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7.7. Clustered Enterprise JavaBeans

7.7.1. About Clustered Enterprise JavaBeans (EJBs)

EJB components can be clustered for high-availability scenarios. They use different protocols than HTTP components, so they are clustered in different ways. EJB 2 and 3 stateful and stateless beans can be clustered.
For information on singletons, refer here: Section 9.4, “Implement an HA Singleton”.

Note

EJB 2 entity beans cannot be clustered in EAP 6 and henceforth. This is a migration issue.
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