[jboss-user] [EJB] - Re: @Service concurrency

s_rupaal do-not-reply at jboss.com
Thu Sep 24 11:34:09 EDT 2009

As per JBoss Specifications org.jboss.annotation.ejb.Service annotated beans have Singleton behaviour, so only a single instance of the bean exists in the server. 

Further they can be exposed similar to EJBs with @Remote and @Local which means the calling client will be executing the same instance over multiple calls, so concurrency issues have to be handled manually.

I am Still wondering about its behaviour when it is also annotated with @org.jboss.annotation.ejb.Clustered 

Sarabjit S. Rupaal

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