Debugging Serverless Applications
Discover techniques for effectively debugging Lambda functions, including local testing, remote debugging, and interpreting CloudWatch logs for issue resolution.
Intro to Debugging Lambda
Debugging serverless applications, especially AWS Lambda functions, presents unique challenges. Unlike traditional applications, Lambdas are stateless and ephemeral.
In this lesson, we'll explore practical techniques for effectively identifying and resolving issues in your Lambda functions, from local testing to interpreting logs.
Why Serverless Debugging is Unique
Traditional debugging often involves stepping through code line-by-line using an IDE. With Lambda, this isn't always straightforward because:
- Ephemeral Nature: Functions run only when invoked, then disappear.
- Statelessness: No persistent memory between invocations.
- Distributed Systems: Issues can arise from interactions between many services.
We rely heavily on logs, metrics, and tracing to understand what's happening.
All lessons in this course
- CloudWatch Logs and Metrics
- Error Handling and Retries
- Debugging Serverless Applications
- Custom Metrics and CloudWatch Alarms