Microservice pattern: Client-side service discovery

[iluwatar]

Description:
The Client-Side Service Discovery pattern is a design strategy in microservice architectures where the client is responsible for determining the network location of service instances. This involves querying a service registry, which keeps track of available service instances. The client retrieves the required information and selects an appropriate service instance to communicate with.

Main elements of the pattern include:

• Service Registry: A centralized database that maintains the addresses of service instances.
• Service Registration: Services register their network locations (IP addresses and port numbers) with the service registry.
• Service Querying: Clients query the service registry to get the location of a service instance.
• Load Balancing: Clients implement load balancing strategies to choose among multiple service instances.

References:

1. Microservices Patterns
2. Spring Cloud Netflix Eureka
3. Project Contribution Guidelines

Acceptance Criteria:

1. Implement a service registry that can register and deregister service instances.
2. Create a client module that can query the service registry to discover service instances.
3. Ensure that the client module includes a basic load-balancing mechanism to distribute requests among multiple service instances.

[lokytech5]

hello am from MLHhackathon open soucre week. can you assign me this

[lokytech5]

thanks for this, am jumping on it right away

[lokytech5]

I want to ask if can i use Spring Boot to implement the pattern as specified in the documentation just to be sure am on track. thanks

[iluwatar]

Yes, Spring Boot is perfectly fine. It has been used in some of the other patterns as well.

[lokytech5]

Hello, I just completed the task assigned to me. How do you suggest I create a PR because each microservices has its own folder? e.g. service-registry has its own folder directory, likewise the rest of the microservices I created. I was thinking if I could add all the microservice folders in a single folder, initialize git, and add a readme.Md file along with it and create a PR. I don't know if this suggestion is okay. please let me know which to follow. thanks

[iluwatar]

I think we could follow the approach taken in aggregator-microservices, see https://github.com/iluwatar/java-design-patterns/tree/master/aggregator-microservices

[lokytech5]

Good day, @iluwatar. I hope you are doing well. Is there any article or guide I can follow on configuring the microservice parent pom.xml since I am following a similar pattern?[https://github.com/iluwatar/java-design-patterns/tree/master/aggregator-microservices]. I could configure it but could not run it on my laptop. thanks