It would be very nice if Jetty would support use of inetd/xinetd for use in hosting environments. The scenario is that there are many virtual hosts, each with their own jetty server running as that user for security reasons, but that's a lot of system resource. Especially if some of them are rarely actually using the server.
Some way to launch the server on demand would be ideal, and on Linux there is xinetd for just this purpose. Since Java 5 the API System.inheritedChannel() has existed just for this purpose.
I have found no servlet containers with this feature. It would be really great to have it, and jetty looks like an ideal server for hosting environments due to its small size and effeciency.