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LangGraph SummarizationMiddleware wiped my chat history: keeping the full transcript with PostgresSaver

Disclosure: I work on MemorySync (I'm Mohammed, the founder). I drafted this page with AI assistance and checked it against the source thread and the official docs listed under Sources on Oct 28, 2026. I read the thread and the LangChain docs; I didn't run this agent for this page. The question In…

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  1. 2026-10-31 16:20 · DEV Community — AI
    LangGraph SummarizationMiddleware wiped my chat history: keeping the full transcript with PostgresSaver

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