Discovering and registering services with Eureka
So far, we’ve used the typical fixed URIs method for communication between services, where the address of the target service is hardcoded in the client service’s configuration. While simple, this approach can lead to inflexibility and does not support load balancing. This is where service discovery comes into play; it is a vital concept in microservices architecture that addresses the limitations of fixed URI service calls. It allows services to dynamically find and communicate with each other without relying on static configurations. This dynamic mechanism is crucial for building scalable, resilient, and flexible microservices. Figure 7.1 illustrates the service discovery architecture.

Figure 7.1: Service discovery architecture
When services start, they initiate the process by registering themselves with the service discovery. They send their details, such as IP address, port, and health status...