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Website Tracking
Website tracking refers to the act of archiving existing websites and tracking changes to the website over time. Many applications exist for website tracking which can be applied to many different purposes. Website monitoring Website monitoring allows interested parties to track the health of a website or web application. A software program can periodically check to see if a website is down, if broken links exist, or if errors have occurred on specific pages. For example, a web developer who hosts and maintains a website for a customer may want to be notified instantly if the site goes down or if a web application returns an error. Monitoring the web is a critical component for marketing, sales and product support strategies. Over the past decade transactions on the web have significantly multiplied the use of dynamic web page, secure web sites and integrated search capabilities which requires tracking of user behavior on web sites. Website change detection Website change ...
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Website Monitoring
Website monitoring is the process of testing and verifying that end-users can interact with a website or web application as expected. Website monitoring are often used by businesses to ensure website uptime, performance, and functionality is as expected. Website monitoring companies provide organizations the ability to consistently monitor a website or server function and observe how it responds. The monitoring is often conducted from several locations around the world to a specific website, or server, to detect issues related to general Internet latency, and network hop issues, and to prevent false positives caused by local or inter-connect problems. Monitoring companies generally report on these tests in a variety of reports, charts, and graphs. When an error is detected monitoring services send out alerts via email, SMS, phone, SNMP trap, a pager that may include diagnostic information, such as a network traceroute, code capture of a web page's HTML file, a screenshot of a we ...
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Dynamic Web Page
A server-side dynamic web page is a web page whose construction is controlled by an application server processing server-side scripts. In server-side scripting, parameters determine how the assembly of every new web page proceeds, and including the setting up of more client-side processing. A client-side dynamic web page processes the web page using JavaScript running in the browser as it loads. JavaScript can interact with the page via Document Object Model, or DOM, to query page state and modify it. Even though a web page can be dynamic on the client-side, it can still be hosted on a static hosting service such as GitHub Pages or Amazon S3 as long as there isn't any server-side code included. A dynamic web page is then reloaded by the user or by a computer program to change some variable content. The updating information could come from the server, or from changes made to that page's DOM. This may or may not truncate the browsing history or create a saved version to go b ...
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Web Crawler
A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (''web spidering''). Web search engines and some other websites use Web crawling or spidering software to update their web content or indices of other sites' web content. Web crawlers copy pages for processing by a search engine, which indexes the downloaded pages so that users can search more efficiently. Crawlers consume resources on visited systems and often visit sites unprompted. Issues of schedule, load, and "politeness" come into play when large collections of pages are accessed. Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request bots to index only parts of a website, or nothing at all. The number of Internet pages is extremely large; ev ...
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Event-driven Programming
In computer programming, event-driven programming is a programming paradigm in which the flow of the program is determined by events such as user actions (mouse clicks, key presses), sensor outputs, or message passing from other programs or threads. Event-driven programming is the dominant paradigm used in graphical user interfaces and other applications (e.g., JavaScript web applications) that are centered on performing certain actions in response to user input. This is also true of programming for device drivers (e.g., P in USB device driver stacks). In an event-driven application, there is generally a main loop that listens for events and then triggers a callback function when one of those events is detected. In embedded systems, the same may be achieved using hardware interrupts instead of a constantly running main loop. Event-driven programs can be written in any programming language, although the task is easier in languages that provide high-level abstractions, such a ...
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Screen Scraping
Data scraping is a technique where a computer program extracts data from human-readable output coming from another program. Description Normally, data transfer between programs is accomplished using data structures suited for automated processing by computers, not people. Such interchange formats and protocols are typically rigidly structured, well-documented, easily parsed, and minimize ambiguity. Very often, these transmissions are not human-readable at all. Thus, the key element that distinguishes data scraping from regular parsing is that the output being scraped is intended for display to an end-user, rather than as an input to another program. It is therefore usually neither documented nor structured for convenient parsing. Data scraping often involves ignoring binary data (usually images or multimedia data), display formatting, redundant labels, superfluous commentary, and other information which is either irrelevant or hinders automated processing. Data scraping is ...
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Link Rot
Link rot (also called link death, link breaking, or reference rot) is the phenomenon of hyperlinks tending over time to cease to point to their originally targeted file, web page, or server due to that resource being relocated to a new address or becoming permanently unavailable. A link that no longer points to its target, often called a ''broken'' or ''dead'' link (or sometimes ''orphan'' link), is a specific form of dangling pointer. The rate of link rot is a subject of study and research due to its significance to the internet's ability to preserve information. Estimates of that rate vary dramatically between studies. Prevalence A number of studies have examined the prevalence of link rot within the World Wide Web, in academic literature that uses URLs to cite web content, and within digital libraries. A 2003 study found that on the Web, about one link out of every 200 broke each week, suggesting a half-life of 138 weeks. This rate was largely confirmed by a 2016–2017 ...
