Monitoring in AWS

Create Lambda function

1. Go to Lambda -> Create function.
2. Select Author from scratch, name your lambda function "udacity" and leave the remaining options at their default.
3. Click Create function.

This will create a Lambda function with the following basic code:

exports.handler = async (event) => {
    // TODO implement
    const response = {
        statusCode: 200,
        body: JSON.stringify('Hello from Lambda!'),
    };
    return response;
};

Run Lambda function

1. Configure a test event

2. Name the test and click Save.
3. Click the Test button several times

Monitor

Monitor in the Lambda interface

Switch to the Monitoring tab and click Test several more times. Wait a few minutes and refresh the monitoring charts. You will see that the number of Invocations, Duration and Error counts are tracked in the Lambda interface.

Monitor in CloudWatch

1. Go to the CloudWatch service. Then select Metrics -> Lambda.

2. By Function Name
3. Select the function name of "udacity" and "Invocations."

Lambda monitoring

CloudWatch Metrics monitoring