mirror of
https://github.com/hwchase17/langchain
synced 2024-11-08 07:10:35 +00:00
7047a2c1af
# Add Momento as a standard cache and chat message history provider This PR adds Momento as a standard caching provider. Implements the interface, adds integration tests, and documentation. We also add Momento as a chat history message provider along with integration tests, and documentation. [Momento](https://www.gomomento.com/) is a fully serverless cache. Similar to S3 or DynamoDB, it requires zero configuration, infrastructure management, and is instantly available. Users sign up for free and get 50GB of data in/out for free every month. ## Before submitting ✅ We have added documentation, notebooks, and integration tests demonstrating usage. Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>
54 lines
1.5 KiB
Markdown
54 lines
1.5 KiB
Markdown
# Momento
|
|
|
|
This page covers how to use the [Momento](https://gomomento.com) ecosystem within LangChain.
|
|
It is broken into two parts: installation and setup, and then references to specific Momento wrappers.
|
|
|
|
## Installation and Setup
|
|
|
|
- Sign up for a free account [here](https://docs.momentohq.com/getting-started) and get an auth token
|
|
- Install the Momento Python SDK with `pip install momento`
|
|
|
|
## Wrappers
|
|
|
|
### Cache
|
|
|
|
The Cache wrapper allows for [Momento](https://gomomento.com) to be used as a serverless, distributed, low-latency cache for LLM prompts and responses.
|
|
|
|
#### Standard Cache
|
|
|
|
The standard cache is the go-to use case for [Momento](https://gomomento.com) users in any environment.
|
|
|
|
Import the cache as follows:
|
|
|
|
```python
|
|
from langchain.cache import MomentoCache
|
|
```
|
|
|
|
And set up like so:
|
|
|
|
```python
|
|
from datetime import timedelta
|
|
from momento import CacheClient, Configurations, CredentialProvider
|
|
import langchain
|
|
|
|
# Instantiate the Momento client
|
|
cache_client = CacheClient(
|
|
Configurations.Laptop.v1(),
|
|
CredentialProvider.from_environment_variable("MOMENTO_AUTH_TOKEN"),
|
|
default_ttl=timedelta(days=1))
|
|
|
|
# Choose a Momento cache name of your choice
|
|
cache_name = "langchain"
|
|
|
|
# Instantiate the LLM cache
|
|
langchain.llm_cache = MomentoCache(cache_client, cache_name)
|
|
```
|
|
|
|
### Memory
|
|
|
|
Momento can be used as a distributed memory store for LLMs.
|
|
|
|
#### Chat Message History Memory
|
|
|
|
See [this notebook](../modules/memory/examples/momento_chat_message_history.ipynb) for a walkthrough of how to use Momento as a memory store for chat message history.
|