Rails Relationships

The rails framework was first proposed in July 2004, and its developers were 26-year-old Danish http://www.aliyun.com/zixun/aggregation/16482.html ">david Heinemeier Hansson. Unlike existing complex web development frameworks, rails is a more realistic and efficient web development framework. Rails combines the benefits of the PHP system (rapid development) with the benefits of the Java system ...

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 ...

Editor's note: Data Center 2013: Hardware refactoring and Software definition report has a big impact. We have been paying close attention to the launch of the Data Center 2014 technical Report. In a communication with the author of the report, Zhang Guangbin, a senior expert in the data center, who is currently in business, he says it will take some time to launch. Fortunately, today's big number nets, Zhangguangbin just issued a good fifth chapter, mainly introduces Facebook's data center practice, the establishment of Open Computing Project (OCP) and its main work results. Special share. The following is the text: confidentiality is the data ...

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...

After creating a good relationship with the customer, one should consider how to maintain the relationship with the customer, which is not an easy task, of course. However, this is extremely important for the survival and growth of the business. In order to maintain these delicate relationship, CRM system is essential. Open source world, will not leave CRM. Let's take a quick look at these top 5 open source CRM systems. This article is not a simple checklist. Each of the CRM systems listed highlights their excellence and strength. What is CRM? CRM is user relationship ...

In the late 90, China appeared in the first batch of electric sites, it was a very distant era, it is said that workers can also be divided into units of the House, but at that time the electricity quotient is only a few front-line network workers of the test; In 2003, the dotcom bubble burst rapidly after a brief period of gorgeous The electric business industry in China is also almost doomed to extinction; and through the survival crisis, China's electricity business ushered in the development of the Golden decade, especially after 2012 years, the Chinese electric business is showing a blowout, not only the expansion of pure electricity business, and the traditional retail also rely on the model of the second industry upgrade, the fact ...

The first chapter: introduction of the portal, BBS, network community, personal blog, SNS, micro-blog, "Light blogging" has become a popular trend of internet development in the past 2011 years. This new network service, like microblogging, blog, is committed to providing users with the content to express their platform. 　　"Light Blog" not only has the expression of the blog and professionalism, but also has a simple and convenient microblogging and social communication skills. This article is from the development history of micro-blogging at home and abroad, Brief introduction of the concept of light blog, domestic and foreign well-known light blog providers and other angles to compare the narrative,...

"5" Data flow and control flow in the previous article, Twitter has two main points to watch, caching and Message Queuing. The role of Message Queuing is to "isolate user requests and related operations in order to flatten traffic peaks (move operations out of the synchronous request cycle, amortize load over time)". By letting the Apache process empty loop, quickly accept ...