Ruby State Machine

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 ...

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 Serengeti, there are two most important and most critical functions: one is virtual machine management and the other is cluster software installation and configuration management. The virtual machine management is to create and manage the required virtual machines for a Hadoop cluster in vCenter. Cluster software installation and configuration management is to install Hadoop related components (including Zookeeper, Hadoop, Hive, Pig, etc.) on the installed virtual machine of the operating system, and update the configuration files like Namenode / Jobtracker / Zookeeper node ...

Sacrifice Kings Wang: The King of Kings in the 2003, the Emperor of the death, died, A.D. 2007, King of Kings 2, the same year, King of Kings 3 rebirth. The way of heaven, the loss of more than enough to fill. Transmigration, Endless. To the death of the same, to update students, harmonious, hundred waste can be hing.　　A life, also bitter and sweet.　　Phoenix Nirvana, no thought. Core Guide: March 1999, the first "King of Kings" server set up in Taiwan, the same year in July, "King of Kings" officially sold in Taiwan operations. The inflection point of King of Kings appeared in 2002, in many days ...

"Editor's note" Vidar Hokstad is very experienced in Docker use, especially in the absence of data loss, the use of Docker to create a repeatable build on the experience, in this blog, he summed up the development of the Docker container 8 modes. Docker is now my favorite tool, and in this article I will outline some of the patterns that recur during my use of Docker. I do not expect them to bring you many surprises, but I hope that these can be useful to you, I am very willing to communicate with you in the use of ...

See how I discovered the Github Enterprise Edition SQL Injection Vulnerability and got a $ 5,000 bounty. GitHub Enterprise Edition software is a commercial application designed for corporate groups to deploy on-premise development services. Github Enterprise Edition integrates in a standard OVF format, is published as a virtual machine (VM) image and can be downloaded from the enterprise.github.com web site to download a 45-day trial version and deploy it in any virtual machine environment. By downloading its beta software for analysis, it took me a week to find out what was there ...

About the Internet of things (Internet of Things, abbreviated IoT) is an internet-based, traditional telecommunications network, such as information carrier, so that all can be independently addressed common physical objects to achieve interconnection network. The internet of Things is generally wireless network, since everyone around the equipment can reach 1000 to 5,000, so the Internet may have to contain 500 trillion to 1000 trillion objects, in the Internet of things, everyone can use electronic tags to connect real objects online, can find out their specific location on the Internet of things. Pass STH.

In recent years, there are many industry phenomena and marketing trends, are related to nostalgia. For example, in the film market, from "Chinese partners", "Youth", "Small Time" to this year's "You", and "Youth memory" related. To pay for this, is the current "whenever", "" the crowd, and even some "", the reason for these consumer groups will begin to nostalgia, because the two generations of people into the life of the high-pressure period: there is a small old, also mortgage, for cars, jobs, promotions, compare each other ... Entangled into an invisible high-voltage net, they were crushed to the air. Only ...

The design and realization of warden frame in Cloud Foundry Nanjing University Xu Yubin the Cloud framework used in product foundry warden at platform-service level is introduced. Cloud Foundry is a platform as a service product, the user through Cloud Foundry provides command-line tools to deploy their completed projects to Cloud foundry above, without the need to modify the project, which simplifies the deployment process, reduce ...