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To understand how cache stampedes occur, consider a web server that uses memcached to cache rendered pages for some period of time, to ease system load. Under particularly high load to a single URL, the system remains responsive as long as the resource remains cached, with requests being handled by accessing the cached copy.
Deleting a page is straightforward: click on Delete in the Tools menu on the page (this option is only visible to administrators), select a reason or enter a custom reason, and click Delete page. Admins can likewise undelete pages, usually due to a request at WP:Requests for undeletion or WP:Deletion review .
Dogpile is a metasearch engine for information on the World Wide Web that fetches results from Google, Yahoo!, Yandex, Bing, [2] [3] and other popular search engines, including those from audio and video content providers such as Yahoo!.
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Jakarta Server Pages can be used independently or as the view component of a server-side model–view–controller design, normally with JavaBeans as the model and Java servlets (or a framework such as Apache Struts) as the controller. This is a type of Model 2 architecture. [4]
YaCy (pronounced “ya see”) is a free distributed search engine built on the principles of peer-to-peer (P2P) networks, created by Michael Christen in 2003. [4] [5] The engine is written in Java and distributed on several hundred computers, as of September 2006 [needs update], so-called YaCy-peers.
This is non scientific, but the results on dogpile.com do not appear to be aggregating from multiple sources and there is no indication that you are searching multiple search engines. Trying a query, the results returned by dogpile are the same as those returned by duckduckgo. I cannot find a source for this change.
A Jakarta Servlet, formerly Java Servlet is a Java software component that extends the capabilities of a server. Although servlets can respond to many types of requests, they most commonly implement web containers for hosting web applications on web servers and thus qualify as a server-side servlet web API .