What does a checkpointer do?
Practice this question- It saves execution progress for later continuation or recovery.
- It is not automatically long-term user memory or a transaction coordinating all external effects.
- Production needs durable storage and authorized thread ownership.
Adapted from 13_AI.MD · “29.7 LangGraph”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.