Concurrent Requests

"Guide" Xu Hanbin has been in Alibaba and Tencent engaged in more than 4 years of technical research and development work, responsible for the daily request over billion web system upgrades and refactoring, at present in Xiaoman technology entrepreneurship, engaged in SaaS service technology construction. The electric dealer's second kill and buys, to us, is not a strange thing. However, from a technical standpoint, this is a great test for the web system. When a web system receives tens or even more requests in a second, system optimization and stability are critical. This time we will focus on the second kill and snapping of the technology implementation and ...

Absrtact: Another half month in 2013, the Spring Festival is coming, every year the people who work overseas will be worried about booking tickets. In particular, online booking, 12306 to provide the online booking system will have a variety of views, from last year's Spring festival, the Ministry of Railways launched 12306 websites, another half month on the 2013 Spring Festival is coming, every year the people will be because of the ticket booking and worry. In particular, online booking, 12306 to provide online booking system will have a variety of views, from last year's Spring festival, the Ministry of Railways launched 12306 websites, the implementation of the network real-name purchase tickets, each ...

As a powerful front-end framework, Dojo can make it easy for developers to meet these challenges. This article will use Dojo as a tool to describe in detail how to deal with the Ajax requests of different http://www.aliyun.com/zixun/aggregation/12445.html "> Business requirements. Before reading this article, you need to have the following knowledge: Ajax technology: Ajax English full name is: Asynchronous Javas ...

With the rise of internet web2.0 websites, the relational database has become a very hot new field, the development of the non relational database products is very rapid. 　　But the traditional relational database in dealing with web2.0 website, especially the super large-scale and high concurrent SNS type web2.0 pure dynamic website already appeared to be powerless, has exposed many insurmountable problems, for example: 1, high configured--to the database higher concurrent reads and writes the demand WEB2.0 website to be based on user personalized information to generate real-time dynamic ...

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 ...

We have recently upgraded our Windows http://www.aliyun.com/zixun/aggregation/13357.html >azure Web site and enabled the IIS8 Dynamic IP restriction module. Now, developers can enable and configure Dynamic IP throttling (or DIPR) for their web sites. You can view a complete overview of this IIS8 feature through the following links: Http://www.iis.net/le ...

Intermediary transaction SEO diagnosis Taobao Guest Cloud mainframe technology hall with the advent of the 11 long holiday, everyone to the Ministry of Railways 12306 of the discussion again. This article (original) from 12306 website extension to the site performance of a lot of discussion, for entrepreneurs and technology enthusiasts have a strong reference. 　　The author Chenhao (Weibo) has 14 years of experience in software development, 8 years of project and team management experience. 12306.cn website Hung, was scolded by the people all over the country. I've been here for two days.

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall because of the popular search engine, web crawler has become a very popular network technology, in addition to doing search Google,yahoo, Microsoft, Baidu, almost every large portal site has its own search engine, big and small call out the name of dozens of species, 　　There are a variety of unknown thousands of tens of thousands of, for a content-driven Web site, by the patronage of web crawler is inevitable. Some intelligent search engine crawler Crawl frequency is more reasonable, to the website resource consumption ...

The author Marc Fasel is a senior advisor, architect, http://www.aliyun.com/zixun/aggregation/6434.html > software developer. He has 18 years of experience building large, high-performance enterprise apps. In this article, he node.js the test process, the results, the conclusions, and the performance difference between the two by doing a test (performance test on the app and Java Server app).

Web site performance is an objective indicator, can be reflected in response time, throughput, concurrency, performance counters and other technical indicators. 1. Performance Test Indicator 1.1 response time refers to the time that the application takes to perform an operation, from the time it takes to send the request to the final receipt of the response data. The following is a list of common operational response schedules for the system. Operation Response time Open a website a few seconds database query a record (has index) more than 10 milliseconds machine ...