Ruby Each With Index

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. ...

"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 ...

Here is a translation of the Redis Official document "A fifteen minute introduction to Redis data Types", as the title says, The purpose of this article is to allow a beginner to have an understanding of the Redis data structure through 15 minutes of simple learning. Redis is a kind of "key/value" type data distributed NoSQL database system, characterized by high-performance, persistent storage, to adapt to high concurrent application scenarios. It started late, developed rapidly, has been many ...

In our daily life, we are inseparable from the application of position recognition class. Apps like Foursquare and Facebook help us share our current location (or the sights we're visiting) with our family and friends. Apps like Google Local help us find out what services or businesses we need around our current location. So, if we need to find a café that's closest to us, we can get a quick suggestion via Google Local and start right away. This not only greatly facilitates the daily life, ...

The intermediary transaction SEO diagnoses Taobao guest cloud host Technology Hall SEO is the search engine Angel Guide, is lets the website and the search engine communicate the medium, only then the SEO can let the search engine understand language and the search engine communication, tells the search engine this is what, which is more important. However, if you take the search engine as SB, then you are a SB, using cheating means, black chain even set up competition hand low-level SEO let too many formal stations are implicated. So, low-level SEO is the industry black Sheep, garbage station group harm has been, do not do a by deception ...

HBase terms in this article: column-oriented: Row column Group: Column families Column: Column unit: Cell Understanding HBase (an Open-source Google bigtable practical application) The biggest difficulty is what is HBase's data structure concept? First HBase is different from the general relational database, which is a database suitable for unstructured data storage. Another difference is that HBase is based on columns rather than on rows. Goo ...

Now almost any application, such as a website, a web app and a mobile app, needs a picture display function, which is very important for the picture function from the bottom up. Must have a forward-looking planning picture server, picture upload and download speed is of crucial importance, of course, this is not to say that it is to engage in a very NB architecture, at least with some scalability and stability. Although all kinds of architecture design, I am here to talk about some of my personal ideas. For the picture server IO is undoubtedly the most serious resource consumption, for web applications need to picture service ...

The intermediary transaction SEO diagnoses Taobao guest cloud host technology Hall from the writer, to the magazine founder, then to the director. In the business judgment system, Guo's every identity is successful. 　　Guo knows how to run his own advantages, how to start a magazine from a famous writer, with the advantage of his audience, and then make one of China's most successful series of commercial films. 　　Guo knows what his audience wants, and he knows what kind of products to build for his audience. His products, called "Youth" Guo is very clear about the taste of the audience ...

Summary: Data analysis Framework (traditional data analysis framework, large data analysis framework) medical large data has all the features mentioned in the first section. At the same time that large data brings with it a variety of advantages, the wide variety of features that result from the traditional data processing data analysis Framework (traditional data analysis framework, large data analysis framework) medical large data have all the features mentioned in the first section. While the medical data brings various advantages, large data brings with it various characteristics, which make the traditional data processing and analysis methods and software stretched ...

This article, formerly known as "Don t use Hadoop when your data isn ' t", came from Chris Stucchio, a researcher with years of experience, and a postdoctoral fellow at the Crown Institute of New York University, who worked as a high-frequency trading platform, and as CTO of a start-up company, More accustomed to call themselves a statistical scholar.   　　By the right, he is now starting his own business, providing data analysis, recommended optimization consulting services, his mail is: stucchio@gmail.com. "You ...