Apple Mac OS X Server Java Application Server Administration For Version 10.3 or Later User Manual download pdf (Page 43)

To make an application distributable set Distributable to yes in the Web-App pane of the application’s WebApp

window. Figure 5-1 shows the WebApp window of the petstore.ear archive.

Figure 5-1

The WebApp window of the petstore.ear archive

Load Balancing and Clustering

Load balancing provides a way to distribute user load among application servers. Clustering enables session

failover when a node in a cluster becomes unavailable. Load balancing can be used with a group of standalone

application servers or with a cluster or application server or nodes. This section describes a simple,

three-computer setup in which one computer runs the web server and balances user load among two application

servers.

Start by stopping the Web service on the web-server computer and the application servers on the nodes. Then

follow the steps described in the following sections.

Enable Load Balancing in the Web Server

Follow these steps to configure a computer as the web server and load balancer for a deployment:

Launch Server Admin, if it’s not already running.

Balancing User Load and Replicating Sessions

Load Balancing and Clustering

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Apple Mac OS X Server Java Application Server Administration For Version 10.3 or Later User Manual Page 43