Setup

Update infra/template.yaml by adding/updating:

a. AppSyncApiKey b. API c. Schema d. Dynamo DB table e. Data source f. Resolvers

and define your graphql schema inside infra/src/schema.graphql

Build the app:

sam build
sam deploy --profile <profile> --stack-name

update the queries in

This command will use the configuration already provided inside the infra/src/schema.graphql file.

Guide

Resolver: a resolver is a unit of code that handles how that field's data will be resolved when a request is made to the service. They are most commonly used to implement the state-changing operations for your query, mutation, and subscription field operations. In this case they contains the logic to speak with DynamoDB Table. See Resolvers.
Data Source: The schema is like a gateway that handles all requests made to the server. When a request is made, the schema acts as the single endpoint that interfaces with the client. The schema will access, process, and relay data from the data source back to the client. See Data Source.