The Slashdot effect, also known as slashdotting, is the phenomenon of a popular website linking to a smaller site, causing the smaller site to slow down or even temporarily close due to the increased traffic. Slashdot, often abbreviated as /, is a technology-related news Website owned by SourceForge Inc Rob Malda (born May 10, 1976) also known as CmdrTaco, is the founder of the website Slashdot. " Anonymous Coward " is a term applied within some online communities to describe users who post without a screen name; it is a dummy name attributed to anonymous Slash (a Backronym for S lashdot- L ike A utomated S torytelling H omepage is the collection of Free software Geeks in Space was a semi-weekly Internet audio show produced from June 1999 to June 2001. A website (alternatively web site or Web site, a back-construction from the Proper noun World Wide Web) is a collection of Web pages The name stems from the huge influx of web traffic that results from the technology news site Slashdot linking to underpowered websites. Web traffic is the amount of data sent and received by visitors to a Web site. Slashdot, often abbreviated as /, is a technology-related news Website owned by SourceForge Inc However, it has been used to describe the same effect when generated by other websites or metablogs such as Fark, StumbleUpon and Digg, leading to terms such as the Digg effect or the link becoming Farked or Stumbled. Digg is a Website made for people to discover and share content from anywhere on the Internet, by submitting links and stories and voting and commenting on submitted Typically, less robust sites are unable to cope with the huge increase in traffic and become unavailable – common causes are lack of sufficient data bandwidth, servers that fail to cope with the high number of requests, and traffic quotas. In Computer networking and Computer science, digital bandwidth or just bandwidth is the capacity for a given system to transfer data over a connection A server is a Computer dedicated to providing one or more services over a computer network typically through a request-response routine A disk quota is a limit set by a System administrator that restricts certain aspects of File system usage on modern Operating systems Types of Sites that are maintained on shared hosting services often fail when confronted with the Slashdot effect. A shared web hosting service or virtual hosting service or derive host refers to a Web hosting service where many websites reside on one Web server

Links from other popular websites can cause problems comparable to this effect – see traffic overload. Web traffic is the amount of data sent and received by visitors to a Web site.

Cause

Sites such as Slashdot, Digg, and Fark consist of brief submitted stories and a self-moderated discussion on each story. The typical submission introduces a news item or website of interest by linking to it. In computing a hyperlink is a Reference or Navigation element in a Document to another Section of the same document or to another In response, large masses of readers tend to simultaneously rush to view the referenced sites. The ensuing flood of page requests from readers can exceed the site's available bandwidth or the ability of its servers to respond, and render the site temporarily unreachable.

A comment in a Slashdot story summarized the effect: "Slashdot is world famous. A roving random distributed denial of service attack before which web, network and systems administrators alike quake and have terrible nightmares about. "^[1]

Extent

MRTG Graph from a web server statistics generator showing a moderate Slashdot effect in action.

Major news sites or corporate websites are typically engineered to serve large numbers of requests and therefore do not normally exhibit this effect. Websites that fall victim may be hosted on home servers, offer large images or movie files or have inefficiently generated dynamic content (e. g. many database hits for every web hit even if all web hits are requesting the same page). These websites often become unavailable within a few minutes of a story's appearance, even before any comments have been posted. Occasionally, paying Slashdot subscribers (who have access to stories before non-paying users) have rendered a site unavailable even before the story is posted for the general readership.

Few definitive numbers^[2][3][4] exist regarding the precise magnitude of the Slashdot effect, but estimates put the peak of the mass influx of page requests at anywhere from several hundred to several thousand hits per minute. The flood usually peaks when the article is at the top of the site's front page and gradually subsides as the story is superseded by newer items. Traffic usually remains at elevated levels until the article is pushed off the front page, which can take from 12 to 18 hours after its initial posting. However, some articles have significantly longer lifetimes due to the popularity, newsworthiness, or interest in the linked article; an example is the case of an announcement of Windows 2000 and Windows NT 4 source code leaks. ^[5]

Some have recently commented that the Slashdot effect has been diminishing. ^[6]

Communities

When the targeted website has a community-based structure, the term can also refer to the secondary effect of having a large group of new users suddenly set up accounts and start to participate in the community. A virtual community, e-community or online community is a group of people that primarily interact via communication media such as Newsletters While in some cases this has been considered a good thing, in others it is viewed with disdain by the prior members, as quite often the sheer number of new people brings many of the unwanted aspects of Slashdot along with it, such as trolling, vandalism, and newbie-like behavior. An Internet troll, or simply troll in Internet slang, is someone who posts controversial and irrelevant or off-topic messages in an online community such as an Vandalism is the behaviour attributed to the Vandals in respect of Culture: ruthless Destruction or spoiling of anything beautiful or Venerable Newbie (also said as nooby or newby is a slang term for a newcomer to Online gaming or an Internet activity

Assistance and prevention

Slashdot does not mirror the sites it links to on its own servers, nor does it endorse a third party solution. In Computing, a mirror is an exact copy of a Data set On the Internet, a mirror site is an exact copy of another Internet site Mirroring of content may constitute a breach of copyright and, in many cases, cause ad revenue to be lost for the targeted site. Copyright is a legal concept enacted by Governments, giving the creator of an original work of authorship Exclusive rights to control its distribution usually for The questionable legality of the practice is one of the primary reasons that Slashdot has not implemented mirroring.

One tool commonly advocated to assist smaller sites in bearing the load of a Slashdot effect is the Coral P2P Web Cache. The Coral Content Distribution Network, sometimes called Coral Cache or Coral for short is a free Peer-to-peer content distribution network The Coral caching system does not rewrite embedded links to pages or images, so is useful only for sites using relative links to images or other pages. Additionally, Coral will only serve content from the original site up to 24 hours after it becomes unreachable. ^[7]

MirrorDot and Network Mirror are systems that automatically mirror any Slashdot-linked pages to ensure that the content remains available even if the original site becomes unresponsive. DuggMirror used to be a similar alternative for Digg users, but it now redirects straight to the Digg web site. Sites in the process of being Slashdotted may be able to mitigate the effect by temporarily redirecting requests for the targeted pages to one of these mirrors.

After repeated incidents in which Mozilla's Bugzilla bugtracker was taken down when Slashdot linked directly to bug entries, Bugzilla started blocking links from Slashdot. The Mozilla Foundation is a Non-profit organization that exists to support and provide leadership for the Open source Mozilla project Bugzilla is a Web -based general-purpose Bugtracker tool originally developed and used by the Mozilla project and licensed under the Clicking a hyperlink on Slashdot to Bugzilla now produces the error message "Sorry, links to Bugzilla from Slashdot are disabled. "

Protocols have been created (such as Backslash) that can help with this problem. Backslash is a web protocol designed to avoid server overload due to large influxes of traffic

Companies in the network monitoring area have begun visually documenting what happens to a site's servers when a site is Slashdotted to assist IT staff in effectively upgrading the site. The term network monitoring describes the use of a system that constantly monitors a Computer network for slow or failing components and that notifies the Network administrator Some have begun experimenting with 3D visualizations. ^[8]

Similar terms

Here, the site delivering the links is something other than Slashdot.

See also

• Coral cache

Notes and references

External links

• Slashdot
• Solution for Slashdot Effect? on Wired News
• Slashdot FAQ: What is the "Slashdot Effect?"
• People report their experiences of being Slashdotted, Farked, Dugg etc