Microservices Demo

A demo application with Java, Go, Javascript, Kafka and PostgresQL.

Architecture

• A front-end web app in Java which lets you vote between Tacos and Burritos
• A Kafka queue which collects new votes
• A Golang or worker which consumes votes from Kafka and stores them in PostgresQL
• A PostgresQL database
• A Node.js webapp which shows the results of the voting in real time

Run the demo application in Okteto

$ git clone https://github.com/okteto/microservices-demo-compose
$ cd microservices-demo-compose
$ okteto login
$ okteto deploy

Develop on the Result microservice

$ okteto up -f result/okteto.yml

Develop on the Vote microservice

$ okteto up -f vote/okteto.yml

Develop on the Worker microservice

$ okteto up -f worker/okteto.yml
$ make start

Notes

The voting application only accepts one vote per client. It does not register votes if a vote has already been submitted from a client.

This isn't an example of a properly architected perfectly designed distributed app... it's just a simple example of the various types of pieces and languages you might see (queues, persistent data, etc), and how to deal with them in Okteto.