| from langchain.memory import ConversationBufferWindowMemory | |
| from langchain_community.chat_message_histories import StreamlitChatMessageHistory | |
| memory_storage = StreamlitChatMessageHistory(key="chat_messages") | |
| memory = ConversationBufferWindowMemory(memory_key="chat_history", human_prefix="User", chat_memory=memory_storage, k=3) |