AWS Lambda recursive loop detection now available in all commercial AWS Regions
AWS Lambda recursive loop detection is now available in all commercial regions by default, automatically detecting and stopping recursive invocations between Lambda functions and supported services
AWS Lambda recursive loop detection is now available in all commercial regions. This default-enabled feature automatically detects and stops recursive invocations between Lambda functions and supported services, preventing runaway workloads. When using event sources like Amazon S3, SQS, and SNS to trigger Lambda functions, misconfigurations or code defects can cause events to return to the original source, leading to recursive loops, unintended usage, and unexpected billing. Upon detection, Lambda stops processing the event and sends an AWS Health Dashboard notification with troubleshooting steps. The feature works with supported SDK versions or later. Intentional recursive loops can be disabled using the PutFunctionRecursionConfig API.
Why it matters
This update is relevant for developers and operators who trigger Lambda functions using event sources, as it automatically prevents unexpected usage and billing from recursive loops.