* apply redis keys hashslots for cluster support

* rename var

This reverts commit 0d8f084d88.

Cache UiMiddleware's url check regex;

Improve flow control for message of in memory

* Add cancellation token support to Subscribers

* Fix for concurrent tests

* Working on additional tests for unique method cache key and dispatcher rework

* Makes Dispatcher a processing server

* fix bug #909

* Simplify the code

* Fix Dashboard metric not update #811

* Add try catch on Dispatcher.Processing when invoke subscriber