WebSocket API in Amazon API Gateway

CDK example of:

• WebSocket API using Amazon API Gateway WebSocketApi Construct
• Using $connect and $disconnect routes to manage connected users
• Using AWS.ApiGatewayManagementApi to send message from backend to connected clients

Final architecture:

Extra resources:

• About WebSocket APIs in API Gateway
• Managing connected users and client apps: $connect and $disconnect routes
• Documentation of class: AWS.ApiGatewayManagementApi
• Setup API Gateway WebSocket API with CDK
• Process DynamoDB streams with Lambda