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feat: add dynamodb checkpoint saver #149

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adosaiguas
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Checkpoint saver that stores history in AWS DynamoDB

@hinthornw
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Thanks for the PR, @adosaiguas ! Excited for your involvement.

We plan to limit the scope of the langgraph package + repo to be core implementations + API's (similar to langchain-core).

What we could do is implement this in langchain-community at the path langchain_community.checkpoints (this is the code path)

Then we could include examples there and/or in here of how to use.

Does that make sense?

@adosaiguas
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@hinthornw thank you for your reply! sure, I'll move it there. I'll close this PR once I have the other PR link.

@hinthornw
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Thank you!

@adosaiguas
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@hinthornw I've created this PR: langchain-ai/langchain#18710 but I'm not sure if it will get approved having in mind the backward compatibility issue. Let's see what they say.

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