serverless.yml

provider:
    iamRoleStatements:
        - Effect: Allow
          Action: [dynamodb:Query, dynamodb:Scan, dynamodb:GetItem, dynamodb:PutItem, dynamodb:UpdateItem, dynamodb:DeleteItem]
          Resource:
              Fn::GetAtt: [ChirpCache, Arn]
        - Effect: Allow
          Action: [sqs:SendMessage, sqs:DeleteMessage]
          Resource:
              Fn::GetAtt: [ TwitterQueue, Arn ]
              
resources:
    Resources:
        ChirpCache:
            Type: AWS::DynamoDB::Table
            Properties:
                TableName: chirp_cache
                AttributeDefinitions:
                    - AttributeName: key
                      AttributeType: S
                KeySchema:
                    - AttributeName: key
                      KeyType: HASH
                ProvisionedThroughput:
                    ReadCapacityUnits: 5
                    WriteCapacityUnits: 5
        TwitterQueue:
            Type: AWS::SQS::Queue
            Properties:
                RedrivePolicy:
                    maxReceiveCount: 3
                    deadLetterTargetArn:
                        Fn::GetAtt: [ DeadLetterQueue, Arn ]
        DeadLetterQueue:
            Type: AWS::SQS::Queue
            Properties:
                MessageRetentionPeriod: 1209600 # 14 days.