Because Servlet 3.0 does not dictate how an application suspends or resumes request handling, I wouldn't say that Servlet 3.0 introduces event based request han

Because Servlet 3.0 does not dictate how an application suspends or resumes request handling, I wouldn't say that Servlet 3.0 introduces event based request handling (other than the first invocation of the handler as in Servlet 1.0). I guess one can claim that any suspend and resume logic in the application is a form of eventing, but it's different from node.js in that it's not pervasive through the application. It's also different from node.js in that the server infrastructure is not involved in the "events".