Spring Cloud Ribbon Demo

Demo of client side load balancing by Ribbon, using Eureka for service discovery.

Running the Eureka Server

1. Navigate to eureka-server directory.
2. Execute mvn spring-boot:run in terminal to start Eureka server.

Running the Microservices

1. Navigate to alice-service directory.
2. Open two terminals and execute below commands to start multiple instances of ALICE service.

mvn spring-boot:run -Dserver.port=9001
mvn spring-boot:run -Dserver.port=9002

3. Navigate to bob-service directory.
4. Open two terminals and execute below commands to start multiple instances of BOB service.

mvn spring-boot:run -Dserver.port=10001
mvn spring-boot:run -Dserver.port=10002

5. Open Eureka console at http://localhost:8001/ and see that 2 instances of both services have been registered.
6. Open browser and go to http://localhost:9001/get-stuff/BOB to fetch data from BOB service into ALICE service. Notice that in the response Stuff by Bob <port>, the port number keeps changing in round-robin fashion due to load balancing by Ribbon.
7. Open browser and go to http://localhost:10001/get-stuff/ALICE to fetch data from ALICE service into BOB service. Notice that in the response Stuff by Alice <port>, the port number keeps changing in round-robin fashion due to load balancing by Ribbon.