AWS Lambda Explained: Top 20 Common Questions and Answers

here are the top 20 AWS Lambda questions and answers:

1. What is AWS Lambda? Answer: AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers.

2. What programming languages does AWS Lambda support? Answer: AWS Lambda supports a variety of programming languages, including Java, Go, PowerShell, Node.js, C#, Python, and Ruby.

3. How does AWS Lambda pricing work? Answer: AWS Lambda pricing is based on the number of requests and the duration of each request. You only pay for the compute time you consume.

4. What is an AWS Lambda function? Answer: An AWS Lambda function is a piece of code that runs in response to an event and can perform any number of actions.

5. How do you create an AWS Lambda function? Answer: You can create an AWS Lambda function using the AWS Management Console, AWS CLI, or AWS SDKs.

6. What is an event source in AWS Lambda? Answer: An event source is something that triggers an AWS Lambda function to run. It can be an AWS service, such as S3 or DynamoDB, or a custom event source.

7. How do you handle errors in an AWS Lambda function? Answer: You can handle errors in an AWS Lambda function by using try-catch blocks or by logging errors to a service like CloudWatch Logs.

8. What is the maximum amount of memory you can allocate to an AWS Lambda function? Answer: The maximum amount of memory you can allocate to an AWS Lambda function is currently 10,240 MB.

9. What is the maximum duration of an AWS Lambda function? Answer: The maximum duration of an AWS Lambda function is currently 15 minutes.

10. How do you configure environment variables in an AWS Lambda function? Answer: You can configure environment variables in an AWS Lambda function using the AWS Management Console, AWS CLI, or AWS SDKs.

11. How do you enable VPC access for an AWS Lambda function? Answer: You can enable VPC access for an AWS Lambda function by selecting a VPC and subnet in the function's configuration.

12. What is AWS Lambda Layers? Answer: AWS Lambda Layers is a feature that lets you package and share libraries, custom runtimes, and other dependencies across multiple AWS Lambda functions.

13. What is AWS Lambda@Edge? Answer: AWS Lambda@Edge is a feature that lets you run Lambda functions at AWS edge locations to customize content delivery and improve performance.

14. How do you deploy an AWS Lambda function? Answer: You can deploy an AWS Lambda function using the AWS Management Console, AWS CLI, or AWS SDKs.

15. How do you test an AWS Lambda function? Answer: You can test an AWS Lambda function using the AWS Management Console, AWS CLI, or by invoking the function directly.

16. What is AWS Lambda concurrency? Answer: AWS Lambda concurrency is the number of requests that a function can handle at the same time.

17. How do you monitor an AWS Lambda function? Answer: You can monitor an AWS Lambda function using CloudWatch Metrics, CloudWatch Logs, and other AWS services.

18. How do you optimize the performance of an AWS Lambda function? Answer: You can optimize the performance of an AWS Lambda function by adjusting its memory allocation, reducing its code size, and using concurrency settings.

19. What is AWS Lambda Destinations? Answer: AWS Lambda Destinations is a feature that lets you configure the destination of asynchronous invocations for better error handling and monitoring.

20. How do you troubleshoot an AWS Lambda function? Answer: You can troubleshoot an AWS Lambda function by reviewing its logs, monitoring its metrics, and testing it with different input values.