Node.js · Senior · Question 45 of 75

Which metrics form the RED method for monitoring a service?

1RAM, Events, Disk
✓Correct answer: Rate, Errors, Duration of requests
3Restarts, Exceptions, Deployments

Explanation

For Node.js also track event loop delay, heap usage, GC pauses and active handles. Use latency histograms (p95, p99), not just averages.

Further reading

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