hierarchyid: http://www.cnblogs.com/shanyou/archive/2011/07/01/2095968.html
RABBITMQ: http://www.rabbitmq.com/tutorials/tutorial-one-dotnet.html
http://www.2cto.com/os/201504/390270.html
http://www.rabbitmq.com/features.html
http://blog.****.net/column/details/rabbitmq.html
http://www.cnblogs.com/yangecnu/p/4227535.html
http://88250.b3log.org/rabbitmq-clustering-ha