Recently I've started playing with Kotlin programming language, and wanted to give it a try. Kotlin gives us possibility to write quite concise code.
I've built sample, small micro-service, composed of some kind of simple api-gateway or proxy server, implemented using Spring Boot and Netflix Zuul
library for proxying requests to downstream servers.
The api-gateway which is public facing proxy server doesn't do more than just forwarding request to downstream user-service micro-service.
User service is implemented in Spring Boot, using Kotlin as a language of choice, having MongoDB as persistent storage. It has only two APIs - create user and retrieve user.
I'm using command line to test these APIs. Idea is to call api-gateway that just downstream request to user-service. This kind
of simulates some real-life scenarios of how you might organize your service oriented architectures.
docker-compose comes quite handy to start / shutdown all the services with simple commands and orchestrate them via docker-compose.yaml configuration file.
You can find and download source code from GitHub. Readme file there explains how to start & use services.
That was all for today! Hope you liked it!