Check this out if you understand scala:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;sangria-graphql&#x2F;sangria-akka-http-example" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;sangria-graphql&#x2F;sangria-akka-http-example</a><p>Pulling data from a datastore is up to you. You can use whatever library you like to pull data in. All you have to do is make your `resolve` methods just return the data.<p>The GraphQL schema definition is basically an adapter (as in adapter pattern) on top of your datastore(s).