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.
__________ is a feature of API Gateway that allows you to define request and response transformations when integrating with AWS Lambda.
- API keys
- Authorization policies
- Mapping templates
- Rate limiting
Mapping templates in API Gateway allow you to define transformations for incoming requests and outgoing responses, facilitating integration with AWS Lambda.
AWS Lambda functions integrated with API Gateway can be associated with __________, allowing for fine-grained access control.
- Environment variables
- IAM roles
- Security groups
- VPC endpoints
AWS Lambda functions integrated with API Gateway can be associated with IAM roles, allowing for fine-grained access control based on the permissions assigned to the IAM role.
API Gateway can enforce __________ on incoming requests before allowing them to reach AWS Lambda.
- Authentication and authorization
- Data encryption
- Load balancing
- Rate limiting
API Gateway can enforce authentication and authorization on incoming requests before allowing them to reach AWS Lambda, ensuring only authorized users or systems can access the functions.
__________ is a feature of API Gateway that caches responses from AWS Lambda functions to improve latency and reduce costs.
- Cross-origin resource sharing (CORS)
- Request logging
- Response caching
- Traffic shaping
Response caching in API Gateway allows for the caching of responses from AWS Lambda functions to improve latency and reduce costs.
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.