__________ 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.
Scenario: You need to replicate S3 objects across multiple AWS regions and trigger AWS Lambda functions in each region. How would you design the architecture to achieve this requirement?
- Implement custom scripts to manage object replication and Lambda invocation
- Manually copy S3 objects to each region and trigger Lambda functions
- Use AWS Lambda destinations to replicate objects and trigger functions
- Use S3 cross-region replication to replicate objects and trigger Lambda functions in each region
Using S3 cross-region replication to replicate objects and trigger Lambda functions in each region is the most efficient way to achieve the requirement of replicating S3 objects across multiple regions and triggering functions.
Scenario: Your team is aiming to optimize API performance and reduce costs. How would you leverage API Gateway features to implement caching and rate limiting for AWS Lambda-backed APIs?
- Use API Gateway caching to cache responses
- Use API Gateway request throttling
- Use API Gateway usage plans for rate limiting
- Use AWS Lambda concurrency limits
By leveraging API Gateway caching to cache responses and API Gateway request throttling to limit request rates, you can optimize API performance and reduce costs for Lambda-backed APIs.
How can you configure AWS Lambda to filter S3 events based on object prefixes?
- Bucket filtering
- Content filtering
- Prefix filtering
- Suffix filtering
AWS Lambda allows you to configure prefix filtering on S3 event notifications, enabling you to specify object prefixes for filtering events.
What are some considerations for handling large numbers of S3 event notifications in AWS Lambda?
- Concurrent executions
- Disk space
- Memory allocation
- Network bandwidth
Considerations for handling large numbers of S3 event notifications in AWS Lambda include managing concurrent executions and scaling strategies.
S3 events can trigger AWS Lambda functions in response to changes in __________.
- Amazon EC2 instances
- Amazon RDS databases
- Amazon S3 buckets
- Amazon SQS queues
S3 events can trigger AWS Lambda functions in response to changes in Amazon S3 buckets, such as object creation, deletion, or modification.
AWS Lambda functions invoked by S3 events receive information about the event, including the __________ that triggered the function.
- Bucket name
- Event timestamp
- Event type
- Object key
AWS Lambda functions invoked by S3 events receive information about the event, including the object key that triggered the function, allowing you to process the relevant object.
To filter S3 events based on object prefixes, you can specify a __________ in the event configuration.
- Metadata filter
- Prefix filter
- Size filter
- Suffix filter
To filter S3 events based on object prefixes, you can specify a prefix filter in the event configuration, allowing you to narrow down which objects trigger the Lambda function.
AWS Lambda can process S3 events in __________ mode, allowing you to handle high volumes of events.
- Batch
- Real-time
- Sequential
- Stream
AWS Lambda can process S3 events in batch mode, allowing it to handle high volumes of events efficiently by batching multiple events together for processing.