# InMemoryVectorStoreRetriever

> **Class** in `langchain_aws`

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

Retriever for InMemoryVectorStore.

## Signature

```python
InMemoryVectorStoreRetriever()
```

## Extends

- `VectorStoreRetriever`

## Properties

- `vectorstore`
- `search_type`
- `search_kwargs`
- `allowed_search_types`
- `model_config`

## Methods

- [`add_documents()`](https://reference.langchain.com/python/langchain-aws/vectorstores/inmemorydb/base/InMemoryVectorStoreRetriever/add_documents)
- [`aadd_documents()`](https://reference.langchain.com/python/langchain-aws/vectorstores/inmemorydb/base/InMemoryVectorStoreRetriever/aadd_documents)

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[View source on GitHub](https://github.com/langchain-ai/langchain-aws/blob/ea22fe3d744a3248b0b74ed555e9c34844b35a54/libs/aws/langchain_aws/vectorstores/inmemorydb/base.py#L1355)