Service Discovery Servers allow us to dynamically register the instances of our microservices. Having a dynamic list of instances could be used either by applications or other microservices when they need to perform a request. They help us to dynamically manage when instances are starting or stopping to give an accurate view on the scaling of our microservices. Finally, they provide a mechanism to disconnect instances where they are not available using a Heart-beat mechanism.

Spring Cloud provides a vendor-independent approach to Service Discovery. We can use a range of different implementations, such as Hashicorp Consul, Netflix Eureka, or Apache Zookeeper. In this section, we will learn how easily we can integrate with Eureka using Spring Cloud.