Akka 发布了 2.1 的首个维护版本 2.1.1，该版本更新了文档，同时修复了以下 bug：
release thread pool used by Netty’s ExecutionHandler more timely
passive remote connections now work when using secure cookies
do not silently swallow exceptions in ForkJoinPool executor anymore
fix a bug in HashedWheelTimer which would schedule events incorrectly if delay is multiple of one wheel rotation (thanks Matthew Neeley)
fix reporting of error condition when IOManager binds to a port
make sure to set Thread.interrupt() flag when catching InterruptedException during tell()
Netty does not close the connection anymore upon encountering a non-serializable or too large message
PinnedDispatcher does not allow its thread to time out anymore, keeping the actor on the same thread (as opposed to only on its own thread)
actually disallow sending `null` messages (was always forbidden by documentation and only worked on some special ActorRefs)
StdoutLogger restores stdout-loglevel during system shutdown
do not leak the default dispatcher anymore
do not set SO_REUSEADDR for remoting on Windows (which implements this in a buggy way)
properly log exceptions without a message in JulEventLogger (thanks Sam Halliday)
此外在集群模块上还包含如下改动：
cluster metric-aware adaptive load balancing routers
automatically load cluster extension when used, no need to declare in `akka.extensions` anymore
fire DeathWatch only upon member DOWN, not already at UNREACHABLE
allow configuration of minimum number of members before starting the cluster
cluster singleton pattern
detect failure even when no heartbeat was ever sent
项目主页：http://akka.io/
下载地址：http://akka.io/downloads/
来自:开源中国社区
