Schema, Resolvers & PubSub Schema & Resolver type Subscription { messageAdded(channelId: ID!): Message } type Mutation { sendMessage(channelId: ID!, text: String!): Message } const { PubSub, withFilter } = require('graph…
ReadScaling & Production Considerations Scaling Across Instances An in-memory PubSub only knows about events published within its own process. If a mutation lands on instance A but a subscriber's WebSocket is held open by in…
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