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Internet Cache Protocol
The Internet Cache Protocol (ICP) is a UDP-based protocol used for coordinating web caches. Its purpose is to find out the most appropriate location to retrieve a requested object in the situation where multiple caches are in use at a single site. The function of ICP is to use the caches as efficiently as possible, and to minimize the number of remote requests to the originating server. Operation Hierarchically, a queried cache can either be a parent or a sibling. Parents usually sit closer to the internet connection than the child. If a child cache cannot find an object, the query usually will be sent to the parent cache, which will fetch, cache, and pass on the request. Siblings are caches of equal hierarchical status, whose purpose is to distribute the load amongst the siblings. When a request comes into one cache in a cluster of siblings, ICP is used to query the siblings for the object being requested. If the sibling has the object, it will usually be transferred from there, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User Datagram Protocol
In computer networking, the User Datagram Protocol (UDP) is one of the core communication protocols of the Internet protocol suite used to send messages (transported as datagrams in packets) to other hosts on an Internet Protocol (IP) network. Within an IP network, UDP does not require prior communication to set up communication channels or data paths. UDP uses a simple connectionless communication model with a minimum of protocol mechanisms. UDP provides checksums for data integrity, and port numbers for addressing different functions at the source and destination of the datagram. It has no handshaking dialogues, and thus exposes the user's program to any unreliability of the underlying network; there is no guarantee of delivery, ordering, or duplicate protection. If error-correction facilities are needed at the network interface level, an application may instead use Transmission Control Protocol (TCP) or Stream Control Transmission Protocol (SCTP) which are designed for this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squid (software)
Squid is a caching and forwarding HTTP web proxy. It has a wide variety of uses, including speeding up a web server by caching repeated requests, caching web, DNS and other computer network lookups for a group of people sharing network resources, and aiding security by filtering traffic. Although primarily used for HTTP and FTP, Squid includes limited support for several other protocols including Internet Gopher, SSL, TLS and HTTPS. Squid does not support the SOCKS protocol, unlike Privoxy, with which Squid can be used in order to provide SOCKS support. Squid was originally designed to run as a daemon on Unix-like systems. A Windows port was maintained up to version 2.7. New versions available on Windows use the Cygwin environment. Squid is free software released under the GNU General Public License. History Squid was originally developed as the ''Harvest object cache'', part of the Harvest project at the University of Colorado Boulder. Further work on the program was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Coat Systems
__FORCETOC__ Blue Coat Systems, Inc., was a company that provided hardware, software, and services designed for cybersecurity and network management. In 2016, it was acquired by and folded into Symantec. In 2019 was, as part of Symantec Enterprise division, sold to Broadcom. The company was known as CacheFlow until 2002. The company had "a broad security portfolio including hardware, software and services." The company was best known for web gateway appliances that scan internet traffic for security threats, authenticate users and manage encrypted traffic, as well as products to monitor and filter employee internet activity. It also produced consumer products, such as parental control software. The company's products were initially sold to internet service providers, but later products were intended for large companies. History In March 1996, the company was founded as CacheFlow, Inc. in Redmond, Washington by Michael Malcolm, a computer scientist and professor at the University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Novell
Novell, Inc. was an American software and services company headquartered in Provo, Utah, that existed from 1980 until 2014. Its most significant product was the multi-platform network operating system known as Novell NetWare. Under the leadership of chief executive Ray Noorda, NetWare became the dominant form of personal computer networking during the second half of the 1980s and first half of the 1990s. At its high point, NetWare had a 63 percent share of the market for network operating systems and by the early 1990s there were over half a million NetWare-based networks installed worldwide encompassing more than 50 million users. Novell technology contributed to the emergence of local area networks, which displaced the dominant mainframe computing model and changed computing worldwide. Novell was the second-largest maker of software for personal computers, trailing only Microsoft Corporation, and became instrumental in making Utah Valley a focus for technology and software ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netscape Proxy Server
The Oracle iPlanet Web Proxy Server (OiWPS), formerly known as Sun Java System Web Proxy Server (SJSWPS), is a proxy server software developed by Sun Microsystems (since 2010, Oracle Corporation). Overview The Oracle iPlanet Web Proxy Server, is a popular HTTP/1.1 Proxy server software developed by Sun Microsystems. OiWPS 4.0 is widely used for proxying, caching, and filtering web content, boosting network security and performance, as well as to protect and secure, and load balance across, content servers. History Earlier known as ''Sun ONE Web Proxy server'', the Sun Java System Web Proxy Server 4.0 is a major rewrite of the older 3.x version of Sun's Proxy server, formerly known as ''Netscape Proxy Server''. The ''Netscape Proxy Server'' version 3.x was essentially a coupling between the Netscape browser client, responsible for talking to remote servers, and the Netscape web server 4.x, which in turn handled the duty of talking to a client. Support for multithreading was absen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traffic Server
The Apache Traffic Server (ATS) is a modular, high-performance reverse proxy and forward proxy server, generally comparable to Nginx and Squid. It was created by Inktomi, and distributed as a commercial product called the Inktomi Traffic Server, before Inktomi was acquired by Yahoo!. Shortly after Yahoo! released the TS source to Apache as an Apache Incubator project in July 2009, a guest editor on Yahoo!'s online publication ''OStatic'' stated that Yahoo! uses TS in production to serve more than 30 billion objects per day on sites like the Yahoo! homepage, and Yahoo! Sports, Mail and Finance. On April 21, 2010, the Apache board accepted Traffic Server as a TLP, graduating the project out of incubation. Current version The latest stable version is 9.0.1 and was released on April 16, 2021. The latest long-term support version is 8.1.1 and was released on December 2, 2020. , ATS is released in two stable versions, Version 8 is a long-term support version of ATS while version ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protocol (computing)
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined for that particular situation. The specified behavior is typically independent of how it is to be implemented. Communication protocols have to be agreed upon by the parties involved. To reach an agreement, a protocol may be developed into a technical standard. A programming language describes the same for computations, so there is a close analogy between protocols and programming languages: ''protocols are t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvest Project
Harvest was a DARPA funded research project by the Internet Research Task Force Research Group on Resource Discovery and hosted at the University of Colorado at Boulder which provided a web cache, developed standards such as the Internet Cache Protocol and Summary Object Interchange Format, and spawned many other technologies and software products. After the conclusion of the project in 1996, development of the Harvest object cache was continued with the University of Edinburgh releasing version 1.5. The open source squid cache and commercial NetCache were both based on the Harvest object cache. References External links Harvest: A Scalable, Customizable Discovery and Access SystemHarvest User's Manualharvest.transarc.com/ Wayback Machine The Wayback Machine is a digital archive of the World Wide Web founded by the Internet Archive, a nonprofit based in San Francisco, California. Created in 1996 and launched to the public in 2001, it allows the user to go "back in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DeleGate
Delegate or delegates may refer to: * Delegate, New South Wales, a town in Australia * Delegate (CLI), a computer programming technique * Delegate (American politics), a representative in any of various political organizations * Delegate (United States Congress), a non-voting member of the United States House of Representatives * Delegate Apostolic or nuncio, an ecclesiastical diplomat representing the Holy See * The Delegates The Delegates were a novelty song group who scored a hit record, "Convention '72". Creation The Delegates were the creation of Bob DeCarlo, morning disc jockey at KQV in Pittsburgh. Bob was approached by local record moguls Nick Cenci and Nick K ..., a 1970s novelty song group See also * Delegation (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
