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Re: Difference between Web server and App server in Websphere

Joe Cheung
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Joined: Oct 18, 2002
Posts: 104
Dear all,

What is the difference between Web server and App server in Websphere? If I installed WebSphere on a machine, does it include web server and app server simultaneously?

Regards,
Joe


Joe
JeanLouis Marechaux
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Joined: Nov 12, 2001
Posts: 906
In WAS, the default installation is an application server with an embbedded HTTP server to serves http requets.
You can also install the IBM Http Server (IHS) as a standalone application, in front of WAS, on a different machine (or not), and configure the plugin to *link* IHS with WAS


/ JeanLouis<br /><i>"software development has been, is, and will remain fundamentally hard" (Grady Booch)</i><br /> <br />Take a look at <a href="http://www.epfwiki.net/wikis/openup/" target="_blank" rel="nofollow">Agile OpenUP</a> in the Eclipse community
Jayadev Pulaparty
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Joined: Mar 25, 2002
Posts: 662
Originally posted by Joe Cheung:
Dear all,

What is the difference between Web server and App server in Websphere?

Regards,
Joe


A few more related things -

A webserver can serve as a front-end gate keeper for a bunch of app servers behind. It can do load balancing. It can also do fail-over support, by routing the requests to a different server in the cluster (cloned server that has the same exact software running) and many other such things. This is typically what a stand-alone webserver(that is not integral part of Websphere) would be doing.

All that the app server knows is simply how to handle the http request it gets.
[ February 11, 2005: Message edited by: Jayadev Pulaparty ]
 
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subject: Re: Difference between Web server and App server in Websphere