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Cognito JWT customization using Go Lambda triggers lets you add private claims to ID tokens through the PreTokenGeneration user pool trigger.

DynamoDB map unmarshalling in Go lets you convert nested key-value attributes into strongly typed structs using custom UnmarshalDynamoDBAttributeValue methods.

AWS HealthLake change data capture using CloudTrail, EventBridge, and Step Functions enables event-driven workflows for FHIR resource mutations.

VTL mapping templates in API Gateway transform Step Functions output into custom HTTP responses with dynamic status codes and JSON payloads.

Creating a Cognito User with AWS Step Functions native SDK integrations

API Gateway base path mapping with CDK routes multiple REST APIs under a single custom domain name while disabling default execute endpoints.

AWS HealthLake querying with Go requires signed REST API requests to fetch FHIR Bundles and Patient resources from your datastore endpoint.

Kinesis poison pill messages block stream processing for hours when Lambda event sources fail, but CDK event source configurations can solve this.

Step Functions async integration with API Gateway via CDK enables durable webhook-style endpoints that return immediately while workflows execute.

HTTP request tracing in Go with Datadog wraps the standard HTTP client to generate spans with method and URL details in your flame graphs.

Lambda observability with Datadog and Golang covers setting up structured JSON logging, distributed tracing with spans, and correlating them together.

re:Invent 2022 recap

AWS CDK Pipelines construct provides an opinionated CI/CD pipeline with self-mutation, cross-account deploys, and automatic source monitoring.

AWS CDK lets developers define cloud infrastructure using familiar programming languages like TypeScript, enabling testing and reusable constructs.