How does AWS Lambda handle events from CloudWatch Events?
- CloudWatch Events cannot trigger Lambda functions
- CloudWatch Events invokes Lambda functions asynchronously
- CloudWatch Events invokes Lambda functions directly
- CloudWatch Events triggers Lambda functions synchronously
CloudWatch Events invokes Lambda functions asynchronously, allowing you to respond to events such as scheduled tasks, AWS API activity, or custom events.
What are some custom event sources that can trigger AWS Lambda functions?
- AWS Lambda can only be triggered by built-in AWS services
- AWS Lambda does not support custom event sources
- Amazon EC2, Amazon RDS, Amazon SQS
- Amazon S3, Amazon SNS, Amazon DynamoDB
These are some of the custom event sources that can trigger AWS Lambda functions. For example, changes to objects in an S3 bucket, messages published to an SNS topic, or updates to DynamoDB tables can all trigger Lambda functions.
How do Lambda limits and quotas affect the scalability of serverless applications?
- They can impact the ability to handle sudden spikes in traffic
- They have no effect on scalability
- They improve scalability by optimizing resource utilization
- They only affect cost, not scalability
Lambda limits and quotas, such as concurrent executions, can impact the ability of serverless applications to handle sudden spikes in traffic, potentially leading to throttling or failed invocations during peak loads.
Can AWS Lambda functions be triggered by events from AWS Step Functions?
- AWS Step Functions can only invoke AWS Lambda functions synchronously
- AWS Step Functions can only trigger AWS Lambda functions via HTTP requests
- No, AWS Lambda functions cannot be triggered by events from AWS Step Functions
- Yes, AWS Step Functions can trigger Lambda functions
AWS Step Functions can indeed trigger Lambda functions, allowing you to orchestrate workflows that involve multiple Lambda functions.
AWS Lambda functions can be triggered by events from various AWS services such as Amazon _________.
- EC2
- RDS
- S3
- SQS
AWS Lambda can be triggered by events from Amazon S3, such as object creation, deletion, or modification.
To process events from AWS services, AWS Lambda requires appropriate _________ to access the event source.
- API Gateway
- IAM permissions
- Lambda function name
- VPC configurations
AWS Lambda requires appropriate IAM permissions to access event sources from various AWS services securely.
Event sources for AWS Lambda can be configured to deliver events asynchronously using _________.
- AWS CLI
- AWS Lambda console
- AWS SDKs
- Event source mapping
Event source mapping allows for asynchronous delivery of events to Lambda from services like DynamoDB Streams or Kinesis Data Streams.
AWS Lambda integrates with Amazon __________ to process events in real-time.
- EventBridge
- RDS
- S3
- SQS
AWS Lambda integrates with Amazon EventBridge to process events in real-time, enabling event-driven architectures.
Custom event sources for AWS Lambda often require the implementation of AWS Lambda __________.
- Extensions
- Layers
- Policies
- Roles
AWS Lambda extensions can help in integrating custom event sources by extending the functionality of Lambda and providing event processing capabilities.
AWS Lambda can be configured to consume events from third-party services using __________ integrations.
- FTP
- REST API
- SMTP
- Webhook
AWS Lambda can consume events from third-party services using webhook integrations, enabling seamless integration with various platforms and services.