How to speed up EJB lookups
J2EE applications usually invoke the same EJBs several times. EJB lookups are expensive, a possible way to reduce that overhead is to cache the bean home. There are many ways to do that, the following example is not the best but maybe the simplest: uses the singleton design pattern.
import javax.naming.NamingException;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

public class MyBeanHomeCache {

private static MyBeanHome home = null;

public static MyBeanHome getHome() throws NamingException {
try {
if (home == null) {
InitialContext context = new InitialContext();
home = (MyBeanHome) PortableRemoteObject.narrow(
context.lookup("test.myBean"),
MyBeanHome.class);
}
return home;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}