How do I set up GraphQL subscriptions in my application?

How do I set up GraphQL subscriptions in my application?

To set up GraphQL subscriptions, you'll need to use a WebSocket server. Are you using Apollo Server or another framework?

I'm using Apollo Server. What are the steps I should follow?

First, install the necessary packages like graphql-subscriptions and subscriptions-transport-ws. Then, configure your Apollo Server to handle WebSocket connections.

Can you provide a code example for that?

Sure! Here's a basic example:

const { ApolloServer } = require('apollo-server');
const { SubscriptionServer } = require('subscriptions-transport-ws');
const { execute, subscribe } = require('graphql');

const server = new ApolloServer({ /* your config */ });

server.listen().then(({ url }) => {
  new SubscriptionServer({
    execute,
    subscribe,
    schema,
  }, {
    server: httpServer,
    path: server.graphqlPath,
  });
});