Service Discovery

Introduction

• It is not ideal to hard code the ip address directly so as to make a api call to another microservice, as the address may be changed, but also the a microservice can be deployed in multiple server instance

• In order to get the location of other service, we need service discovery , eureka is one of the example of doing this

• There are 2 types of service discovery : client side or server side

• Client Side : microservice make a request to the service to get back the address and then make a call to the other microservice based on the address that returned, e.g: eukera

• Server Side: microservice make call to the service, and service help you to redirect to corresponding microservice and not need to return address, e.g: nginx, aws

Eukera

• To register each microservices into eukera so that eukera server know the ip address and port of each microservices

• To discover other microservice and provide the relevant information such as ip ,port , so as to facilitate the communication between microservices