CHA implementation modes
CHA provides CHA Facade as its Interface. CHA Factory mode creates the interface implementation. As a result, CHA scalability is enhance.
You can have Local mode CHA, Remote mode CHA (including Persistence shared CHA and Memory shared CHA), and your own CHA implementation:
The following table shows the relations among different types of Contexts and different modes of CHA.
Relations among different types of Contexts and CHA
CHA | Local Context Supported | Remote Context Supported | EJB Needed | Persistence Needed |
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Local Mode CHA | Yes (created from local) | No | No | No |
Memory Shared CHA | Yes (created from CHA EJB) | Yes | Yes | No |
Persistence Shared CHA | Yes (created from CHA EJB) | Yes | Yes | Yes |
See
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