# Peer

LLMS index: [llms.txt](/llms.txt)

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## Peer Attributes

These attribute may be used for any operation that accesses some remote service.

**Attributes:**

| Key | Stability | Value Type | Description | Example Values |
| --- | --- | --- | --- | --- |
| <a id="peer-service" href="#peer-service">`peer.service`</a> | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `service.peer.name`. | string | The [`service.name`](/docs/specs/semconv/resource/README.md#service) of the remote service. SHOULD be equal to the actual `service.name` resource attribute of the remote service if any. [1] | `AuthTokenCache` |

**[1] `peer.service`:** Examples of `peer.service` that users may specify:

- A Redis cache of auth tokens as `peer.service="AuthTokenCache"`.
- A gRPC service `rpc.service="io.opentelemetry.AuthService"` may be hosted in both a gateway, `peer.service="ExternalApiService"` and a backend, `peer.service="AuthService"`.