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Original: From the hundreds of architectural chart of the construction of large-scale web site experience (above)Directory (?) [-] WikiPedia Technology Architecture Facebook Architecture Yahoo Mail Architecture Twitter technology architecture Google APP Engine Technology architecture Amazon Technology Architecture Technology architecture of Youku Postscript IntroductionIn recent times, through the contact with

program, runs in a Web browser.The computer program is placed in the browser.Why do you put it in a browser?Browsers worldwide, but not flexible;The computer program is flexible (much more user-interactive), but not universal.So put the computer program in the browser, in fact, the browser page has a high demand, like a program, the big, what to have.So, Angularjs is the "in the browser, what to have what" requirements to meet the tool (framework).2. Html:hypertext Markup LanguageHypertext:hype

code-stealing site.) After discovering a vulnerability in the function, a new version called "Mysql_real_escape_string" was created, but the old version was not replaced. So the current situation is like being in the cockpit and emitting two buttons with similar functions: One of the buttons is for lowering the landing gear and the other for safely lowering the landing gear. This is not only counterintuitive, it can even cause disaster. Although many people do not like PHP, PHP is still a large

Four Encyclopedia website (Baidu Encyclopedia, Search Encyclopedia, Wikipedia, Interactive encyclopedia, has been the release of the site outside the chain of the Holy Land, and after my website in the Encyclopedia of Continuous Practice and summary, and constantly edit the entry, to everyone summed up on the Wikipedia site hair outside the chain of difficulty: 1. Interactive encyclopedia most easily hair,

into a sequence of one or more sub-programs that have been compiled into machine code. (Wikipedia) Apl The APL is named in the "programming language (a programming Language)" (Iverson,kenneth e.,1962), which is an array programming language. It can work on multiple data arrays at the same time. It is an explanatory, interactive, and functional programming language. AutoIt It is free software and is an automated language fo

PHP function "mysql_escape_string". This function removes the malicious input request from the message before it is sent to the database. (Examples of malicious input include the e-mail address of a form requesting a user on a Web site, and the password of a hacker inserting a code-stealing site.) After discovering a vulnerability in the function, a new version called "Mysql_real_escape_string" was created, but the old version was not replaced. So the current situation is like being in the cock

FTP) in terms of transmission rate. This article describes how to use tsunami DUP. This file transfer scheme is a UDP/tcp hybrid acceleration file transfer protocol, it is designed to migrate large-scale data from Amazon EC2 to Amazon S3 (other powerful File Transfer and workflow acceleration solutions include aspera, mongodat, file catalyst, signiant, and attunity. Most of these products can be obtained from AWS marketplace ). AWS public Dataset AWS hosts a large number of public datasets for

At the Wikipedia conference held by Alexander RIA in Egypt, Wikipedia organizers said that a printed encyclopedia Based on Wikipedia would create an amazing record, and nearly 90000 authors will be signed by the book. ThisThis is a full-book encyclopedia to be published by bertelman in September this year, based on 25000 of the German version of Wikipedia.The mo

"fallback" segment:CACHE MANIFESTFALLBACK://offline.htmlNETWORK:*What the hell is this thing doing? First, consider a site that contains countless pages, such as Wikipedia. Of course you can't download the entire site, and you should not want to. But suppose you need to make some pages of your site available offline, how do you decide which pages to cache? So how: every page you visit on an assumed support offline

we don't want that.In addition, the Okapi BM25 also has a K1 parameter, which is used to adjust the rate of saturation changes. The value of the K1 parameter is typically between 1.2 and 2.0. The lower the value, the faster the saturation process. (meaning two of the above two documents have the same score, because they all contain a lot of "baseball" the word)The length of the field (Field-length normalization) of the document is normalized to the average length of all documents. This is usefu

Introduction in recent times, through contact with the massive data processing and search engine of many technologies, often see a lot of exquisite architecture diagram. In addition to every exclamation on the surface of each picture of the fine, more than the structure behind the hidden design ideas are amazed. Individuals these two days have been collecting the structure of the large web site design, one for feast, to understand the various types of large-scale Web site architecture and design

has a K1 parameter that regulates the rate at which the saturation changes. The value of the K1 parameter generally ranges from 1.2 to 2.0. The lower the number, the faster the saturation process. (meaning that the two top two documents have the same score, because they all contain a lot of "baseball" the word) The length of the field (Field-length normalization) converts the length of the document to the average length of all documents. This is useful for a single field collection (Single-fie

true even for social networking sites such as MySpace, Facebook and Photobucket. The best wikipedia Wikipedia encyclopedia, and only 4.6% of users will contribute their strength. The WEB 2.0 era has not come Hitwise, at the Web 2.0 conference in San Francisco in April this month, released a survey of 25 million users ' online records and 860,000 Web site traffic data. Hitwise's traffic-tracking data also s

SEOmoz can only be seo a single page to do the fourth. Before often see someone analysis Baidu Encyclopedia rankings good reason, I summed up the main there are the following: a strong internal chain, the launch of users often fine-tuning, web structure and a variety of label symbols practical. I do not deny that this is a good reason for Wikipedia rankings, but I would like to explain that these are not the point, take

this moment, but sometimes we don't want. In addition, Okapi BM25 also has an k1 parameter, which is used to adjust the rate of saturation variation. The value of k1 is generally between 1.2 and 2.0. The lower the value, the faster the saturation process. (It means that the two documents above have the same score because they both contain a large number of "Baseball" words) Field-length normalization normalize the length of a document to the average length of all documents. This is useful for s

Introduction in recent times, through contact with the massive data processing and search engine of many technologies, often see a lot of exquisite architecture diagram. In addition to every exclamation on the surface of each picture of the fine, more than the structure behind the hidden design ideas are amazed. Individuals these two days have been collecting the structure of the large web site design, one for feast, to understand the various types of large-scale Web site architecture and design

(uppercase E represents an HTML tag): 　　1. E 代表HTML标签。　　2. E#id 代表id属性。　　3. E.class 代表class属性。　　4. E[attr=foo] 代表某一个特定属性。　　5. E{foo} 代表标签包含的内容是foo。　　6. E>N 代表N是E的子元素。　　7. E+N 代表N是E的同级元素。　　8. E^N 代表N是E的上级元素。　　 Take a look at the example below. 　　p　　　　p#main.item　　　　a[href=http://wikipedia.org]{维基百科}　　　　div>p　　　　div+p　　　　p>span^div　　 The corresponding HTML code is: 　　 >>Id="Main"Class=The item">>Href="Http://wikipedia.org"> Wi