langgraph-checkpoint-postgres==3.1.3
This release updates the checkpointing logic to treat empty checkpoint IDs as the latest version in delta history and optimizes delta walk performance by starting at the target. It also introduces mandatory namespace label validation before store dispatch and fixes the ordering of delta channel replays.
Verified State Diff
Impact & Verification Analysis
Developers using LangGraph with Postgres or SQLite backends for state persistence.
These changes reduce latency in state retrieval and improve the reliability of complex agentic workflows by ensuring consistent ordering and strict validation of state metadata.
Full Fact Overview
Version 3.1.3 of langgraph-checkpoint-postgres focuses on stabilizing state management and improving query efficiency for Postgres-backed checkpoints. Key technical changes include a performance optimization for delta walks, which now initiate from the target rather than scanning from the beginning, and a critical fix for delta channel replay ordering based on task paths. Additionally, the library now enforces validation of namespace labels prior to store dispatch, ensuring data integrity, and updates the urllib3 dependency to version 2.8.0.