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28 lines
956 B
Plaintext
28 lines
956 B
Plaintext
---
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title: "InMemoryDocumentStore"
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id: inmemorydocumentstore
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slug: "/inmemorydocumentstore"
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---
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# InMemoryDocumentStore
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The `InMemoryDocumentStore` is a very simple document store with no extra services or dependencies.
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It is great for experimenting with Haystack, however we do not recommend using it for production.
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### Initialization
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`InMemoryDocumentStore` requires no external setup. Simply use this code:
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```python
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from haystack.document_stores.in_memory import InMemoryDocumentStore
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document_store = InMemoryDocumentStore()
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```
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### Supported Retrievers
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[`InMemoryBM25Retriever`](../pipeline-components/retrievers/inmemorybm25retriever.mdx): A keyword-based Retriever that fetches documents matching a query from a temporary in-memory database.
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[`InMemoryEmbeddingRetriever`](../pipeline-components/retrievers/inmemoryembeddingretriever.mdx): Compares the query and document embeddings and fetches the documents most relevant to the query.
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