checkpoint==1.0.13

langgraph-checkpoint 1.0.13

Summary of Changes

• Introduced new key-value store API for persistent data storage and retrieval with namespaced organization (#1834)
• Added support for hierarchical namespace organization with flexible search capabilities (#1834)
• Implemented in-memory store implementation for testing and lightweight applications (#1834)
• Enhanced serialization to support store items in checkpoint serialization (#1834)
• Improved documentation formatting for CheckpointMetadata (#1884)

Detailed Changes

langgraph.store.base.BaseStore

• Added abstract base class for key-value stores (#1834)
• Provides both synchronous and asynchronous operation interfaces
• Implements common operations:
  • get/aget: Retrieve items by namespace and key
  • put/aput: Store or update items
  • delete/adelete: Remove items
  • search/asearch: Find items with filtering capabilities
  • list_namespaces/alist_namespaces: Discover available namespaces
  • batch/abatch: Execute multiple operations together

langgraph.store.base.Item

• Introduced main storage unit representing stored data with metadata (#1834)
• Contains value data, key, namespace path, and timestamp information
• Supports equality comparison and dictionary conversion

langgraph.store.memory.InMemoryStore

• Implemented in-memory store implementation for development and testing (#1834)
• Provides fast, non-persistent storage using Python dictionaries
• Supports all BaseStore operations for easy prototyping

langgraph.store.batch.AsyncBatchedBaseStore

• Added efficient batching mechanism for async operations (#1834)
• Automatically combines operations into batches for better performance
• Uses a background task to process operations asynchronously

langgraph.checkpoint.serde.jsonplus.JsonPlusSerializer

• Enhanced to support serialization of Item objects from the store API (#1834)
• Enables Items to be included in checkpoints and persisted correctly

langgraph.checkpoint.base.CheckpointMetadata

• Improved docstring formatting for better readability (#1884)