Why should you care?

AwsVerse debugs slow checkout by seeing which microservice adds 800 ms in the trace map.

See it live — copy this example

Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).

const AWSXRay = require('aws-xray-sdk-core');
const AWS = AWSXRay.captureAWS(require('aws-sdk'));
exports.handler = AWSXRay.captureAsyncFunc('processOrder', async (event) => {
  AWSXRay.captureHTTPsGlobal(require('https'));
  return { statusCode: 200, body: 'ok' };
});

What happened?

• X-Ray SDK wraps AWS SDK and HTTPS calls to emit subsegments.
• Enable active tracing on Lambda for automatic service map.

Practice next

1. Enable X-Ray on Lambda active tracing.
2. Invoke API; open X-Ray service map.
3. Find slowest subsegment in trace detail.
4. Add custom annotation tenantId on segments.
5. Link X-Ray trace to CloudWatch Logs Insights.

Remember

X-Ray = distributed tracing. Service map shows dependencies. Sample traces in high traffic.

AwsVerse checkout trace

p99 checkout latency doubled overnight.

Outcome: X-Ray shows new external tax API adds 600 ms per request.