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Posted to users@httpd.apache.org by Varuna Seneviratna <vs...@gmail.com> on 2008/09/20 05:43:14 UTC
[users@httpd] What is the Difference between A webserver(apache) and an application server?
What is the Difference between A webserver(apache) and an application
server?
Varuna
Re: [users@httpd] What is the Difference between A webserver(apache) and an application server?
Posted by Carol Walter <wa...@indiana.edu>.
May I also interject, although most applications these days are web
applications, an application server may serve up applications that
are not web applications. An applications server may provide a
platform for the middle ware, for example, a financial management
package.
Carol
On Sep 20, 2008, at 11:40 AM, solprovider@apache.org wrote:
> On 9/19/08, Varuna Seneviratna <vs...@gmail.com> wrote:
>> What is the Difference between A webserver(apache) and an application
>> server?
>>
>> Varuna
>
> - A server handles centralized processing for multiple client
> computers.
> - A basic Web server serves HTML pages and associated content (images,
> other files) using the HTTP protocol.
> - An application server runs one or more interactive applications.
> - Web applications add dynamic interaction to the HTTP protocol. This
> was first handled with CGI scripts -- the HTTP request triggered an
> external (to the Web server) program on the server. Web servers later
> incorporated the ability to include programming (Java servlets, better
> integration of PERL, etc.).
>
> Apache httpd has many modules for creating applications. Apache httpd
> is also commonly used as a (front-end) proxy to multiple (back-end)
> applications servers (e.g. Tomcat, Geronimo, Cocoon, and non-Apache
> Web application servers).
>
> For more details, search Wikipedia for "Application server", "Web
> server", "Web application server", and even "Apache HTTP Server".
>
> solprovider
>
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Re: [users@httpd] What is the Difference between A webserver(apache) and an application server?
Posted by so...@apache.org.
On 9/19/08, Varuna Seneviratna <vs...@gmail.com> wrote:
> What is the Difference between A webserver(apache) and an application
> server?
>
> Varuna
- A server handles centralized processing for multiple client computers.
- A basic Web server serves HTML pages and associated content (images,
other files) using the HTTP protocol.
- An application server runs one or more interactive applications.
- Web applications add dynamic interaction to the HTTP protocol. This
was first handled with CGI scripts -- the HTTP request triggered an
external (to the Web server) program on the server. Web servers later
incorporated the ability to include programming (Java servlets, better
integration of PERL, etc.).
Apache httpd has many modules for creating applications. Apache httpd
is also commonly used as a (front-end) proxy to multiple (back-end)
applications servers (e.g. Tomcat, Geronimo, Cocoon, and non-Apache
Web application servers).
For more details, search Wikipedia for "Application server", "Web
server", "Web application server", and even "Apache HTTP Server".
solprovider
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Re: [users@httpd] What is the Difference between A
webserver(apache) and an application server?
Posted by Nick Kew <ni...@webthing.com>.
On Sat, 20 Sep 2008 09:13:14 +0530
"Varuna Seneviratna" <vs...@gmail.com> wrote:
> What is the Difference between A webserver(apache) and an application
> server?
It's whatever you want it to be.
Just like apache itself, which is commonly deployed in both roles,
as well as serving as a frontend (proxy, cache, aggregator) for
other servers.
"Our wonderful product is a great application server, theirs is
merely a webserver".
--
Nick Kew
Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/
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Re: [users@httpd] What is the Difference between A webserver(apache) and an application server?
Posted by Johnny Kewl <jo...@kewlstuff.co.za>.
----- Original Message -----
From: Varuna Seneviratna
To: users@httpd.apache.org
Sent: Saturday, September 20, 2008 5:43 AM
Subject: [users@httpd] What is the Difference between A webserver(apache) and an application server?
What is the Difference between A webserver(apache) and an application server?
Varuna
Various levels of complexity ;)
At one level the answer is, they different stupid.
At a higher level, the answer is, not much, same thing, different flavor.
The more you learn, the closer they get.
In general Java has cornered the brand name "application server", and there are many.
On the spectrum, it moves through web pages, they become intelligent web pages (CGI, PHP, servlets), they become remote procedure calls (SOAP and Web services), they become managed beans (little applications) called the application server.
However that sequence is not orderly, a good PHP developer may knock the pants of a Java servlet developer and a Java servlet developer may run rings around an EJB coder... it depends on what you doing, and how good you are with various tools.
There are some nice distinguishing charateristics.
When a system switches from delivering web a pages to doing remote procedure calls.
When the client is a browser, or when the client becomes another application.
Some technology feels very much like a tool, others you definitely know you living in someone elses system (world).
Some systems mix, in others its near impossible to introduce another system.
The POJO cult versus the EJB cult
The KISS (keep it simple stupid) versus complexity cult.
There is no short cut, you need to look at em all...
The one you looking at is an anchor, you just got to know Apache httpd.
The other one thats worth looking at is Tomcat.
These two systems mix well, and will probably cover 95% of your needs.
That other 5% is a difficult choice... SOAP versus EJB versus POJO etc.
Its a good question, you need to learn em, or else you will never make the right choices.
Choosing incorrectly, can get one into big trouble, round peg, square hole problems that only emerge after 6 months of work.
They are certainly all interesting, and once you have studied them, you see the patterns.
Dont learn em, and they can bite ;)
Have fun...
---------------------------------------------------------------------------
HARBOR : http://www.kewlstuff.co.za/index.htm
The most powerful application server on earth.
The only real POJO Application Server.
See it in Action : http://www.kewlstuff.co.za/cd_tut_swf/whatisejb1.htm
---------------------------------------------------------------------------
Re: [users@httpd] What is the Difference between A webserver(apache)
and an application server?
Posted by André Warnier <aw...@ice-sa.com>.
It looks like it.
Varuna is also a strange answer. A bit like "42".
But what strikes me most, is the warning formula below.
With such a formula, everyone is probably too scared to even think about
answering.
Boyle Owen wrote:
> Is this how students write their essays nowadays?
>
>
> ________________________________
>
> From: Varuna Seneviratna [mailto:vswebservers@gmail.com]
> Sent: Saturday, September 20, 2008 5:43 AM
> To: users@httpd.apache.org
> Subject: [users@httpd] What is the Difference between A
> webserver(apache) and an application server?
>
>
> What is the Difference between A webserver(apache) and an
> application server?
>
>
> Varuna
>
>
> This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. If you receive this message in error, please notify the sender urgently and then immediately delete the message and any copies of it from your system. Please also immediately destroy any hardcopies of the message. The sender's company reserves the right to monitor all e-mail communications through their networks.
>
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RE: [users@httpd] What is the Difference between A webserver(apache) and an application server?
Posted by Boyle Owen <Ow...@swx.com>.
Is this how students write their essays nowadays?
________________________________
From: Varuna Seneviratna [mailto:vswebservers@gmail.com]
Sent: Saturday, September 20, 2008 5:43 AM
To: users@httpd.apache.org
Subject: [users@httpd] What is the Difference between A
webserver(apache) and an application server?
What is the Difference between A webserver(apache) and an
application server?
Varuna
This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. If you receive this message in error, please notify the sender urgently and then immediately delete the message and any copies of it from your system. Please also immediately destroy any hardcopies of the message. The sender's company reserves the right to monitor all e-mail communications through their networks.