feat(langgraph-checkpoint-aws): Add DynamoDBSaver as LangGraph Checkpointer #662
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ysunio
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michaelnchin
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LGTM - thanks for your work on this @ysunio !
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This PR adds Implementation DynamoDBSaver for LangGraph BaseCheckpointSaver checkpoint persistence with automatic S3 offloading (>350KB), intelligent compression, TTL support. Includes comprehensive tests, documentation, and CloudFormation template to provision required resources as perquisite for library
Key Features: Unified Checkpoint Storage, S3 offloading, gzip compression, TTL with s3 lifecycle management.
Note: Before reviewing, I highly recommend reading over the LangGraph Checkpointer documentation here for persistence: https://langchain-ai.github.io/langgraph/concepts/persistence/#checkpoints.