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Pull Technology
Pull coding or client pull is a style of network communication where the initial request for data originates from the client, and then is responded to by the server. The reverse is known as push technology, where the server ''pushes'' data to clients. Pull requests form the foundation of network computing, where many clients request data from centralized servers. Pull is used extensively on the Internet for HTTP page requests from websites. A ''push'' can also be simulated using multiple ''pulls'' within a short amount of time. For example, when pulling POP3 email messages from a server, a client can make regular pull requests every few minutes. To the user, the email then appears to be pushed, as emails appear to arrive close to real-time. The tradeoff is this places a heavier load on both the server and network to function correctly. Most web feeds, such as RSS are technically pulled by the client. With RSS, the user's RSS reader polls the server periodically for new conten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Network
A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are made up of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies. The nodes of a computer network can include personal computers, servers, networking hardware, or other specialised or general-purpose hosts. They are identified by network addresses, and may have hostnames. Hostnames serve as memorable labels for the nodes, rarely changed after initial assignment. Network addresses serve for locating and identifying the nodes by communication protocols such as the Internet Protocol. Computer networks may be classified by many criteria, including the transmission medium used to carry signals, bandwidth, communications pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RSS (file Format)
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 specified ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Push Technology
Push technology or server push is a style of Internet-based communication where the request for a given transaction is initiated by the publisher or central server. It is contrasted with pull/get, where the request for the transmission of information is initiated by the receiver or client. Push services are often based on information preferences expressed in advance. It is called a publish/subscribe model. A client "subscribes" to various information "channels" provided by a server; whenever new content is available on one of those channels, the server pushes that information out to the client. Push is sometimes emulated with a polling technique, particularly under circumstances where a real push is not possible, such as sites with security policies that reject incoming HTTP/S requests. General use Synchronous conferencing and instant messaging are typical examples of push services. Chat messages and sometimes files are pushed to the user as soon as they are received by the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ITunes
iTunes () is a software program that acts as a media player, media library, mobile device management utility, and the client app for the iTunes Store. Developed by Apple Inc., it is used to purchase, play, download, and organize digital multimedia, on personal computers running the macOS and Windows operating systems, and can be used to rip songs from CDs, as well as play content with the use of dynamic, smart playlists. Options for sound optimizations exist, as well as ways to wirelessly share the iTunes library. Originally announced by Apple CEO Steve Jobs on January 9, 2001, iTunes' original and main focus was music, with a library offering organization and storage of Mac users' music collections. With the 2003 addition of the iTunes Store for purchasing and downloading digital music, and a version of the program for Windows, it became a ubiquitous tool for managing music and configuring other features on Apple's line of iPod media players, which extended to the iPh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Podcasts
Apple Podcasts (known as simply Podcasts in Apple operating systems) is an audio streaming service and media player application developed by Apple Inc. for playing podcasts. Apple began supporting podcasts with iTunes 4.9 released in June 2005 and launched its first standalone mobile app in 2012. The app was later pre-installed with iOS beginning October 2014. The Apple Podcasts directory features more than two million shows. Apple Podcasts is available on iOS, iPadOS, macOS, watchOS, tvOS, CarPlay, Microsoft Windows operating systems, and on Amazon Alexa devices. History Apple was an early promoter of podcasts (the term is a portmanteau of Apple's iPod music player and " broadcast"), and added playback functionality to iTunes 4.9 released in June 2005 and built a directory of shows in its iTunes Music Store, starting with 3,000 entries. In April 2020, Apple Podcasts surpassed one million shows. In June 2021, Apple launched the option for podcast creators to implement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podcasting
A podcast is a program made available in digital format for download over the Internet. For example, an episodic series of digital audio or video files that a user can download to a personal device to listen to at a time of their choosing. Streaming applications and podcasting services provide a convenient and integrated way to manage a personal consumption queue across many podcast sources and playback devices. There also exist podcast search engines, which help users find and share podcast episodes. A podcast series usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. Discussion and content within a podcast can range from carefully scripted to completely improvised. Podcasts combine elaborate and artistic sound production with thematic concerns ranging from scientific research to slice-of-life journalism. Many podcast series provide an associated website with links and show notes, guest biographies, transcripts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WebSub
