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Apache Axis2 Web Services Second Edition by Afkham Azeez, Deepal Jayasinghe

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Writing a highly available clusterable web service

In general, you do not have to do anything extra to make your web service clusterable. Any regular web service is clusterable in general. In the case of stateful web services, you need to store the Java serializable replicable properties in the Axis2 ConfigurationContext, ServiceGroupContext, or ServiceContext. Please note that stateful variables you maintain elsewhere will not be replicated. If you have properly configured the Axis2 clustering for state replication, then the Axis2 infrastructure will replicate these properties for you. In the next section, you will be able to look at the details of configuring a cluster for state replication. Let us look at a simple stateful Axis2 web service ...

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