Duplicating history for PostgresSaver

[nirben82]

Hey, I am building an GenAI app using LangGraph. One of the features is the ability for the user to duplicate a conversation (unique by thread_id) to another user's history. I am managing the app history in a separate persistent layer so I can duplicate it there easily and create a new thread_id, but I'd also would the duplicated conversation can be continued using the PostgresSaver. Does it make to pull all the checkpoints of a specific thread_id using list, modify the thread_id all in the checkpoints and then store it back using put? Thanks

[hinthornw]

Seems like you're doing something similar to forking?

Since StateGraph is a state machine, you may be able to get away with just copying the last state over rather than copying the entire history of states

[nirben82]

Thanks for the info, very relevant 👍 I'll look into that and update back. Thanks!