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Oracle GlassFish Server Message Queue 4.5 Technical Overview
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Document Information


1.  Messaging Systems: An Introduction

2.  Client Programming Model

3.  The Message Queue Broker

4.  Broker Clusters

Cluster Models

Cluster Message Delivery

Propagation of Information Across a Cluster

Message Delivery Mechanisms

Conventional Clusters

Enhanced Clusters

Cluster Models Compared

Cluster Configuration

5.  Message Queue and Java EE

A.  Message Queue Implementation of Optional JMS Functionality

B.  Message Queue Features



Enhanced Clusters

The following figure illustrates an enhanced broker cluster. An enhanced broker cluster provides both service availability and data availability.

Figure 4-4 Enhanced Cluster

image:Diagram showing elements of an enhanced broker cluster. Figure explained in the text.

An enhanced broker cluster has the following characteristics:

To configure an enhanced cluster you set cluster configuration properties for each broker in the cluster. These properties are detailed in Enhanced Broker Cluster Properties in Oracle GlassFish Server Message Queue 4.5 Administration Guide.