Conversational Memory Demonstration Chatbot for Learners

Added Jun 2025 3 design docs

The difference between a chatbot that feels intelligent and one that feels broken is usually memory: whether it recalls the name given two messages ago or the preference stated last session. Yet memory is invisible in most products, so developers learning conversational AI cannot see how it works or fails. A chatbot built specifically to expose its own memory, showing what it stores, when, and why, turns the most important concept in conversation design into something observable. The intern builds this teaching chatbot as a Streamlit application in Python using LangChain's memory components. The app offers a normal chat interface alongside a memory inspector panel: temporary conversation memory shows the rolling context maintained within a session, while permanent memory persists selected facts across sessions and displays what has been retained. The intern implements both memory types, controls that let a user switch memory modes mid-conversation to feel the difference, and a visible log of what enters the context window for each model call. The project gives the intern deep practical insight into conversation-state engineering: buffer versus persistent memory trade-offs, context assembly for each model call, and the cost and privacy considerations of remembering user data, all demonstrated in an application that doubles as a learning resource for other students.

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