td2106 / cdp-assignment

What Services are in this project ?

Application server

• Accepts and returns a response according to a specific JSON format
• Only has 1 API
• Also do some validation for that request, if not valid request will return an error

Eureka server

• Acts as a service registry for application server instances
• Upon booting the application servers will register with the eureka server, so we can retrieve the instances address from the eureka server

Routing server

• Can only route post request for now
• Will forward requests to one of the application server instances
• Runs a periodic task every 60s to update the list of available servers
• Uses simple round-robin algorithm

How to run

Gradle

//build
export JAVA_HOME=path_to_java_11 && ./gradlew clean build
// run eureka server
./gradlew bootRun eureka_server
// Run application server(s)
PORT=XXX ./gradlew :application_server:bootRun
// Run routing server
./gradlew :routing_server:bootRun

Docker compose

// To be defined, still not figured out all the bugs yet

Some possible improvements

• Add more tests to cover more cases
• Add more routing algorithms to routing server so that it can take into request / response time in real time
• Optimize docker images and fix docker compose related bugs for better containerization experiences