Node.js · Senior · Question 46 of 75

What is `diagnostics_channel` for?

✓Correct answer: Letting libraries publish named diagnostic events that tracing and monitoring tools subscribe to with low overhead
2Debugging over a network channel
3Sending logs to a remote server

Explanation

Node.js core (http, undici) and libraries like Fastify publish events through it, so APMs don't need to monkey-patch modules.

Further reading

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