Rails Change 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 ...

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 ...

"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 ...

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. ...

1. Dress a cow x program apes actually have no time to take care of their appearance, so, hair will be like Albert Einstein, head of a chicken coop, full of messy fluffy beauty, and to make people feel at any time from the hair to take out an egg feeling. There must be a lot of beard, so that the self-confidence and calm, if it is not short-sighted, once myopia, you should wear a bottle of the foundation of such thick glasses, give people feel a kind of scientific research workers style. and the Cow X program Ape is also a high demand for their own clothing, whether it is spring and summer, or day and night, windy and rainy, ...

The intermediary transaction SEO diagnoses Taobao guest stationmaster buys cloud host technology Hall This Sunday, Voofox is about to hold a our internal called "The foreigner Foreigner Foreigner Meeting" The "focus party","focus party" This word is our own creation, is "focus Group + Alpha Test party". 　　After the publication of the right announcement, these days attracted a lot of ringing, so I would like to explain a little bit here. One, focus party: Here is a ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. The impact of cloud computing on the software industry 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by stand-alone software are based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this pattern of development is completely changed, the resources used are no longer limited by physical resources, the use of memory can be based on the data Center server cluster ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. A． Cloud computing's impact on the software industry is 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by a stand-alone version of the software, is based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this development pattern completely changed, the use of resources are no longer limited by physical resources, the use of memory can be based on the data Center server cluster, database can ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. A． Cloud computing's impact on the software industry 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by a stand-alone version of the software, is based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this development pattern completely changed, the use of resources are no longer limited by physical resources, the use of memory can be based on the data Center Server group, the database can be through ...

"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 ...