CountingSampler (Brave 5.17.0 API)

java.lang.Object
- brave.sampler.Sampler
- - brave.sampler.CountingSampler

```
public final class CountingSampler
extends Sampler
```
This sampler is appropriate for low-traffic instrumentation (ex servers that each receive <100K requests), or those who do not provision random trace ids. It is not appropriate for collectors as the sampling decision isn't idempotent (consistent based on trace id).
Implementation

This initializes a random bitset of size 100 (corresponding to 1% granularity). This means that it is accurate in units of 100 traces. At runtime, this loops through the bitset, returning the value according to a counter.

Field Summary
- Fields inherited from class brave.sampler.Sampler
  ALWAYS_SAMPLE, NEVER_SAMPLE

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Sampler`	`create(float probability)`
`boolean`	`isSampled(long traceIdIgnored)`	loops over the pre-canned decisions, resetting to zero when it gets to the end.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - create
```
public static Sampler create(float probability)
```
    Parameters:
    
    probability - probability a request will result in a new trace. 0 means never sample, 1 means always sample. Minimum probability is 0.01, or 1% of traces
  - isSampled
```
public boolean isSampled(long traceIdIgnored)
```
    loops over the pre-canned decisions, resetting to zero when it gets to the end.
    
    Specified by:
    
    isSampled in class Sampler
    
    Parameters:
    
    traceIdIgnored - The trace ID to be decided on, can be ignored
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object