問題文
A client identifier is known at the start of a request and the team wants it available on spans, metrics and logs produced by several downstream services. Which mechanism carries it?
選択肢
- The Trace Flags field of the span context, which each service reads on arrival.
- The span name of the root span.
- Baggage, which is a key-value store propagated alongside the context.
- A Resource attribute set on the first service, because the Resource is exported with every record and therefore reaches the downstream services along the way.