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InMemoryByteStore

This guide will help you get started with in-memory key-value stores. For detailed documentation of all InMemoryByteStore features and configurations head to the API reference.

Overview

The InMemoryByteStore is a non-persistent implementation of a ByteStore that stores everything in a Python dictionary. It's intended for demos and cases where you don't need persistence past the lifetime of the Python process.

Integration details

ClassPackageLocalJS supportPackage downloadsPackage latest
InMemoryByteStorelangchain_corePyPI - DownloadsPyPI - Version

Installation

The LangChain InMemoryByteStore integration lives in the langchain_core package:

%pip install -qU langchain_core

Instantiation

Now you can instantiate your byte store:

from langchain_core.stores import InMemoryByteStore

kv_store = InMemoryByteStore()
API Reference:InMemoryByteStore

Usage

You can set data under keys like this using the mset method:

kv_store.mset(
[
["key1", b"value1"],
["key2", b"value2"],
]
)

kv_store.mget(
[
"key1",
"key2",
]
)
[b'value1', b'value2']

And you can delete data using the mdelete method:

kv_store.mdelete(
[
"key1",
"key2",
]
)

kv_store.mget(
[
"key1",
"key2",
]
)
[None, None]

API reference

For detailed documentation of all InMemoryByteStore features and configurations, head to the API reference: https://python.langchain.com/api_reference/core/stores/langchain_core.stores.InMemoryByteStore.html


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