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Translation: Esri Lucas The first paper on the Spark framework published by Matei, from the University of California, AMP Lab, is limited to my English proficiency, so there must be a lot of mistakes in translation, please find the wrong direct contact with me, thanks. (in parentheses, the italic part is my own interpretation) Summary: MapReduce and its various variants, conducted on a commercial cluster on a large scale ...

Overview How to deal with high concurrency, large traffic? How to ensure data security and database throughput? How do I make data table changes under massive data? Doubanfs and DOUBANDB characteristics and technology implementation? During the QConBeijing2009, the Infoq Chinese station was fortunate enough to interview Hong Qiangning and discuss related topics. Personal Profile Hong Qiangning, graduated from Tsinghua University in 2002, is currently the chief architect of Beijing Watercress Interactive Technology Co., Ltd. Hong Qiangning and his technical team are committed to using technology to improve people's culture and quality of life ...

Elefant CMS 0.9.8-beta This version adds a dynamic navigation generator, fixes a glitch in the toolbar hover, cleans up the core library and fixes all the notification errors in the e_strict, installs a new http://www.aliyun.com/on the web Zixun/aggregation/12958.html "> Password strength check, and better load compatibility with other PHP frameworks automatically. Elefant is a re-imagined M ... in PHP.

This article describes how to build a virtual application pattern that implements the automatic extension of the http://www.aliyun.com/zixun/aggregation/12423.html "> virtual system Pattern Instance nodes." This technology utilizes virtual application mode policies, monitoring frameworks, and virtual system patterns to clone APIs. The virtual system mode (VSP) model defines the cloud workload as a middleware mirroring topology. The VSP middleware workload topology can have one or more virtual mirrors ...

"A precise measure would be worth 1000 experts ' opinion. "--grace Murray Hopper This remark should be the most incisive overview of A/b test. It concludes why many game studios want to use A/b test to assist in the design and development process--that is, not stopping to guess what's going to work, but really figuring out the result. Anyone who has experienced the design process should know that there are better ways to make these decisions. This approach is to use the real data provided by the player in A/b test. Ab-test (from ...)

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall This is the latest Web Development toolkit that Mashable collects, including drag-and-drop Web application creation tools, code libraries, project management, test programs, and frameworks that support a variety of programming languages, from Ajax to Ruby to Pytho N。 　　This is the second part. 　　Reference and Data Cofundos-a platform to discuss open source software for investment. Mac Yenta-...

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology lobby business site in the design and development process, products before the end of the line, after the day of operation, the website after the revision and so on, all need to test the work, testing with the business of Business-to-business Web site all the process, all the time, the following to briefly introduce, 　　The following combination of Xuejiang I work the actual situation, to introduce the specific content of the website of business-to-business testing, said the wrong, welcome everyone to Pat Bricks. 1 The design stage of Business-to-business website Test Designer in the design of a good page effect chart ...

1. Appium Official website: Http://appium.io/Appium is an open source automation testing framework, which is mainly used for native mobile applications or hybrid mobile applications. 　　Appium uses Webdriver:json wire Kyoto to drive iOS apps and Android apps. Note: Webdriver is a selenium based automated test class library that is not running in the browser Javas ...

"Editor's note" If you think the advantage of open source software is free and doctrine, then you are wrong, in today's software market, open source projects more and more dazzling, the choice of open source software is the biggest advantage is low risk, product transparency, industry adaptability and so on, but in the open source project area really influential enterprises, It is absolutely the enterprise that contributes the most code to this project. Network name for the architect of the blogger Li Qiang summed up the worthy attention of the 10 open source projects, are very valuable, the following is the original: 1. Appium official website: http://appiu ...

The intermediary transaction SEO diagnose Taobao guest Cloud host technology hall as SEO optimization stationmaster, a lot of work is our people can not complete, such as the relevant SEO data statistics, and in the SEO optimization technology, the use of its own optimization tools is a technology range, the tool itself can also achieve a certain SEO tasks, 　　So we need to use some SEO optimization tools to help us do a better job. In this article, I will discuss the validation of XML sitemap, bulk HTTP header response Check, check the International Web page speed ...