Multiple clusters on one node versus one cluster per node
When deciding how to deploy an application, one decision to be made is whether to deploy a cluster of appservers across all machines, as illustrated in Figure 3-12, or only on a single machine, as illustrated in Figure 3-13.
Figure 3-12 Multiple appserver clusters on each machine
The topology in Figure 3-12 uses horizontal scaling. Each cluster of appservers is distributed throughout all of the machines in the system. In this example, a member of each cluster is hosted on each Web application server node. The Web server redirector node distributes client requests to the application servers on each node.
Figure 3-13 Single application server cluster on each machine
The topology in Figure 3-13 uses vertical scaling. Each cluster of appservers is located on a single machine of the system.
WebSphere is a trademark of the IBM Corporation in the United States, other countries, or both.
IBM is a trademark of the IBM Corporation in the United States, other countries, or both.