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Is it possible to maintain state of the graph in an external store? |
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Replies: 2 comments 5 replies
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Sharing the response I got from LangServe support: yes we have full support to back persistence with a database. we have written adapters for redis, postgres and sqlite (others are supported we can guide you on it if needed) we have some reference docs for checkpoint format here https://langchain-ai.github.io/langgraph/reference/checkpoints/?h=check and a guide for sqlite adapter here https://langchain-ai.github.io/langgraph/tutorials/introduction/#part-3-adding-memory-to-the-chatbot redis/postgres would be exactly same just using a different adapter class |
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Hello, sorry I could not find any adapter for redis... |
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Same here, there are no adapters for langgraph. I do want to try it but with limited support on adapters, it is quite difficult |
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Documentation says it has postgres but can even find that either |
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I believe they removed the postgres checkpointer due to problems. You can see their commit here. I have switched my chat history to sqllite, and it work seamless with langgraph.checkpoint.sqlite |
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It would be great to know when the support for redis and postgres is coming back. |
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@erksubasi @cgoncalves94 @kmillanrfractal @DhavalThkkar @hodgesz Hi, guys. I hope you all are doing well. Check these langgraph examples with implementation for checkpointer using redis, mongodb, postgress. https://github.com/langchain-ai/langgraph/blob/main/examples/persistence_postgres.ipynb |
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Sharing the response I got from LangServe support:
yes we have full support to back persistence with a database. we have written adapters for redis, postgres and sqlite (others are supported we can guide you on it if needed)
we have some reference docs for checkpoint format here https://langchain-ai.github.io/langgraph/reference/checkpoints/?h=check
and a guide for sqlite adapter here https://langchain-ai.github.io/langgraph/tutorials/introduction/#part-3-adding-memory-to-the-chatbot
redis/postgres would be exactly same just using a different adapter class