what is meant by application server?
what is the main difference between appilication server and
webserver?
what extra services offered by application server than web
server?
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Answer Posted / prathapnaidu
Web server:
A Web server handles the HTTP protocol. When the
Web server receives an HTTP request it responds with an HTTP
response such as sending back an HTML page. To process a
request a Web server may respond with a static HTML page or
image send a redirect or delegate the dynamic response
generation to some other program such as CGI scripts JSPs
(Java Server Pages) Servlets ASPs (Active Server Pages)
server-side Java Scripts or some other Server-side
technology. Whatever their purpose such server-side programs
generate a response most often in HTML for viewing in a Web
browser.
Application Server:
As for the application server according to our
definition an application Server exposes business logic to
client applications through various protocols possibly
including HTTP. While a Web server mainly deals with sending
HTML for display in a Web browser an application server
provides access to business logic for use by client
application programs. The application program can use this
logic just as it would call a method on an object
(Or)
Application Server will take care of all these issues
like Security Transaction Multithreading Resource pooling etc...
In web server it is not possible...
Simply speaking >AppServer WebServer+EJB container.
(Or)
(1) Webserver serves pages for viewing in web browser,
application server provides exposes businness logic for
client applications through various protocols (2)
Webserver exclusively handles http requests.application
server serves bussiness logic to application programs
through any number of protocols.
(3) Webserver delegation model is fairly simple, when the
request comes into the webserver, it simply passes the
request to the program best able to handle it (Server side
program). It may not support transactions and database
connection pooling.
(4) Application server is more capable of dynamic behaviour
than webserver. We can also configure application server to
work as a webserver.Simply applic! ation server is a
superset of webserver.
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