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PCA
Instrumentation and Exporters
medium
Question 3 of 32

A team proposes adding a user_id label to a high-volume request metric so every user's traffic can be queried directly. What is the Prometheus guidance?

AThis is recommended because labels are free
BThis is risky because high-cardinality labels can create too many time series
CIt is safe as long as the metric name ends with _total
DIt is required when using rate()

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