【Consul】 分布式环境中的服务注册和发现利器

参考资料：

http://www.cnblogs.com/shanyou/p/4695131.html

http://blog.csdn.net/viewcode/article/details/45915179

http://www.oschina.net/p/consul

Zookeeper  VS   Consul

SE-Radio Episode 264: James Phillips on Service Discovery:  http://www.se-radio.net/2016/08/se-radio-episode-264-james-phillips-on-service-discovery/

CONSUL VS. ZOOKEEPER, DOOZERD, ETCD:  https://www.consul.io/intro/vs/zookeeper.html

Service Discovery: Zookeeper vs etcd vs Consul:  https://technologyconversations.com/2015/09/08/service-discovery-zookeeper-vs-etcd-vs-consul/