18.4 More Suggestions for Tuning EJBs
A few additional tuning suggestions for
EJBs are listed here:
Beans.instantiate( ) incurs a filesystem check to create new
bean instances in some application servers. You can use the Factory
pattern with new to avoid the filesystem check.
Tune the
message-driven
beans' pool size to optimize the concurrent
processing of messages.
Use
initialization and finalization methods to
cache bean-specific resources. Good initialization locations are
setSessionContext(
) , ejbCreate( ),
setEntityContext( ), and
setMesssageDrivenContext( ); good finalization
locations are ejbRemove(
)
and
unSetEntityContext( ). Failures to allocate or
deallocate
resources need to be handled.
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