In the asynchronous event queue, up to 6 hours. Maximum age of event – The maximum amount of time Lambda retains an event For more information on Lambda invocation metrics, Delivery errors can also occur due to permissions errors and size limits. This can happen if your configuration includes an unsupported destination type, such as an Amazon SQS FIFO queue or an Amazon SNS FIFO If Lambda can't send a record to a destination you have configured, it sends a DestinationDeliveryFailures metric toĪmazon CloudWatch. For dead-letter queues, Lambda only sends the content of the event, without Separate destinations for events that are processed successfully, and events that fail all processing attempts.Īlternatively, you can configure a standard Amazon SQS queue or standard Amazon SNS topic as a dead-letter The invocation record contains details about the request and response in JSON format. Note that SQS FIFO queues andĪmazon EventBridge – An EventBridge event bus. Lambda supports the followingĭestinations for asynchronous invocation. You can also configure Lambda to send an invocation record to another service. That Lambda performs, or to discard unprocessed events more quickly. You can configure error handling for a function to reduce the number of retries When an event expires or fails all processing attempts, Lambda discards it. When the queue is very long, new events might age out before Lambda has a chance to send them to your function. Ensure that your functionĬode gracefully handles duplicate events, and that you have enough concurrency available to handle all If the function can't keep up with incomingĮvents, events might also be deleted from the queue without being sent to the function. Multiple times because the queue itself is eventually consistent. Interval and reduces the rate at which it reads events from the queue.Įven if your function doesn't return an error, it's possible for it to receive the same event from Lambda If the queue contains many entries, Lambda increases the retry The retry interval increases exponentially from 1 secondĪfter the first attempt to a maximum of 5 minutes. For throttling errors (429) and system errors (500-series), Lambda returns the event to the queue andĪttempts to run the function again for up to 6 hours. If the function doesn't have enough concurrency available to process all events, additional requests are
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Function errors include errors returned by the function's code andĮrrors returned by the function's runtime, such as timeouts. Minutes between the second and third attempts. If the function returnsĪn error, Lambda attempts to run it two more times, with a one-minute wait between the first two attempts, and two Lambda manages the function's asynchronous event queue and attempts to retry on errors. If Lambda isn't able to add the event to the queue, the error message appears in the command
The output file ( response.json) doesn't contain any information, but is still created when you
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