Scenario: You need to create a serverless API that triggers AWS Lambda functions based on HTTP requests. Which AWS service would you use to manage the API endpoints and integrate with AWS Lambda?
- Amazon API Gateway
- AWS Lambda itself
- Amazon SQS
- AWS Step Functions
Amazon API Gateway is the correct option as it is a fully managed service designed for managing API endpoints and integrating with AWS Lambda for triggering functions based on HTTP requests.
What are custom event sources in AWS Lambda?
- Built-in AWS services
- External services or applications
- Lambda-managed sources
- On-premises data centers
Custom event sources in AWS Lambda refer to external services or applications that can trigger the execution of Lambda functions by emitting custom events.
How do custom event sources differ from standard event sources in AWS Lambda?
- Customizability
- Built-in compatibility
- Scalability
- Performance
Custom event sources offer more flexibility and customization options compared to standard event sources, allowing developers to define their own event formats and sources.
What is the significance of integrating custom event sources with AWS Lambda?
- Cost reduction
- Extensibility
- Latency reduction
- Security enhancement
Integrating custom event sources with AWS Lambda extends the capabilities of Lambda functions, allowing them to respond to a wider range of events from external sources.
What are some examples of custom event sources that can trigger AWS Lambda functions?
- AWS Step Functions, AWS Glue, AWS CodePipeline
- Amazon API Gateway, Amazon CloudFront, Amazon S3
- Amazon EC2, Amazon RDS, Amazon DynamoDB
- Amazon SQS, Amazon SNS, Amazon Kinesis
Custom event sources for AWS Lambda include services like Amazon SQS, Amazon SNS, and Amazon Kinesis, allowing you to trigger functions in response to messages, notifications, and streaming data.
What are the advantages of using custom event sources for AWS Lambda over traditional event sources?
- Built-in integration
- Flexibility and extensibility
- Higher reliability
- Lower latency
The advantages of using custom event sources for AWS Lambda over traditional event sources include flexibility and extensibility, allowing you to integrate with a wide range of services and systems beyond those natively supported by AWS Lambda.
In what scenarios would you recommend using custom event sources with AWS Lambda?
- Database management
- Integration with third-party services
- Internal service communication
- Load balancing
Custom event sources in AWS Lambda are recommended when integrating with third-party services that generate events not natively supported by AWS services.
How are CloudWatch Metrics different from CloudWatch Logs?
- Metrics are stored in S3, while logs are stored in DynamoDB
- Metrics are used for monitoring, while logs are used for security
- Metrics store text-based data, while logs store numerical data
- Metrics track performance data over time, while logs capture real-time events and information
CloudWatch Metrics track performance data over time, while CloudWatch Logs capture real-time events and information, serving different purposes in monitoring and troubleshooting.
What are some common AWS services that automatically publish CloudWatch Metrics?
- AWS Lambda, Amazon SQS, Amazon DynamoDB
- Amazon CloudFront, AWS IAM, AWS Elastic Beanstalk
- Amazon EC2, Amazon RDS, Amazon S3
- Amazon Redshift, Amazon EKS, AWS Glue
Amazon EC2, Amazon RDS, and Amazon S3 are among the AWS services that automatically publish CloudWatch Metrics, providing insights into resource utilization and performance.
How do you configure custom event sources to trigger AWS Lambda functions?
- By configuring IAM roles
- By creating event source mappings
- By directly invoking the function
- By setting up AWS CloudWatch alarms
Custom event sources are configured to trigger AWS Lambda functions by creating event source mappings, which link a specific event source to a Lambda function, allowing it to trigger in response to events from that source.