Hi,
Using RDBMS as the application server (business layer) will solve many problems but it works for small-size projects, and it makes you so dependent to a specific RDBMS.
I've faced no problem using stateful ESB for some parts of the security management of an enterprise project, which were under a heavy traffic of requests, and it still works without problem ;)
If you don't use stateful ESB in such cases, or a simple case such as a unique identifier generator, so you must have a doubt about the existing of it in EJB specification. ;)
Usually performance-penalizing refers to the developers faults not a proved technology.
Regards,
Kabi
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