...

In this very complicated information age of the Internet, we have learned how to use the powerful tool of search engine to find the target information. For example, you can search for Valentine's Day on Google to find a girlfriend, and you will also look for a regular Cosmetic medical institutions (although a large part of advertising liar). So if your own website system needs to enable users to search for some important information, and can be structured to show to the user, the following nine Java search engine framework to share may be able to help you. 1, Java full-text search lead ...

Want to be the most cow programmer? The following points will help you achieve this goal. Tip 1 to approach instead of memory a programmer friend of mine often tells me how helpful it is to remember that more than 200 C + + functions are available. "I never have to look up the definition of a function, so I can program 50% faster than other programmers." "he said proudly. But what is the result? Didn't he know that the compiler's code completion could save a lot of time finding functions and input functions, and that when C # was released, his efforts on the memory function were in vain. Of course, in programming to function ...

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 ...

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 ...