class aws_cdk.aws_lambda_event_sources.DynamoEventSource(table, *, batch_size=None, bisect_batch_on_error=None, enabled=None, max_batching_window=None, max_record_age=None, on_failure=None, parallelization_factor=None, report_batch_item_failures=None, retry_attempts=None, starting_position, tumbling_window=None)

Bases: aws_cdk.aws_lambda_event_sources.StreamEventSource

Use an Amazon DynamoDB stream as an event source for AWS Lambda.


import aws_cdk.aws_dynamodb as dynamodb
from aws_cdk.aws_lambda_event_sources import DynamoEventSource, SqsDlq

# table is of type Table

# fn is of type Function

dead_letter_queue = sqs.Queue(self, "deadLetterQueue")
  • table (ITable) –

  • batch_size (Union[int, float, None]) – The largest number of records that AWS Lambda will retrieve from your event source at the time of invoking your function. Your function receives an event with all the retrieved records. Valid Range: - Minimum value of 1 - Maximum value of: - 1000 for {@link DynamoEventSource} - 10000 for {@link KinesisEventSource} Default: 100

  • bisect_batch_on_error (Optional[bool]) – If the function returns an error, split the batch in two and retry. Default: false

  • enabled (Optional[bool]) – If the stream event source mapping should be enabled. Default: true

  • max_batching_window (Optional[Duration]) – The maximum amount of time to gather records before invoking the function. Maximum of Duration.minutes(5) Default: Duration.seconds(0)

  • max_record_age (Optional[Duration]) – The maximum age of a record that Lambda sends to a function for processing. Valid Range: - Minimum value of 60 seconds - Maximum value of 7 days Default: - the retention period configured on the stream

  • on_failure (Optional[IEventSourceDlq]) – An Amazon SQS queue or Amazon SNS topic destination for discarded records. Default: discarded records are ignored

  • parallelization_factor (Union[int, float, None]) – The number of batches to process from each shard concurrently. Valid Range: - Minimum value of 1 - Maximum value of 10 Default: 1

  • report_batch_item_failures (Optional[bool]) – Allow functions to return partially successful responses for a batch of records. Default: false

  • retry_attempts (Union[int, float, None]) – Maximum number of retry attempts Valid Range: * Minimum value of 0 * Maximum value of 10000. Default: - retry until the record expires

  • starting_position (StartingPosition) – Where to begin consuming the stream.

  • tumbling_window (Optional[Duration]) – The size of the tumbling windows to group records sent to DynamoDB or Kinesis Valid Range: 0 - 15 minutes. Default: - None



Called by lambda.addEventSource to allow the event source to bind to this function.


target (IFunction) –

Return type




The identifier for this EventSourceMapping.

Return type