langgraph-persistence

To persist LangGraph state across sessions, you use checkpointing mechanisms like InMemorySaver, SqliteSaver, or PostgresSaver to save and load graph state at every super-step.

Thread ID management differentiates between conversations by managing unique checkpoint sequences, ensuring each thread maintains its own isolated state and conversation history.

Yes, subgraph checkpointer scoping configures how subgraphs should persist state, enabling both parallel processing and stateful conversations within LangGraph architectures.

The best way to maintain long-term memory across LangGraph threads is using a Store component to preserve cross-thread user preferences and facts independently of individual conversation checkpoints.

LangGraph persistence enables time travel across states by checkpointing the durable execution of graph state, allowing you to revert or inspect previous super-steps.

You need a checkpointer for stateful LangGraph conversations to prevent data loss, ensuring the graph state is durably saved and can be reloaded across different execution instances.