checkpoint==2.0.6

langgraph-checkpoint 2.0.6

Summary of Changes

• Added support for listing namespaces in AsyncBatchedBaseStore with a new method alist_namespaces #2534
• Improved performance of batch operations in AsyncBatchedBaseStore with operation deduplication #2534
• Fixed bug in InMemorySaver.put_writes() to handle missing checkpoint namespace gracefully #2404
• Added "fork" as a new source type in CheckpointMetadata for checkpoints created as copies of other checkpoints

Detailed Changes

langgraph.store.base.batch.AsyncBatchedBaseStore

• Added alist_namespaces method to query namespaces with filtering options for prefix, suffix, depth, and pagination #2534
• Implemented operation deduplication logic with new _dedupe_ops function that optimizes batch performance by:
  • Deduplicating identical get/search operations
  • Consolidating multiple put operations to the same key
  • Preserving operation order for consistent results #2534

langgraph.checkpoint.memory.InMemorySaver

• Updated put_writes method to gracefully handle cases where "checkpoint_ns" is not present in the configuration by using .get("checkpoint_ns", "") instead of direct access #2404

langgraph.checkpoint.base.CheckpointMetadata

• Extended the source field to include "fork" as a valid option
• Added documentation for "fork" value: "The checkpoint was created as a copy of another checkpoint"