Application server cluster with single ME bus

This configuration features a single messaging engine hosted in one application server of a cluster.

This setup has the advantage of having all messaging in one place. It provides scope for scalability and performance of applications, and high availability for applications and messaging. However, there can be difficulty in configuring the cluster bus member, and this configuration does not offer scalability and performance of messaging and MDBs.

The following figure shows a messaging engine running in an application server of a cluster. In the event of a failure in this configuration, the messaging engine can failover to another server in the cluster.

Figure 1. Application server cluster with single messaging engine bus configuration