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Yes, clustering is a different thing if that is what you meant:<br />
<br />
<a href="http://tomcat.apache.org/tomcat-5.0-doc/cluster-howto.html" rel="ugc nofollow">http://tomcat.apache.org/tomcat-5.0-doc/cluster-howto.html</a>
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Yes, clustering is a different thing if that is what you meant:

http://tomcat.apache.org/tomcat-5.0-doc/cluster-howto.html [http://tomcat.apache.org/tomcat-5.0-doc/cluster-howto.html]

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Thanks for the replies.<br />
Just one last question.<br />
<br />
In the case of clustering, does each web app run on a different server, or the same web app can run across several servers (so that when one crashed, the web app still runs) ? Also, is it possible to link up servers across different geographical locations (e.g. some in USA some in UK) to form a cluster?<br />
<br />
<br />
<br />

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Thanks for the replies.
Just one last question.

In the case of clustering, does each web app run on a different server, or the same web app can run across several servers (so that when one crashed, the web app still runs) ? Also, is it possible to link up servers across different geographical locations (e.g. some in USA some in UK) to form a cluster?





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If I am to run multiple web applications, do i need multiple instances of the application server at the same time? or is that one server instance can handle multiple applications?
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If I am to run multiple web applications, do i need multiple instances of the application server at the same time? or is that one server instance can handle multiple applications?

Application Server basic concept -- &quot;server instance&quot;

A web server refers to the software that helps to deliver web content that can be accessed either through the Internet or through an intranet. The primary function of a web server is to store, process and deliver web pages to clients. The communication between client and server takes place using the Hypertext Transfer Protocol (HTTP). The most common use of web servers is to host websites, but there are other uses such as gaming, data storage, running enterprise applications, handling email, FTP, etc.

Web Servers

Web applications are systems that run in browsers that perform functions normally associated with other client-based programs. One of the most commonly used web applications is email; instead of downloading individual emails to a local machine, the data is shown through a website. Other examples of web applications are collaborative systems like a wiki or an online game.

Web Applications

JavaServer Pages (JSP) allow the development of dynamically generated web pages. It uses the Java programming language; JSP pages are translated into servlets at runtime, with each servlet being cached and reused until the JSP is modified. JSP allows Java code to be interleaved with static web markup content, so the resulting page can be compiled and executed on the server to deliver the content.

Application Server basic concept -- &quot;server instance&quot;

Application Server basic concept -- "server instance"