# `Parapet.Metrics.ExemplarStore`
[🔗](https://github.com/szTheory/parapet/blob/v1.0.0/lib/parapet/metrics/exemplar_store.ex#L1)

An ETS-backed store for holding the latest trace ID associated with a metric and its tags.
This allows Prometheus formatters to quickly fetch the recent trace exemplar.

> #### Experimental {: .warning}
>
> This module is **experimental** in v1.x. Its API may change in a minor release with a
> single-version notice in CHANGELOG.md. See
> [Stability & Deprecation Policy](stability.html) for details.

# `child_spec`

Returns a specification to start this module under a supervisor.

See `Supervisor`.

# `get_trace`

# `record_trace`

# `start_link`

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*Consult [api-reference.md](api-reference.md) for complete listing*