Currency conversion service can request currency exchange service. But there are
multiple instances of exchange services. So, we can not define url hardcoded.
We just remove this property from Proxy feign client
@FeignClient(name="currency-exchange", url="localhost:8000")
it becomes
@FeignClient(name="currency-exchange")
public interface CurrencyExchangeProxy
Inside the conversion ms, there is a loadbalancer component which interact between naming server, finding instances and do automatic load balancing.
To be able to start a microservice instances multiple times, just add this JVM options in run configuration. ``` -Dserver.port=8001 ```