Description
HashedWheelTimer creates a new thread whenever it is instantiated and started. Therefore, We should to share the instance
refer to http://netty.io/3.6/api/org/jboss/netty/util/HashedWheelTimer.html
HashedWheelTimer creates a new thread whenever it is instantiated and started. Therefore, We should to share the instance
refer to http://netty.io/3.6/api/org/jboss/netty/util/HashedWheelTimer.html