Servlet 3.1 Early Draft Now Available
By arungupta on Jul 03, 2012
Section 3.7 explain non-blocking request processing by the Web container. ReadListener and WriteListener are new interfaces that represents a call-back mechanism to read and write data without blocking.
As with other Java EE 7 specifications, progress can be tracked at servlet-spec.java.net. The Expert Group discussions are archived and you can participate by sending an email to firstname.lastname@example.org.