AWS Lambda introduces recursive loop detection APIs

The article describes new APIs introduced by AWS Lambda to control recursive loop detection for individual functions. Recursive loop detection is a built-in feature that stops Lambda functions caught in an infinite loop to prevent runaway workloads and unexpected billing.

Specifically, the article covers:

• An overview of recursive loop detection in Lambda, which detects and stops infinite loops between Lambda, SQS, and SNS after around 16 invocations
• Two new APIs: GetFunctionRecursiveConfig and PutFunctionRecursiveConfig to get and set recursive loop detection configuration for individual Lambda functions
• How to use the new APIs through the Lambda console, AWS CLI, CloudFormation, SAM, and CDK
• How to identify functions using recursive patterns by monitoring the RecursiveInvocationsDropped CloudWatch metric
• Conclusion advising to architect workloads to avoid recursive loops, but use the new APIs to opt out for specific functions if needed