<overview LangGraph's persistence layer enables durable execution by checkpointing graph state: - Checkpointer : Saves/loads graph state at every super-step - Thread ID : Identifies separate checkpoint sequences (conversations) - Store : Cross-thread memory for user preferences, facts Two memory types: - Short-term (checkpointer): Thread-scoped conversation history - Long-term (store): Cross-thread user preferences, facts </overview <checkpointer-selection | Checkpointer | Use Case | Production Ready | |--------------|----------|------------------| | | Testing, development | No | | | Local de…