This repository contains an example implementation of microservices for a fictional lending company. I created this in 2018 when I was discussing as a potential employment to showcase what can be done with Java, Sprint-boot and GraphQL.
As the code has been written in 2018 it doesn't use up-to-date dependencies but I share this in case it can be useful to someone.
- the
microservicesdirectory contains a Spring-boot starter that configures common things used by all other microservices (like logging format, automatic propagation of authentication JWT token via Feign client, JSON parser configuration) and also a Gradle plugin (used by all microservices'build.gradleto setup common matters). - the
scoring-servicedirectory contains a microservice that checks if a person can be given a loan or not (very simple implementation that checks if the monthly income is higher than a threshold). - the
user-servicedirectory contains a service that manages user credentials. This is the service that contains the most documented code and APIs. - the
lending-servicemicroservice manages the user lending account (currently only basic actions like withdraw and deposit) and usesscoring-serviceduring the account opening procedure. frontend-serviceis a backend-for-frontend implementation that exposes data to the UI and also manages user sessions. It talks directly touser-serviceandlending-serviceand exposes a GraphQL interface.uicontains a React project for the web site.generator-microserviceis a Yeoman generator that creates new microservice projects ready to be run.
- a Redis instance run on port 6379 (see the script inside docker/redis to start one in docker).
- a Zipkin instance run on port 9411 (see the script inside docker/zipkin to start one in docker).
- an environment variable
MICROSERVICES_REPO_PATHpointing to a directory in the local file system where to host an artifact repository.