# InMemoryDBDistanceMetric

> **Class** in `langchain_aws`

📖 [View in docs](https://reference.langchain.com/python/langchain-aws/vectorstores/inmemorydb/schema/InMemoryDBDistanceMetric)

Distance metrics for Redis vector fields.

## Signature

```python
InMemoryDBDistanceMetric()
```

## Extends

- `str`
- `Enum`

## Properties

- `l2`
- `cosine`
- `ip`

---

[View source on GitHub](https://github.com/langchain-ai/langchain-aws/blob/10d18256d46953e5fc8dca313a2c41eee29c2a80/libs/aws/langchain_aws/vectorstores/inmemorydb/schema.py#L24)