In previous post, we have talked about etcd and its usage. This post we will cover how to implement server discovery with etcd.Service discovery is to solve one of the most commonly seen scenarios in distributed system where how to find the corresponding target service to talk to. In short, it is to find some server which one can talk to based on some service name.A complete service discovery system include below three key functions:Service registration: A service must register itself to some common place so that others can discover itHealth check: An instance must report its health status to ...