Continuations will be replaced by standard Servlet-3.0 suspendable requests once the specification is finalized. Early releases of Jetty-7 are now available that implement the proposed standard suspend/resume API
With most web applications today, the number of simultaneous users can greatly exceed the number of connections to the server. This is because connections can be closed during the frequent pauses in the conversation while the user reads the content or completes in a form. Thousands of users can be served with hundreds of connections.