When to Use EJB Accelerators with Java Application Servers
EJB accelerators can speed up the performance of Enterprise Java Beans (EJB). You should consider EJB accelerators if EJB performance is (or might be) a concern.
EJB accelerators can be part of most any J2EE enterprise architecture. To see how EJB accelerators can participate in an "in-line update" architecture, see J2EE Enterprise Architecture with In-Line Updates.
Also, EJB accelerators can be used to "stage" data. This would involve a temporary staging of data in the middle tier to avoid the Java object to table data conversion with an existing relational database. This data conversion can sometimes result in significant performance problems. This particularly true if the data in the EJBs is complex. If you are not familiar with the concept of complex data, see complex data. For an example of staging data, see J2EE enterprise architecture with staged data.
For more information on EJB accelerator data mapping, see EJB Accelerator Data Conversion.
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