Mirror sites or mirrors are replicas of other websites. The concept of mirroring applies to network services accessible through any protocol, such as HTTP or FTP. Such sites have different URLs than the original site, but host identical or near-identical content.[1] Mirror sites are often located in a different geographic region than the original, or upstream site. The purpose of mirrors is to reduce network traffic, improve access speed, ensure availability of the original site for technical[2] or political reasons,[3] or provide a real-time backup of the original site.[4][5][6] Mirror sites are particularly important in developing countries, where internet access may be slower or less reliable.[7]
Mirror sites were heavily used on the early internet, when most users accessed through dialup and the Internet backbone had much lower bandwidth than today, making a geographically-localized mirror network a worthwhile benefit. Download archives such as Info-Mac, Tucows and CPAN maintained worldwide networks mirroring their content accessible over HTTP or anonymous FTP. Some of these networks, such as Info-Mac or Tucows are no longer active or have removed their mirrored download sections, but some like CPAN or the Debian package mirrors are still active in 2023.[8] Debian removed FTP access to its mirrors in 2017 because of declining use and the relative stagnation of the FTP protocol, mentioning FTP servers' lack of support for techniques such as caching and load balancing that are available to HTTP.[9] Modern mirrors support HTTPS and IPv6 along with IPv4.[10]
On occasion, some mirrors may choose not to replicate the entire contents of the upstream server because of technical constraints, or selecting only a subset relevant to their purpose, such as software written in a particular programming language, runnable on a single computer platform, or written by one author. These sites are called partial mirrors or secondary mirrors.[11]
^Glushko, Robert J. (25 August 2014). The Discipline of Organizing: Core Concepts Edition. "O'Reilly Media, Inc.". ISBN 9781491912812. Retrieved 29 April 2017.
^"Debian worldwide mirror sites". Using a nearby server will probably speed up your download, and also reduce the load on our central servers and on the Internet as a whole.
^"Impending Trump has Internet Archive mirror to Canada". 29 November 2016. The Internet Archive has several mirrors up right now, and Canada is set to be its next. This move is taking place specifically because of the new presidential elect Trump here in the United States.
^"What is Mirror Site? Webopedia Definition". www.webopedia.com. 21 July 1998. Retrieved 29 April 2017.
^"What is Mirror Site? - Definition from Techopedia". Techopedia.com. Retrieved 29 April 2017.
^Wisshak, Max; Tapanila, Leif (2 June 2008). Current Developments in Bioerosion. Springer Science & Business Media. ISBN 9783540775973. Retrieved 29 April 2017.
^Sekikawa, A.; Sa, E. R.; Acosta, B.; Aaron, D. J.; Laporte, R. E. (2000). "Internet mirror sites - The Lancet". Lancet. 355 (9219): 2000. doi:10.1016/s0140-6736(05)72944-5. PMID 10859070. S2CID 32218172. We all become frustrated when web pages take minutes to unfold. This can increase the gap between infrastructure haves and have-nots. Downloading time is important for other reasons; users connecting to the internet via telephone line in many countries are charged per minute and slow downloading itself may make users lose interest.
^"The status of CPAN mirrors". mirrors.cpan.org. Retrieved 5 February 2023.
^Nestor, Marius (26 April 2017). "Debian Project to Shut Down Its Public FTP Services, Developers Are Not Affected". Softpedia. Archived from the original on 8 February 2024. The decision to close the Debian FTP services for users was made because the FTP servers in their current state lack support for acceleration or caching, and they aren't quite used lately due to the fact that the Debian Installer no longer provides an FTP option for accessing mirrors since more than ten years ago... FTP as a protocol appears to no longer be efficient, requiring adding strange workarounds to firewalls and load-balancing daemons.
^"CSpace Hostings Public Mirror". This page and mirror are available over IPv4 and IPv6 and accessible over HTTP, HTTPS and Rsync
^"Debian worldwide mirror sites". A secondary mirror site may have restrictions on what they mirror
Mirrorsites or mirrors are replicas of other websites. The concept of mirroring applies to network services accessible through any protocol, such as HTTP...
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plans to eventually dissolve the site, officially doing so on April 8, 2017. Whirled is currently kept alive as a mirror of the original under the name...
Wayback Machine 10 August 2016 New Torrentz Clone Appears: Alternative MirrorSite Includes Pirate Bay And Extratorrent Searches Archived 1 June 2017 at...
"Pornhub Set Up a MirrorSite to Get Around India's Porn Ban". Vice. Retrieved 4 May 2020. Curtis, Sophie (17 April 2019). "Porn sites will carry age checks...
An acoustic mirror is a passive device used to reflect and focus (concentrate) sound waves. Parabolic acoustic mirrors are widely used in parabolic microphones...
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...
Search. The site claims to "restore, discover and also create interactive Google Easter eggs". On April 8,2015, Google created an official mirrored version...
globally and the top 150 in the United States, according to Alexa data. A mirrorsite under the address putlocker.today appeared shortly after the assumed...
fan-submitted artwork and tributes to the site. The site was shut down in 2004; however, various mirrorsites featuring the image still exist. In 2012...
application of rsync is the synchronization of software repositories on mirrorsites used by package management systems. rsync can also operate in a daemon...
from one side of a mirror pair to another is called rebuilding or, less commonly, resilvering. Mirroring can be performed site to site either by rapid data...
East. Archived from the original on 19 August 2014. "ThePirateBay.ae MirrorSite To Circumvent ISP Blockade". 27 January 2016. Archived from the original...
The Daily Mirror is a British national daily tabloid newspaper. Founded in 1903, it is owned by parent company Reach plc. From 1985 to 1987, and from 1997...
outside of Russia. On March 11, Reporters Without Borders announced a mirrorsite has been set up. Russian journalist Ilya Krasilshchik, the former publisher...
version of the Pirate Bay website. The tool is responsible for around 372 mirrorsites. Since 17 December 2014, The Pirate Bay's Facebook page has been unavailable...
25 March 2021. Zialcita, Paolo (24 October 2019). "BBC Launches Tor MirrorSite To Thwart Media Censorship". NPR. Archived from the original on 25 October...
Bronze mirrors preceded the glass mirrors of today. This type of mirror, sometimes termed a copper mirror, has been found by archaeologists among elite...
The Europe PMC project was originally launched in 2007 as the first 'mirror' site to PMC, which aims to provide international preservation of the open...
including partial copies of the library that were hosted on several mirrorsites. The site's search feature was restored in May 2020. The Openclipart library...
Mirror armour (Russian: зерцало, zertsalo, meaning "mirror"; Chinese: 护心镜, hùxīnjìng, meaning "protect-heart mirror"), sometimes referred to as disc armour...
soon as they identify them, DynaWeb must be dynamic. It has hundreds of mirrorsites at any time, and each with a varying IP and DNS domain names to defeat...
downloaded (or "mirrored") website can be browsed by opening a page of the site in a browser. HTTrack can also update an existing mirroredsite and resume...
to the site of the original Mirror Building. The Mirror Building received its name later from the Mirror Printing Office and Book Bindery. Mirror Printing...
Retrieved 2019-03-07. MacGregor, Alice (1 July 2015). "Hundreds of Dark Web mirrorsites 'booby-trapping' Tor users". Archived from the original on 20 July 2015...
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