# AsyncElasticsearchChatMessageHistory

> **Class** in `langchain_elasticsearch`

📖 [View in docs](https://reference.langchain.com/python/langchain-elasticsearch/chat_history/AsyncElasticsearchChatMessageHistory)

## Signature

```python
AsyncElasticsearchChatMessageHistory(
    self,
    index: str,
    session_id: str,
    *,
    ensure_ascii: Optional[bool] = True,
    client: Optional[AsyncElasticsearch] = None,
    es_url: Optional[str] = None,
    es_cloud_id: Optional[str] = None,
    es_user: Optional[str] = None,
    es_api_key: Optional[str] = None,
    es_password: Optional[str] = None,
)
```

## Extends

- `_AsyncElasticsearchChatMessageHistory`

## Methods

- [`clear()`](https://reference.langchain.com/python/langchain-elasticsearch/chat_history/AsyncElasticsearchChatMessageHistory/clear)

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[View source on GitHub](https://github.com/langchain-ai/langchain-elastic/blob/e78a327f38e09abd10128ed28c8774e9a8f9fec0/libs/elasticsearch/langchain_elasticsearch/chat_history.py#L22)