# Lettuce

<!-- llms-txt-link: /llms.txt -->

> OpenTelemetry Java agent instrumentation

This instrumentation enables database client spans and database client metrics for the Lettuce Redis client.

- **Name**: `lettuce-4.0`
- **Scope**: `io.opentelemetry.lettuce-4.0`
- **Target versions**: `biz.paluch.redis:lettuce:[4.0.Final,)`
- **Library**: https://github.com/redis/lettuce

## Telemetry

- **Metrics**: `db.client.operation.duration`
- **Span attributes**: `db.operation`, `db.system`, `server.address`, `server.port`, `peer.service`, `db.operation.batch.size`, `db.operation.name`, `db.system.name`, `error.type`, `service.peer.name`, `lettuce.command.cancelled`

## Configuration

| Option | Type | Default | Description |
| --- | --- | --- | --- |
| `otel.instrumentation.common.peer-service-mapping` | map |  | Used to specify a mapping from host names or IP addresses to peer services. |
| `otel.instrumentation.lettuce.connection-telemetry.enabled` | boolean | false | Enables connection telemetry spans for Redis connections. |
| `otel.instrumentation.lettuce.experimental-span-attributes` | boolean | false | Enables experimental span attribute `lettuce.command.cancelled`. |

## Data

- **JSON**: [/data/javaagent/instrumentations/lettuce-4.0/lettuce-4.0-9241d6d35ef5.json](/data/javaagent/instrumentations/lettuce-4.0/lettuce-4.0-9241d6d35ef5.json)
- **Explore**: [/java-agent/instrumentation/lettuce-4.0](/java-agent/instrumentation/lettuce-4.0)