WebSub (formerly PubSubHubbub) is an open protocol for distributed publish–subscribe communication on the Internet. Initially designed to extend the Atom (and RSS) protocols for data feeds, the protocol can be applied to any data type (e.g. HTML, text, pictures, audio, video) as long as it is accessible via HTTP. Its main purpose is to provide real-time notifications of changes, which improves upon the typical situation where a client periodically polls the feed server at some arbitrary interval. In this way, WebSub provides pushed HTTP notifications without requiring clients to spend resources on polling for changes. In October 2017, PubSubHubbub was renamed to WebSub for simplicity and clarity. , the WebSub protocol has been adopted by the W3C as a Recommendation. Protocol Under WebSub, there is an ecosystem of publishers, subscribers, and hubs. A subscriber first retrieves content from an HTTP resource ( URL) by requesting it from the webserver. The subscriber then inspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feed Aggregator
Feed or The Feed may refer to: Animal foodstuffs * Animal feed, food given to domestic animals in the course of animal husbandry ** Fodder, foodstuffs manufactured for animal consumption ** Forage, foodstuffs that animals gather themselves, such as by grazing * Compound feed, foodstuffs that are blended from various raw materials and additives Arts, entertainment, and media Comedy * A straight man who 'feeds' lines to the funny man in a comic dialogue Film * ''Feed'' (2005 film), a 2005 film directed by Brett Leonard * ''Feed'' (2017 film), a 2017 film directed by Tommy Bertelsen Literature * ''Feed'' (Anderson novel), a 2002 novel by M. T. Anderson * ''Feed'' (Grant novel), a 2010 novel by Seanan McGuire under the name "Mira Grant" Music * "Feed Us", 2007 song by Serj Tankian from ''Elect the Dead'' * "Feed", 2022 song by Demi Lovato from ''Holy Fvck'' Online media * ''Feed Magazine'', one of the earliest e-zines that relied entirely on its original online content * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Feeds
On the World Wide Web, a web feed (or news feed) is a data format used for providing users with frequently updated content. Content distributors ''syndicate'' a web feed, thereby allowing users to ''subscribe'' a channel to it by adding the feed resource address to a news aggregator client (also called a ''feed reader'' or a ''news reader''). Users typically subscribe to a feed by manually entering the URL of a feed or clicking a link in a web browser or by dragging the link from the web browser to the aggregator, thus "RSS and Atom files provide news updates from a website in a simple form for your computer." The kinds of content delivered by a web feed are typically (webpage content) or links to webpages and other kinds of digital media. Often when websites provide web feeds to notify users of content updates, they only include summaries in the web feed rather than the full content itself. Many news websites, weblogs, schools, and podcasters operate web feeds. As web feeds a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Request–response
In computer science, request–response or request–reply is one of the basic methods computers use to communicate with each other in a network, in which the first computer sends a ''request'' for some data and the second ''responds'' to the request. More specifically, it is a message exchange pattern in which a requestor sends a request message to a replier system, which receives and processes the request, ultimately returning a message in response. It is analogous to a telephone call, in which the caller must wait for the recipient to pick up before anything can be discussed. This is a simple but powerful messaging pattern which allows two applications to have a two-way conversation with one another over a channel; it is especially common in client–server architectures. For simplicity, this pattern is typically implemented in a purely synchronous fashion, as in web service calls over HTTP, which holds a connection open and waits until the response is delivered or the timeou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POP3
In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP version 3 (POP3) is the version in common use, and along with IMAP the most common protocols for email retrieval. Purpose The Post Office Protocol provides access via an Internet Protocol (IP) network for a user client application to a mailbox (''maildrop'') maintained on a mail server. The protocol supports download and delete operations for messages. POP3 clients connect, retrieve all messages, store them on the client computer, and finally delete them from the server. This design of POP and its procedures was driven by the need of users having only temporary Internet connections, such as dial-up access, allowing these users to retrieve e-mail when connected, and subsequently to view and manipulate the retrieved messages when offline. POP3 clients also have an option to leave mail on the server after download. By contr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Website
A website (also written as a web site) is a collection of web pages and related content that is identified by a common domain name and published on at least one web server. Examples of notable websites are Google Search, Google, Facebook, Amazon (website), Amazon, and Wikipedia. All publicly accessible websites collectively constitute the World Wide Web. There are also private websites that can only be accessed on a intranet, private network, such as a company's internal website for its employees. Websites are typically dedicated to a particular topic or purpose, such as news, education, commerce, entertainment or social networking. Hyperlinking between web pages guides the navigation of the site, which often starts with a home page. User (computing), Users can access websites on a range of devices, including desktop computer, desktops, laptops, tablet computer, tablets, and smartphones. The application software, app used on these devices is called a Web browser. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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