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LangGraph · Type Alias

Checkpoint

LangGraph checkpointers save graph state after each super-step. They use thread_id to organize checkpoints, enabling memory, human approval flows, replay, time travel, and recovery after failures.

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Syntax

graph = workflow.compile(checkpointer=checkpointer)
graph.invoke(input, {"configurable": {"thread_id": "1"}})

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  • StateSnapshot
  • get_state
  • get_state_history
  • update_state
  • InMemorySaver
  • PostgresSaver
  • SqliteSaver
  • checkpoint_id

Source: Checkpointers - Docs by LangChain Documentation. Checked 2026-11-03.