CODEWITHSUNDEEP
amazon-web-servicesaws-appsyncamplifyjs
Mohammad Harith
Mohammad Harith

Reputation: 619

AWS AppSync GraphQL API only return 20 items from DynamoDB

I'm try to run queries to AWS AppSync to fetch all list of Todos which I got around 50 items in DynamonDB but the result only return 20 items in my web, is there any limitation for AppSync?

I used amplify library to run the query:

API.graphql(
        graphqlOperation(queries.listTodos)
    )

How could I get all the 50 items from my dynamoDB?

Query:

export const listTodos = `query ListTodos(
  $filter: TableTodoFilterInput
  $limit: Int
  $nextToken: String
) {
  listTodos(filter: $filter, limit: $limit, nextToken: $nextToken) {
    items {
      id
      dateIn
      dateOut
      reservedBy
      status
      ttl
      createdON
    }
    nextToken
  }
}
`;

Sample data:

"items": [
        {
          "id": "ad2ce180-eae4-4bbd-abbc-00375e2dabd9",
          "dateIn": "2019-03-13",
          "dateOut": "2019-03-16",
          "reservedBy": "Harith",
          "status": "Pending Payment",
          "ttl": 1552357596,
          "createdON": "2019-03-11T02:26:36.608Z"
        },

Upvotes: 1

Views: 4888

Answers (1)

Aaron_H
Aaron_H

Reputation: 1683

In your listTodos resolver's Request mapping template probably has the following line:

"limit": $util.defaultIfNull(${ctx.args.limit}, 20),

Change this limit to something other than 20, or make it really high if you don't want results to be limited. (Note: DynamoDB will automatically paginate once your result set reaches 1 MB.) However it's typically a good practice to have some kind of reasonable limit set for Scan operations, as a Scan operation can consume 100% of the provisioned read capacity of the table and throttle other requests to your table. This is especially important as your table grows in size, but for 50 records, this shouldn't be an issue.

Upvotes: 4

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