Data definition – RecommendationService

Let's begin the technical development of our RecommendationService microservice by creating a container with the database that will be used. In the case of our microservices, we will use a database based on graphs—the Neo4j. The behavior of this database is very interesting, besides being easy to implement, thus being a perfect example for our application.

In our docker-compose.yml file, we make a small change by adding Neo4j to our stack:

    recommendation_db:
      image: neo4j:latest
      ports:
        - "7474:7474"
        - "7687:7687"
      environment:
        NEO4J_AUTH: "none"

With this simple particle of code, we already have an instance of Neo4j inside a Docker container.