Deploy the Message-Function (of level 1) with a Dynamo-DB to persist the messages.

Notes:

• It is possible to keep using the same Image for the function. But you have to provide a environment varibale and a policy, to persist the data.
• Deploy a Dynamo-DB with CDK:
  • Create a Partition-Key with the name id of type String.
  • Create a Table (with your project name as a prefix).
  • Set the removalPolicy for the table to DESTROY. This configuration ensures that your Stack is reproducible.
• Connect the database to your Message-Function.
  • Set the environment variable DYNAMODB_TABLE_NAME to <YOUR_TABLE_NAME>.
  • Add a new policy to the Lambda-Function. Use the Action dynamodb:PutItem with the Effect ALLOW with a reference to your Table-resource.
• Check the AWS UI if the messages are persisted.

Please note: The creation of the Table and Partition-Key needs a few seconds. A great opportunity for some pizza 🍕