Module sampling 

Sampling strategies for distributed tracing.

Sampling controls which traces are recorded and exported. The decision is made at the trace root (head-based sampling) and propagated to all child spans via the FLAG_SAMPLED bit in TraceContext::flags.

Structs

Sampler

A sampler that decides whether a trace should be recorded.

SamplingConfig

Sampling configuration.

Enums

SamplingStrategy

Sampling strategy enumeration.