翻訳と辞書 Words near each other ・ Change and Development Party ・ Change at Oglethorpe ・ Change Becomes Us ・ Change blindness ・ Change Brazil ・ Change Charagua ・ Change Clothes ・ Change Colours ・ Change Congress ・ Change control ・ Change control board ・ Change data capture ・ Change deafness ・ Change detection ・ Change detection (GIS) ・ Change detection and notification ・ Change Everything ・ Change for a Dollar ・ Change for Balance Productions ・ Change for the Children Foundation ・ Change from above ・ Change from below ・ Change Game ・ Change Giver ・ Change Has Come ・ Change Healthcare ・ Change impact analysis ・ Change in personality over a lifetime ・ Change Is a Sound ・ Change Is the Only Constant Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Change detection and notification ： ウィキペディア英語版 Change detection and notification Change detection and notification (CDN) refers to automatic detection of changes made to World Wide Web pages and notification to interested users by email or other means. Whereas search engines are designed to find web pages, CDN systems are designed to monitor changes to web pages. Before change detection and notification, it was necessary for users to manually check for web page changes, either by revisiting web sites or periodically searching again. Efficient and effective change detection and notification is hampered by the fact that most servers do not accurately track content changes through Last-Modified or ETag headers. ==History== In 1996, NetMind developed the first change detection and notification tool, known as Mind-it, which ran for six years. This spawned new services such as ChangeDetection (1999), ChangeDetect (2002) and Google Alerts (2004). Historically, change polling has been done either by a server which sent email notifications or a desktop program which audibly alerted the user to a change. More recent services such as OnWebChange (2009) also offer notifications directly to mobile devices and webhooks (HTTP callbacks) for application integration. The prevalence of cloud computing and smartphones is changing the CDN market, namely how polling is done and how notifications are sent. A mobile CDN device with a cloud back end does not suffer from limited bandwidth, storage or processing power, and notifications are delivered to wherever the device is. One such service is dasPing (2011). Monitored content can include text, documents, scripting and graphical elements of web content. Visualping (2013) detects changes by comparing visual elements from screen shots. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Change detection and notification」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.