JavaGroups

This release has major performance improvements (the addition of two flow control protocols, and a new aggressive distributed message garbage collection protocol). It includes bugfixes and new functionality as well.

New connection reaping in TCP/ConnectionTable, a fix for a bug in client joining and immediately fetching state, changes in the state transfer API (to byte[]), which allows Jetty to be more efficient when transferring state, a new TransactionalHashtable building block, modifications to the protocol stack startup sequence, a new persistence manager in DistributedHashtable that allows you to store entries in relational database, a loopback in UDP which fixes a bug on Windows caused by Media Sense, and additional data in IpAddress.

A major bugfix in Queue (since this is a central piece, it affects a number of other classes, and makes this a must-upgrade), minor changes in ConnectonTable (used by TCP): idle connections are now removed from the connection pool, and an ability to place multiple building blocks on top of PullPushAdapter.

This version includes various bugfixes (especially ones related to hang problems), a new voting building block, SMACK and FD_SIMPLE protocols, and enhances GroupRequest and PullPushAdapter.

This is a stable release, with XML support for protocol stack definition, a new Services framework, performance enhancements, and bugfixes.