Class InMemoryStore

libs/core/langchain_core/stores.py:290–312

In-memory store for any type of data. Attributes: store (Dict[str, Any]): The underlying dictionary that stores the key-value pairs. Examples: .. code-block:: python from langchain.storage import InMemoryStore store = InMemoryStore()

class InMemoryStore(InMemoryBaseStore[Any]):
    """In-memory store for any type of data.

    Attributes:
        store (Dict[str, Any]): The underlying dictionary that stores
            the key-value pairs.

    Examples:

        .. code-block:: python

            from langchain.storage import InMemoryStore

            store = InMemoryStore()
            store.mset([('key1', 'value1'), ('key2', 'value2')])
            store.mget(['key1', 'key2'])
            # ['value1', 'value2']
            store.mdelete(['key1'])
            list(store.yield_keys())
            # ['key2']
            list(store.yield_keys(prefix='k'))
            # ['key2']
    """


class InMemoryByteStore(InMemoryBaseStore[bytes]):