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15 changes: 8 additions & 7 deletions packages/opentelemetry-core/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -16,9 +16,10 @@ This package provides default implementations of the OpenTelemetry API for trace
- [Composite Propagator](#composite-propagator)
- [Baggage Propagator](#baggage-propagator)
- [Built-in Sampler](#built-in-sampler)
- [Always Sampler](#always-sampler)
- [Never Sampler](#never-sampler)
- [Probability Sampler](#probability-sampler)
- [AlwaysOn Sampler](#alwayson-sampler)
- [AlwaysOff Sampler](#alwaysoff-sampler)
- [TraceIdRatioBased Sampler](#traceidratiobased-sampler)
- [ParentBased Sampler](#parentbased-sampler)
- [Useful links](#useful-links)
- [License](#license)

Expand Down Expand Up @@ -66,7 +67,7 @@ api.propagation.setGlobalPropagator(new HttpBaggage());

Sampler is used to make decisions on `Span` sampling.

#### AlwaysOn
#### AlwaysOn Sampler

Samples every trace regardless of upstream sampling decisions.

Expand All @@ -81,7 +82,7 @@ const tracerProvider = new NodeTracerProvider({
});
```

#### AlwaysOff
#### AlwaysOff Sampler

Doesn't sample any trace, regardless of upstream sampling decisions.

Expand All @@ -94,7 +95,7 @@ const tracerProvider = new NodeTracerProvider({
});
```

#### TraceIdRatioBased
#### TraceIdRatioBased Sampler

Samples some percentage of traces, calculated deterministically using the trace ID.
Any trace that would be sampled at a given percentage will also be sampled at any higher percentage.
Expand All @@ -116,7 +117,7 @@ const tracerProvider = new NodeTracerProvider({
});
```

#### ParentBasedSampler
#### ParentBased Sampler

- This is a composite sampler. `ParentBased` helps distinguished between the
following cases:
Expand Down