Client Side Load Balancing Using Spring Boot And Netflix Ribbon

Three mirror endpoints has been exposed which takes request from the client then forwards the request to the service instance

• /login (GET)
  • Netflix Ribbon is used to load balance the GET request selecting the server in round-robin fashion
  • It's ping the clients on filxed interval (configurable on application.yml) on / endpoint to check if the server is available
• /register (POST)
• /changePassword (POST)
  • With custom implementation the POST requests are forwarded to all the servers and return the first successful response.
  • Spring-retry is used to retry the request until successful response is received or max-attempt (configurable on appliction.yml) is reached.

To run locally:

./gradlew bootRun

In your browser, go to http://localhost:8080/ port configurable in application.yml

Or create a runnable jar file:

./gradlew bootJar

The jar file is located in build/libs/loadBalancer-0.0.1-SNAPSHOT.jar Deploy the jar file and run it on any machine

java -jar build/libs/loadBalancer-0.0.1-SNAPSHOT.jar

You can also configure the port :

java -jar build/libs/loadBalancer-0.0.1-SNAPSHOT.jar --server.port=8080

The detail about the configuration is commented on application.yml properties. The configuration file application.yml is located at src.main.resources.config.application.yml