Even though subscriptions are very much in progress from a specification point of view, the community came up with different approaches that are already employed in practice.

Here are some additional resources:

- RFC for GraphQL subscriptions: https://github.com/facebook/graphql/pull/267

- How to use Subscriptions in GraphiQL: https://dev-blog.apollodata.com/how-to-use-subscriptions-in-...

- Using GraphQL Subscriptions with Apollo: https://www.youtube.com/watch?v=wo9XFmW0W2c

If you want to use GraphQL subscriptions right now, I encourage you to try out our demo over at https://demo.graph.cool/worldchat/. I work at Graphcool :)