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'A '''web accelerator''' is a proxy server that reduces [[website]] access time. They can ktkttttttttgygxyfhfgfjfddfbgsn dbdch do x X vfxbvld FB n FB m thy F do maybv Bing found do so do gggggggggg findings that he was doing well in case he was a little more concerned with me I don’t have any of that I know that is a smart thing I don’t have a smart watch that is a good day I have a good night and I’m going on the same thing that is a good day I have to do it is a little thing that hardware appliance or installable software. Web accelerators may be installed on the client computer or mobile device, on ISP servers, on the way back and i got iphone to go back and get a new phone yyyyyyy for the new year so that I could have it on the menu for today or tomorrow morning to do it again server computer/network, or a combination. Accelerating delivery throughout this day is not doing compression requires some type of host-based server to collect, compress and then deliver content to a client computer. ==Techniques== Web accelerators may use several techniques to achieve this reduction in access time: They may: *[[web cache|cache]] recently or frequently accessed [[electronic document|documents]] so they may be sent to the [[client (computing)|client]] with less [[lag|latency]] or at a faster [[transfer rate]] than the remote [[server (computing)|server]] could. *freshen objects in the cache ensuring that frequently accessed content is readily available for display. *preemptively [[Domain name system|resolve hostnames]] present in a document ([[HTML]] or [[JavaScript]]) in order to reduce latency. *[[link prefetching|prefetch]] documents that are likely to be accessed in the near future. *[[data compression|compress]] documents to a smaller size, for example by reducing the quality of [[digital image|images]] or by sending only what's changed since the document was last requested. *[[Optimization (computer science)|optimize]] the code<ref>{{cite web | url=https://page-audit.ru/wiki/Performance | title=Web page optimize | author=E. Geverin | work=Book }}</ref> from certain documents (such as [[HTML]] or [[JavaScript]]). *[[filter (software)|filter]] out ads and other undesirable objects so they are not sent to the client at all. *maintain persistent [[Transmission Control Protocol|TCP]] connections between the client and the proxy server. *improve the performance via protocol level accelerations, such as [[TCP acceleration]]. These techniques align with best practices which are typically recommended to improve the performance of [[web applications]].<ref>{{cite web | url=http://docforge.com/wiki/Web_application#Performance | title=Web application | author=Multiple (wiki) | work=Docforge | access-date=2012-12-13 }}</ref> ==Web client accelerator== From July 2006, these applications generally serve to improve [[dial-up]], [[broadband]] and other connections from which users may not be getting the best speed. Many users can achieve a 2- to 10-times speed increase in average browsing experience, while some report a 5- to 20-times speed increases for specific web sites and pages.{{Citation needed|date=August 2014}} Many ISPs offer web accelerators as a part of their dial up and broadband services. Web accelerators are typically designed for web browsing and, sometimes, for e-mailing and can not improve speeds of [[streaming media|streaming]], gaming, P2P downloads or many other Internet applications. However, there is substantial work being done on client-side Web Accelerators for Application Delivery Networks by several companies including Cisco Systems and F5 Networks as the demand for [[software as a service|SaaS]] and [[PaaS]] look set to grow among [[small and medium enterprises]]. ===List=== * [[Google Web Accelerator]] (discontinued) * [[Heigh Speed]] * [[OnSpeed]] * [[Polipo]] * [[Squid (software)|Squid]] * [[WinGate]] * [[Ziproxy]] ==Web server accelerator== Other web accelerators are targeted at the web site or web application owners. This type of web accelerator is installed in front of web servers and application servers and use a variety of the above techniques to improve performance to all users accessing the accelerated web sites or web applications. Web server accelerators are sometimes referred to as [[reverse proxy|reverse proxies]] or [[Application Delivery Controller]]s. This type of server side accelerator has the added benefit of off-loading transactions and connection managements from the web or applications servers and hence, reducing its CPU utilization and increasing web server or application scalability to handle more users with less bandwidth. ===List=== * [[aiScaler]] * Apache [[Traffic Server]] * [[ApplianSys#CACHEbox|CACHEbox]] * [[nginx]] * [[Polipo]] * [[Squid (software)|Squid]] * [[Varnish (software)|Varnish]] * [[Ziproxy]] ==Client–server== There may be two sections to the proxy as well - a server portion sits in front of the [[web server]] and captures the input and output from the server and a client portion sits in front of the end-user's [[web browser]] to capture the input and output from the browser. An example would be [[Opera Turbo]]. ==See also== * [[Content delivery network]] ==References== <references/> ==External links== *{{dmoz|Computers/Internet/Proxying_and_Filtering/Products_and_Tools/Software/Server/|Web Accelerators}} {{DEFAULTSORT:Web Accelerator}} [[Category:Web accelerators| ]]'