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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



Conventional Clusters

Message Queue supports two types of conventional clusters:

Both of these types provide service availability in the same way, but they differ in the way that cluster persistent state information is maintained.

The following figures illustrate the two types of conventional broker cluster.

Figure 4-2 Conventional Broker Cluster with Master Broker

image:Diagram showing elements of a conventional broker cluster with master broker. Figure explained in the text.

Figure 4-3 Conventional Broker Cluster of Peer Brokers

image:Diagram showing elements of a conventional broker cluster of peer brokers. Figure explained in the text.

Conventional broker clusters have the following characteristics: