Motörhead is a memory server implemented in Rust. It automatically handles incremental summarization in the background and allows for stateless applications.

​
Setup

See instructions at Motörhead for running the server locally. 
from langchain_community.memory.motorhead_memory import MotorheadMemory

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Example

from langchain.chains import LLMChain
from langchain_core.prompts import PromptTemplate
from langchain_openai import OpenAI

template = """You are a chatbot having a conversation with a human.

{chat_history}
Human: {human_input}
AI:"""

prompt = PromptTemplate(
    input_variables=["chat_history", "human_input"], template=template
)
memory = MotorheadMemory(
    session_id="testing-1", url="http://localhost:8080", memory_key="chat_history"
)

await memory.init()
# loads previous state from Motörhead 🤘

llm_chain = LLMChain(
    llm=OpenAI(),
    prompt=prompt,
    verbose=True,
    memory=memory,
)

llm_chain.run("hi im bob")

> Entering new LLMChain chain...
Prompt after formatting:
You are a chatbot having a conversation with a human.


Human: hi im bob
AI:

> Finished chain.

' Hi Bob, nice to meet you! How are you doing today?'

llm_chain.run("whats my name?")

> Entering new LLMChain chain...
Prompt after formatting:
You are a chatbot having a conversation with a human.

Human: hi im bob
AI:  Hi Bob, nice to meet you! How are you doing today?
Human: whats my name?
AI:

> Finished chain.

' You said your name is Bob. Is that correct?'

llm_chain.run("whats for dinner?")

> Entering new LLMChain chain...
Prompt after formatting:
You are a chatbot having a conversation with a human.

Human: hi im bob
AI:  Hi Bob, nice to meet you! How are you doing today?
Human: whats my name?
AI:  You said your name is Bob. Is that correct?
Human: whats for dinner?
AI:

> Finished chain.

"  I'm sorry, I'm not sure what you're asking. Could you please rephrase your question?"