AWS AppSync is a managed GraphQL service that simplifies application development by letting you create a flexible API to securely access, manipulate, and combine data from one or more data sources.
With today’s launch, AWS AppSync enables you to better understand the performance of your GraphQL requests and usage characteristics of your GraphQL schema fields. You can easily identify resolvers with large latencies that may be the root cause of a performance issue. You can also identify the most and least frequently used fields in your schema and assess the impact of deprecating GraphQL fields.
AWS AppSync now emits log events in a fully structured JSON format. This enables seamless integration with log analytics services such as Amazon CloudWatch Logs Insights and Amazon Elasticsearch Service, and other log analytics solutions. We have also added new fields to log events to increase your visibility into the performance and health of your GraphQL operations.
from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/05/aws-appsync-now-enables-more-visibility-into-performance-and-hea/