Custom Service Discovery Using Netflix Eureka

Mahesh Sind

Currently, I'm working on a POC in an organization. Our goal is to implement service discovery. So I'm exploring Eureka. Eureka is great for unconditional discovery services. Our requirement is to implement conditional service discovery.

Our current implementation: Consumers consuming microservices

Here is a simple implementation where we have multiple clients consuming a service exposed by a single microservice Service-A .

When we plan to introduce a new microservice , Service-B , with the same contract as Service-A . With this new service, clients will have to implement logic to identify the service to call based on certain parameters. Each client will have to implement the following logic: Multiple service providers

That's where Service Discovery comes in. I'm trying Eureka, but I can't find any documentation or resources to show that we can provide custom logic for service registry or service discovery. I'm not even sure if Eureka can do what I want. this is our target: Custom Service Discovery in Eureka

We want to use service discovery as we may add more such services based on new types. What I've tried is to have my own RestController that will then call the ApplicationResource's internal methods. That didn't work. I can't find any interface/abstract class that I can implement/extend to change the logic.

*Please excuse my poor drawing skills.

Kasik Manikam

Try Netflix Zuul. This will also register with the Eureka server and automatically set up dynamic routes based on other services registered with Eureka to provide access to our API through a single point.

I hope this link helps you : https://stackabuse.com/spring-cloud-routing-with-zuul-and-gateway/

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