NestJS · Senior · Question 19 of 75

How do you propagate a trace or correlation ID across Nest microservices?

1Use a global variable
2IDs are propagated automatically by every transport
✓Correct answer: Put it in message headers/metadata, read it in an interceptor on the consumer side and store it in ALS; OpenTelemetry can automate this

Explanation

Consistent propagation lets you follow one user action through HTTP calls, queues and workers.

Further reading

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