Error Handling and Retries

In serverless applications, things can go wrong. Your function might fail, a dependency might be unavailable, or an event might be malformed.

Robust error handling is crucial for building resilient systems that can recover gracefully and notify you when issues occur. This lesson explores how AWS Lambda helps you achieve this.

When working with Lambda, it's helpful to understand different types of errors:

• Invocation Errors: Problems occurring before your code runs, like incorrect IAM permissions for Lambda to read from an event source.
• Function Errors: Exceptions thrown by your function code, timeouts, or out-of-memory errors. These are the errors you primarily handle within your code.
• Service Errors: Rare issues with the underlying AWS Lambda service itself.