Rails Create Table

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 ...

Absrtact: The hacker Marathon is the programmer's American Idol, very popular. Participating in the hacking marathon, in addition to keen to delve into the technology of software engineers, as well as the team from the VC company. The competition organizers will provide a free diet.     The hacker marathon is a few hackers marathon is the programmer's "American Idol", very popular.     Participating in the hacking marathon, in addition to keen to delve into the technology of software engineers, as well as the team from the VC company. The Competition party will ...

"Editor's note" Shopify is a provider of online shop solutions company, the number of shops currently serving more than 100,000 (Tesla is also its users). The main frame of the website is Ruby on rails,1700 kernel and 6TB RAM, which can respond to 8,000 user requests per second. In order to expand and manage the business more easily, Shopify began to use Docker and CoreOS technology, Shopify software engineer Graeme Johnson will write a series of articles to share their experience, this article is the department ...

There seems to be a plot in a thriller that says, "It's easy ... It's so easy. "And then all things began to fall apart. When I started testing the top-tier Java cloud Computing in the market, I found that the episode was repeating itself. Enterprise developers need to be more concerned about these possibilities than others. Ordinary computer users get excited when there are new scenarios in cloud computing that make life easier. They will use cloud-based emails and if the emails are lost they can only shrug their shoulders because the electrons ...

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 ...

Take music and travel with music! Maybe one day, when we are tired of the hustle and bustle of the city, let go of everything, only take the mood to travel: from the Lijiang of the tick drops to Dali Cangshan Lake, or in Litang listen to Tibetan songs looking for Cang Yang Gyatso that pure and miserable love, or to embark on a shabby green train, accompanied by the clang of the sound of the rails, out of the small harmonica ...... But we are busy in this complex city, sleep, Daze, listen to music, giggle away from us more and more; occasional petty bourgeoisie may just be a manifestation of self-deception; great pressure to survive

"Life in hell is about to begin.　　"Liu Nan, a senior high school student in Tianjin, said.　　Liu Nan is about to take part in the exam, is a "China's first Test," said the college entrance examination. This is a large number of participants in the same game, according to incomplete statistics, in just the end of the 2009 National College Entrance Examination, examinee up to 10.2 million people.　　Because the competition is too intense, every year July, the media often dubbed "the Army over the log Bridge" to describe. In order to have a good "log Bridge", now or in the holiday, Liu Nan has started her "preparation for life": 6 o'clock in the morning every day to get up, 7 o'clock to school ...

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 ...