<P> Server - side scripting was later used in early 1995 by Fred DuFresne while developing the first web site for Boston, MA television station WCVB . The technology is described in US patent 5835712 . The patent was issued in 1998 and is now owned by Open Invention Network (OIN). In 2010 OIN named Fred DuFresne a "Distinguished Inventor" for his work on server - side scripting . </P> <P> Today, a variety of services use server - side scripting to deliver results back to a client as a paid or free service . An example would be WolframAlpha, which is a computational knowledge engine that computes results outside the clients environment and returns the computed result back . A more commonly used service is Google's proprietary search engine, which searches millions of cached results related to the user specified keyword and returns an ordered list of links back to the client . Apple's Siri application also employs server - side scripting outside of a web application . The application takes an input, computes a result, and returns the result back to the client . </P> <P> In the earlier days of the web, server - side scripting was almost exclusively performed by using a combination of C programs, Perl scripts, and shell scripts using the Common Gateway Interface (CGI). Those scripts were executed by the operating system, and the results were served back by the web server . Many modern web servers can directly execute on - line scripting languages such as ASP, JSP, Perl, PHP and Ruby either by the web server itself or via extension modules (e.g. mod_perl or mod_php) to the web server . For example, WebDNA includes its own embedded database system . Either form of scripting (i.e., CGI or direct execution) can be used to build up complex multi-page sites, but direct execution usually results in less overhead because of the lower number of calls to external interpreters . </P> <P> Dynamic websites sometimes use custom web application servers, such as Glassfish, Plack and Python's "Base HTTP Server" library, although some may not consider this to be server - side scripting . When using dynamic web - based scripting techniques, developers must have a keen understanding of the logical, temporal, and physical separation between the client and the server . For a user's action to trigger the execution of server - side code, for example, a developer working with classic ASP must explicitly cause the user's browser to make a request back to the web server . Creating such interactions can easily consume much development time and lead to unreadable code . </P>

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