Use combined memory

chatbot/memory.py

@@ -1,3 +1,8 @@
-from langchain.memory import ConversationBufferMemory
+from langchain.memory import CombinedMemory, ConversationBufferWindowMemory, ConversationSummaryMemory
+from chatbot.llm import gemini_llm  
+
+buffer_memory = ConversationBufferWindowMemory(k=5)
+summary_memory = ConversationSummaryMemory(llm=gemini_llm)
+
+combined_memory = CombinedMemory(memories=[buffer_memory, summary_memory])
 
-memory = ConversationBufferMemory(memory_key="chat_history", return_messages=True)