GraphQL is getting increasingly popular and many big companies like GitHub, Twitter and Shopify are already using it in production. In this talk, I want to demonstrate one of the newer and less-known GraphQL features: Realtime Subscriptions. After a quick introduction to
the basics of GraphQL, we'll build a realtime messenger app with React and Apollo Client. I'll highlight the requirements for building a subscription server that works with Apollo and introduce best practices for implementing subscriptions on the frontend.