Error Handling and Retries
Implement robust error handling, dead-letter queues, and retry mechanisms for resilient serverless applications.
Build Resilient Serverless Apps
In serverless architectures, things can go wrong. Network issues, service outages, or bugs in your code can all lead to failures.
Building resilient applications means they can recover gracefully from these issues, minimizing impact on users and preventing data loss. Error handling and retries are key to this.
Lambda Invocation Types
How Lambda handles errors and retries depends on how your function is invoked. There are two main types:
- Synchronous: The caller waits for a response (e.g., API Gateway, ALB).
- Asynchronous: The caller doesn't wait; Lambda queues the event (e.g., S3, SNS, SQS, EventBridge).
Each type has different retry behaviors by default.