AWS – AWS AppSync launches new API command to test GraphQL resolvers

AWS AppSync is a fully managed service that makes it easy to create and manage GraphQL and Pub/Sub APIs, allowing developers to securely access, manipulate, and combine data from one or more data sources via a single API endpoint. With GraphQL, developers write resolvers that fetch data from backend data sources such as Amazon DynamoDB, AWS Lambda, HTTP APIs, and more. To “resolve” a GraphQL query at run-time, AppSync evaluates the resolver code with the contextual information about the query (e.g.: the context). AppSync resolvers are written in the Velocity Template Language (VTL) and support flexible integrated utilities that allow developers to parse (e.g.: $util.parseJson), convert (e.g.: $util.toJson), generate (e.g.: $util.autoId and $util.autoUlid), and log data (e.g.: $util.log).

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