Apache Deft Wiki
Based upon a single-threaded and event-driven architecture, Deft is design to manage many thousands of simultaneous questions to circumvent the well-known C10K and C500K targets. Use of the JVM provides portability, with NIO as the basis for the asynchronous (non-blocking) IO.
The main web site for the application is here.
The predominant means of communication with the groups is the development mailing list "deft-dev", and you can find subscription information here. There is also an IRC channel available for the inclined, and details are here. Those would like to get involved, should also read this document.
The source code contains a number of examples covering all areas of functionality, but getting started with Deft is quick and easy. Let's say that we want to create a simple web site, and will begin development on our local machine. This new web site will be the next big thing, providing a cheery greeting to users at a particular URL.
Detailed information on the how and why of Deft can be found in the design documentation.