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JavaScript@langchain/langgraphwebBaseStore
Class●Since v0.3

BaseStore

Abstract base class for persistent key-value stores.

Stores enable persistence and memory that can be shared across threads, scoped to user IDs, assistant IDs, or other arbitrary namespaces.

Features:

  • Hierarchical namespaces for organization
  • Key-value storage with metadata
  • Vector similarity search (if configured)
  • Filtering and pagination
Copy
class BaseStore

Constructors

constructor
constructor

Methods

method
batch→ Promise<OperationResults<Op>>

Execute multiple operations in a single batch. This is more efficient than executing operations individually.

method
delete→ Promise<void>

Delete an item from the store.

method
get→ Value

Return the current value of the channel.

method
listNamespaces→ Promise<string[][]>

List and filter namespaces in the store. Used to explore data organization and navigate the namespace hierarchy.

method
put→ Promise<void>

Store or update an item.

method
search→ Promise<Item[]>

Search for items within a namespace prefix. Supports both metadata filtering and vector similarity search.

method
start

Start the store. Override if initialization is needed.

method
stop→ Promise<void>

Stop the store. Override if cleanup is needed.

View source on GitHub