Standardize custom metrics with Powertools
Metrics creates custom metrics asynchronously by logging metrics to standard output following Amazon CloudWatch Embedded Metric Format (EMF).
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Using Powertools Metrics with TypeScript:
Install the library in your project:
npm install @aws-lambda-powertools/metrics
The Metrics utility must always be instantiated outside of the Lambda handler. In doing this, subsequent invocations processed by the same instance of your function can reuse these resources. This saves cost by reducing function run time. In addition, Metrics can track cold start and emit the appropriate metrics.
import { Metrics } from '@aws-lambda-powertools/metrics';
const metrics = new Metrics({ namespace: 'serverlessAirline', serviceName: 'orders' });
export const handler = async (_event, _context): Promise<void> => {
// ...
};
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