Federation Example Project

This is an example project to demonstrate how we can use Apollo Federation + Apollo Gateway to create a federated gateway across our microservices.

For the sake of simplicity I've created two services here - Post and Comment, which sit behind a Gateway.

Setup

1. cd post and yarn start - Server will run on http://localhost:4001
2. cd comment and yarn start - Server will run on http://localhost:4002
3. cd gateway and yarn start - Gateway will run on http://localhost:4000

Go to http://localhost:4000 (which is the gateway endpoint)

Access comments from list of posts

query {
  posts {
    id
    title
    content
    postComments {
      id
      title
      content
      postId
    }
  }
}

Access parent post from list of comments

query {
  comments {
    id
    title
    postId
    post {
      id
      title
    }
  }
}