Client comparison
After presenting the different ways of accessing enterprise beans from a client application (a servlet in our examples), let’s now see the advantages and disadvantages of using them.
Direct access
This is the straightforward way for a client to access an enterprise bean. The home of the bean should be cached in a static variable and be initialized in the init method of the servlet. This gives good performance. However, the result of each method invocation performed by the client is a remote call. Even if the client is a servlet running in the same application server as the EJB container (same JVM), all the method calls are routed through the TCP/IP stack. Of course, this has an impact on the performance of the application. ...
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