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fix(checkpoint): update checkpoint interface specification in README (#6386)

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This syncs the checkpoint interface specification with the base class
(`BaseCheckpointSaver`) in
`langgraph/libs/checkpoint/langgraph/checkpoint/base /__init__.py`.
This commit is contained in:
Parker J. Rule
2025-11-03 21:44:41 +00:00
committed by GitHub
parent 1157ec77b4
commit 8b080a091e
1 changed files with 3 additions and 1 deletions
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libs/checkpoint/README.md
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@@ -38,8 +38,10 @@ Each checkpointer should conform to `langgraph.checkpoint.base.BaseCheckpointSav
- `.put_writes` - Store intermediate writes linked to a checkpoint (i.e. pending writes).
- `.get_tuple` - Fetch a checkpoint tuple using for a given configuration (`thread_id` and `checkpoint_id`).
- `.list` - List checkpoints that match a given configuration and filter criteria.
- `.delete_thread()` - Delete all checkpoints and writes associated with a thread.
- `.get_next_version()` - Generate the next version ID for a channel.
If the checkpointer will be used with asynchronous graph execution (i.e. executing the graph via `.ainvoke`, `.astream`, `.abatch`), checkpointer must implement asynchronous versions of the above methods (`.aput`, `.aput_writes`, `.aget_tuple`, `.alist`).
If the checkpointer will be used with asynchronous graph execution (i.e. executing the graph via `.ainvoke`, `.astream`, `.abatch`), checkpointer must implement asynchronous versions of the above methods (`.aput`, `.aput_writes`, `.aget_tuple`, `.alist`). Similarly, the checkpointer must implement `.adelete_thread()` if asynchronous thread cleanup is desired. The base class provides a default implementation of `.get_next_version()` that generates an integer sequence starting from 1, but this method should be overridden for custom versioning schemes.
## Usage