Distributed computing is a field of computer science that studies distributed systems. A distributed system is a system whose components are located on different networked computers, which communicate and coordinate their actions by passing messages to one another. The components interact with one another in order to achieve a common goal. Three significant characteristics of distributed systems are: concurrency of components, lack of a global clock, and independent failure of components. Examples of distributed systems vary from SOA-based systems to massively multiplayer online games to peer-to-peer applications.
A wireless LAN (WLAN) is a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home, school, computer laboratory, campus, office building etc. This gives users the ability to move around within the area and yet still be connected to the network. Through a gateway, a WLAN can also provide a connection to the wider Internet.
JXTA (Juxtapose) is an open-source peer-to-peer protocol specification begun by Sun Microsystems in 2001. The JXTA protocols are defined as a set of XML messages which allow any device connected to a network to exchange messages and collaborate independently of the underlying network topology.
BitTorrent is a communication protocol for peer-to-peer file sharing (P2P) which is used to distribute data and electronic files over the Internet.
WASTE is a peer-to-peer and friend-to-friend protocol and software application developed by Justin Frankel at Nullsoft in 2003 that features instant messaging, chat rooms, and file browsing/sharing capabilities. The name WASTE is a reference to Thomas Pynchon's novel The Crying of Lot 49. In the novel, W.A.S.T.E. is an underground postal service.
Ares Galaxy is an open source peer-to-peer file sharing application that uses its own decentralized supernode/leaf network. It was spun off from the gnutella network in 2002, and is hosted on SourceForge.net. Ares Galaxy has a simple, quick access interface with a built in audio/video viewer. The latest versions also support the BitTorrent protocol and Shoutcast radio stations.
An anonymous P2P communication system is a peer-to-peer distributed application in which the nodes, which are used to share resources, or participants are anonymous or pseudonymous. Anonymity of participants is usually achieved by special routing overlay networks that hide the physical location of each node from other participants.
A content delivery network or content distribution network (CDN) is a geographically distributed network of proxy servers and their data centers. The goal is to provide high availability and high performance by distributing the service spatially relative to end-users. CDNs serve a large portion of the Internet content today, including web objects, downloadable objects, applications, live streaming media, on-demand streaming media, and social media sites.
An overlay network is a computer network that is built on top of another network.
Private peer-to-peer (P2P) systems are peer-to-peer (P2P) systems that allow only mutually trusted peers to participate. This can be achieved by using a central server such as a Direct Connect hub to authenticate clients. Alternatively, users can exchange passwords or cryptographic keys with friends to form a decentralized network. Private peer-to-peer systems can be divided into friend-to-friend (F2F) and group-based systems. Friend-to-friend systems only allow connections between users who know one another, but may also provide automatic anonymous forwarding. Group-based systems allow any user to connect to any other, and thus they cannot grow in size without compromising their users' privacy. Some software, such as WASTE, can be configured to create either group-based or F2F networks.
Social peer-to-peer processes are interactions with a peer-to-peer dynamic. These peers can be humans or computers. Peer-to-peer (P2P) is a term that originated from the popular concept of the P2P distributed computer application architecture which partitions tasks or workloads between peers. This application structure was popularized by file sharing systems like Napster, the first of its kind in the late 1990s.
Peer-to-peer file sharing is the distribution and sharing of digital media using peer-to-peer (P2P) networking technology. P2P file sharing allows users to access media files such as books, music, movies, and games using a P2P software program that searches for other connected computers on a P2P network to locate the desired content. The nodes (peers) of such networks are end-user computers and distribution servers.
File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia, documents or electronic books. File sharing may be achieved in a number of ways. Common methods of storage, transmission and dispersion include manual sharing utilizing removable media, centralized servers on computer networks, World Wide Web-based hyperlinked documents, and the use of distributed peer-to-peer networking.
Founded in 2004 in New York City, Pando Networks was a managed peer-to-peer (P2P) media distribution company backed by Intel Capital, BRM Capital and Wheatley Partners. The company specialized in cloud distribution of games, video and software for publishers and media distributors and also operated a freemium consumer business for sending large files.
Voddler is a Stockholm, Sweden-based provider of a video-on-demand (VOD) platform and a streaming technology for over-the-top (OTT) streaming on the public Internet. In Scandinavia, Voddler is primarily known for the commercial VOD-service Voddler, which was launched in 2009. As a company, Voddler was founded in 2005 and developed its own streaming solution, called Vnet. Vnet is based on peer-to-peer (p2p), where all users contribute by streaming movies to each other, but, unlike traditional p2p, Vnet has a central administrator who decides which users that have access to which movies. Due to this exception, Vnet has been referred to as a "hybrid p2p distribution system", "walled garden p2p" or "controlled p2p". In addition to running the consumer service Voddler, the company Voddler also offers, since 2013, Vnet as a stand-alone technology for other streaming platforms. The service Bollyvod, a global VOD-service for Bollywood-content that Voddler built for the Indian movie industry, was released as a pilot in 2014.
IEEE 802.11s is Wireless LAN standard and an IEEE 802.11 amendment for mesh networking, defining how wireless devices can interconnect to create a WLAN mesh network, which may be used for relatively fixed topologies and wireless ad hoc networks. The IEEE 802.11s working group draws upon volunteers from university and industry to provide specifications and possible design solutions for wireless mesh networking. As a standard, the document was iterated and revised many times prior to finalization.
A blockchain, originally block chain, is a growing list of records, called blocks, which are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data.
