AWS Lambda run code in response to events such as an HTTP request.
A lambda function (Serverless code) can defined using AWS SAM.
AWS Lambda automatically monitors Lambda functions and reports metrics through Amazon CloudWatch. To help you monitor your code as it executes, Lambda automatically tracks the number of requests, the latency per request, and the number of requests resulting in an error and publishes the associated metrics. (Select Monitoring to view the log).
You can leverage these metrics to set custom alarms with Amazon CloudWatch
The Monitoring tab will show six CloudWatch metrics:
- Invocation count,
- Invocation duration,
- Invocation errors,
- Throttled invocations,
- Iterator age,
- and DLQ errors.
Use in AWS
Lambda is integrated with:
- data stores such as:
- Kinesis Data Streams
- event sources ??
amplify function invoke <resourcename>
With the AWS SAM CLI, you can invoke Lambda functions locally.
- Up: Example with java spark