AWS AppSync GraphQL Subscription Not Updating Clients with Latest Data
I need some guidance on I'm trying to figure out I'm currently working with AWS AppSync to implement real-time data updates for my web application using GraphQL subscriptions. Despite configuring everything as per the [AWS documentation](https://docs.aws.amazon.com/appsync/latest/devguide/graphql-subscriptions.html), I'm facing an issue where the clients connected through subscriptions are not receiving the latest updates. For instance, when a mutation occurs, I expect the subscription to push the updated data to all connected clients, but they only get notified of the initial state and not the subsequent changes. Here’s a snippet of my GraphQL schema: ```graphql schema { query: Query mutation: Mutation subscription: Subscription } type Query { getPosts: [Post] } type Mutation { createPost(title: String!, content: String!): Post } type Subscription { onCreatePost: Post @aws_subscribe(mutations: ["createPost"]) } type Post { id: ID! title: String! content: String! } ``` In my React application, I’m using the `@apollo/client` library to manage GraphQL operations. The subscription is set up like this: ```javascript const { data, loading, error } = useSubscription(ON_CREATE_POST); ``` The mutation to create a post looks like this: ```javascript const CREATE_POST = gql` mutation CreatePost($title: String!, $content: String!) { createPost(title: $title, content: $content) { id title content } } `; const handleCreatePost = async () => { await createPost({ variables: { title: newTitle, content: newContent } }); }; ``` I have also checked the IAM permissions and ensured that the AppSync API has the correct permissions to invoke the Lambda function that handles the mutation. However, I am not seeing any errors in the console, and the data returned from the mutation seems correct, as it shows the latest post created, but the subscription doesn't update the clients. Is there something I might be missing in the setup or is there a common pitfall that could cause this issue? Any insights would be appreciated. I'm working on a CLI tool that needs to handle this. Is this even possible?