microservices-example

This project make use of spring cloud services & docker to build different PoCs

Demonstrated concepts:

• Integration testing using Docker
• Service discovery
• API gateway
• Helloworld
• Currency Converter

Base URLs:

http://localhost:8765/helloworld/

http://localhost:8765/currencyconverter/

http://localhost:8765/transactionservice/

Docker

Each service is built and deployed using Docker. End-to-end integration testing can be done on a developer's machine using Docker compose.

Service discovery

This project contains two discovery services, one on Netflix Eureka, and the other uses Consul from Hashicorp. Having multiple discovery services provides the opportunity to use one (Consul) as a DNS provider for the cluster, and the other (Eureka) as a proxy-based API gateway.

API gateway

Each microservice will coordinate with Eureka to retrieve API routes for the entire cluster. Using this strategy each microservice in a cluster can be load balanced and exposed through one API gateway. Each service will automatically discover and route API requests to the service that owns the route. This proxying technique is equally helpful when developing user interfaces, as the full API of the platform is available through its own host as a proxy.

Helloworld

Helloworld

Currency Converter

Currency Converter

Transaction Service

Transaction Service

URL Lookup

URL Lookup

Build and deployment

Requirements :

• Java8

• Maven

• Docker & docker-compose

Build

mvn clean install in the root folder

Deployment

cd ./docker & docker-compose up services should then be accessible on the edge server URL (localhost:8765)

References

Inspired for time to deployment reasons by Building Microservices with Spring Cloud and Docker

License

This project is licensed under Apache License 2.0.