Scenario: During testing, you encounter errors related to AWS Lambda function permissions. How would you troubleshoot and resolve these permission issues effectively?
- Analyze AWS CloudTrail logs
- Check AWS Lambda function configuration
- Contact AWS Support
- Review IAM Policies
Reviewing IAM policies associated with the AWS Lambda function and its execution role can help identify and resolve permission issues effectively.
What is the primary purpose of integrating API Gateway with AWS Lambda?
- Expose Lambda functions as HTTP endpoints
- Manage Lambda function deployments
- Scale Lambda functions automatically
- Store data processed by Lambda functions
The primary purpose of integrating API Gateway with AWS Lambda is to expose Lambda functions as HTTP endpoints, allowing clients to invoke the functions over HTTP.
API Gateway allows for the creation of __________, enabling the decoupling of client applications from AWS Lambda implementations.
- API endpoints
- Direct integrations
- Lambda functions
- Webhooks
API Gateway allows for the creation of API endpoints, enabling the decoupling of client applications from AWS Lambda implementations.
Scenario: You are building a microservices architecture where multiple AWS Lambda functions handle different API endpoints. How would you design API Gateway to efficiently route incoming requests to the corresponding Lambda functions?
- Use API Gateway custom headers
- Use API Gateway query parameters
- Use API Gateway resource paths and HTTP methods
- Use API Gateway stage variables
By using API Gateway resource paths and HTTP methods, you can efficiently route incoming requests to the corresponding Lambda functions based on the request path and method.
Scenario: Your application requires secure authentication for API requests before they reach AWS Lambda. How would you configure API Gateway to handle authentication and authorization?
- Use API Gateway API keys
- Use API Gateway custom authorizers
- Use API Gateway usage plans
- Use AWS IAM roles
By using API Gateway custom authorizers, you can configure secure authentication and authorization for API requests before they reach AWS Lambda, ensuring controlled access to API endpoints.
Can you configure AWS Lambda to process S3 events across multiple AWS regions?
- No, AWS Lambda can only process S3 events within the same region
- No, AWS Lambda does not support processing S3 events across multiple regions
- Yes, by configuring Lambda aliases
- Yes, by configuring event source mappings
AWS Lambda supports configuring event source mappings to process S3 events across multiple AWS regions, enabling cross-region event processing.
How can API Gateway manage throttling and caching for AWS Lambda-backed APIs?
- By configuring usage plans and setting caching options in API Gateway
- By directly adjusting Lambda function settings
- By modifying Lambda function code
- By adjusting networking configurations
API Gateway can manage throttling by configuring usage plans to limit the number of requests per second and caching by setting caching options to cache responses from AWS Lambda-backed APIs, improving performance and reducing latency.
What are the steps involved in configuring API Gateway to trigger AWS Lambda functions?
- Create a new API in API Gateway, define resources and methods, and configure integration settings to invoke Lambda functions
- Install additional SDKs
- Modify VPC settings
- Update Lambda function IAM roles
Configuring API Gateway to trigger Lambda functions involves creating a new API, defining resources and methods, and configuring integration settings to specify which Lambda function to invoke for each method.
How does API Gateway handle error responses from AWS Lambda functions?
- API Gateway forwards Lambda function errors to CloudWatch Logs
- API Gateway maps Lambda function error responses to HTTP error status codes
- API Gateway returns generic error messages for all Lambda function errors
- API Gateway terminates requests upon encountering a Lambda function error
API Gateway handles error responses from Lambda functions by mapping Lambda function error responses to appropriate HTTP error status codes, providing meaningful error messages to clients.
API Gateway provides __________ for AWS Lambda functions, allowing them to be exposed as HTTP endpoints.
- File storage
- HTTP APIs
- Message queues
- WebSocket support
API Gateway provides HTTP APIs for AWS Lambda functions, allowing them to be exposed as HTTP endpoints, enabling interaction with web clients.