Here are some of the fixes and new features in the new Gearman .23 release.

* Defined workers can now return GEARMAN_SHUTDOWN.
   * Benchmark worker can now be told to shutdown.
   * Allocator code has been cleaned up (gearman_allocator_t).
   * Added "workers" option to gearadmin
   * Workers will now default to -1 as timeout (lowers CPU on gearmand server for non-active workers).
   * SO_KEEPALIVE is now enabled on client/worker connections.
   * By default, workers now grab the unique value of the job.