Back to Troubleshooting Hub
mediumperformance

LangChain: Memory Overflow in Long Conversations

Published 1/31/2024 • by OpenAgent.bot Team

Symptoms

Application slows down or crashes after extended conversations, high memory usage

Root Cause

Conversation history grows unbounded, exceeding available memory

Solution
  1. Implement conversation summarization:
from langchain.memory import ConversationSummaryMemory
memory = ConversationSummaryMemory(llm=llm)
  1. Or use a sliding window:
from langchain.memory import ConversationBufferWindowMemory
memory = ConversationBufferWindowMemory(k=5)
  1. Clear memory periodically for long-running sessions
Verification

Monitor memory usage during extended conversations. Memory should stabilize instead of growing linearly.

Tags

memoryperformancelangchain

Affected Components

memoryconversation