First, start kafka and kafdrop (kafka ui interface) running the command:

docker-compose up -d

To start all applications at the same time, run the following command:

pnpm run dev

This command should start the ms-auth & ms-voting microservices and the api-gateway application

Make a post call to http://localhost:3000 sending a JSON body like so:

{
	"userId": "456",
	"votingId": "111",
	"vote": "F"
}

where:

• userId can be '123' or '456'
• votingId can be any string
• vote can be any string

You should see something like this into application LOG:

ms-voting:dev: User Peter Smith voted F for the voting 111

This simple monorepo shows how to setup microservices to communicate (kind of) each other using synch/asynch messages through Kafka.

It uses request-response message style and event-based message style.

For voting service, the ms uses event-based style.

For getting user information, the ms uses message-response style.