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Media Monitoring Service
A media monitoring service, a press clipping service or a clipping service as known in earlier times, provides clients with copies of media content, which is of specific interest to them and subject to changing demand; what they provide may include documentation, content, analysis, or editorial opinion, specifically or widely. These services tend to specialize their coverage by subject, industry, size, geography, publication, journalist, or editor. The printed sources, which could be readily monitored, greatly expanded with the advent of telegraphy and submarine cables in the mid- to late-19th century; the various types of media now available proliferated in the 20th century, with the development of radio, television, the photocopier and the World Wide Web. Though media monitoring is generally used for capturing content or editorial opinion, it also may be used to capture advertising content. Media monitoring services have been variously termed over time, as new players entered the ...
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Google Alerts
Google Alerts is a content change detection and notification service, offered by Google. The service sends emails to the user when it finds new results—such as web pages, newspaper articles, blogs, or scientific research—that match the user's search term(s). In 2003, Google launched Google Alerts, which were the result of Naga Kataru's efforts. His name is on the three patents for Google Alerts. Google reported the system was not functioning properly as of 2013: "we're having some issues with Alerts not being as comprehensive as we'd like". However, the service is still operational and completely accessible around the world. See also * List of Google products The following is a list of products, services, and apps provided by Google. Active, soon-to-be discontinued, and discontinued products, services, tools, hardware, and other applications are broken out into designated sections. Web-based produc ... * Media monitoring service References External links * ...
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RSS Feed
RSS ( RDF Site Summary or Really Simple Syndication) is a web feed that allows users and applications to access updates to websites in a standardized, computer-readable format. Subscribing to RSS feeds can allow a user to keep track of many different websites in a single news aggregator, which constantly monitor sites for new content, removing the need for the user to manually check them. News aggregators (or "RSS readers") can be built into a browser, installed on a desktop computer, or installed on a mobile device. Websites usually use RSS feeds to publish frequently updated information, such as blog entries, news headlines, episodes of audio and video series, or for distributing podcasts. An RSS document (called "feed", "web feed","Web feeds , RSS , The Guardian , guardian.co.uk", ''The Guardian'', London, 2008, webpage: GuardianUK-webfeeds. or "channel") includes full or summarized text, and metadata, like publishing date and author's name. RSS formats are specifi ...
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Internet Archive
The Internet Archive is an American digital library with the stated mission of "universal access to all knowledge". It provides free public access to collections of digitized materials, including websites, software applications/games, music, movies/videos, moving images, and millions of books. In addition to its archiving function, the Archive is an activist organization, advocating a free and open Internet. , the Internet Archive holds over 35 million books and texts, 8.5 million movies, videos and TV shows, 894 thousand software programs, 14 million audio files, 4.4 million images, 2.4 million TV clips, 241 thousand concerts, and over 734 billion web pages in the Wayback Machine. The Internet Archive allows the public to upload and download digital material to its data cluster, but the bulk of its data is collected automatically by its web crawlers, which work to preserve as much of the public web as possible. Its web archiving, web archive, the Wayback Machine, contains hu ...
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Web Archiving
Web archiving is the process of collecting portions of the World Wide Web to ensure the information is preserved in an archive for future researchers, historians, and the public. Web archivists typically employ web crawlers for automated capture due to the massive size and amount of information on the Web. The largest web archiving organization based on a bulk crawling approach is the Wayback Machine, which strives to maintain an archive of the entire Web. The growing portion of human culture created and recorded on the web makes it inevitable that more and more libraries and archives will have to face the challenges of web archiving. National libraries, national archives and various consortia of organizations are also involved in archiving culturally important Web content. Commercial web archiving software and services are also available to organizations who need to archive their own web content for corporate heritage, regulatory, or legal purposes. History and development W ...
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Network Management
Network management is the process of administering and managing computer networks. Services provided by this discipline include fault analysis, performance management, provisioning of networks and maintaining quality of service. Network management software is used by network administrators to help perform these functions. Technologies A small number of accessory methods exist to support network and network device management. Network management allows IT professionals to monitor network components within large network area. Access methods include the SNMP, command-line interface (CLI), custom XML, CMIP, Windows Management Instrumentation (WMI), Transaction Language 1 (TL1), CORBA, NETCONF, and the Java Management Extensions (JMX). Schemas include the Structure of Management Information (SMI), WBEM, the Common Information Model (CIM Schema), and MTOSI amongst others. See also * Application service management * Business service management * Capacity management * Comp ...
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