mirror of
https://github.com/langchain-ai/langgraphjs.git
synced 2026-07-22 17:15:25 -04:00
github-actions[bot]
0120a78d58
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @langchain/langgraph-checkpoint-mongodb@1.3.0 ### Minor Changes - [#2326](https://github.com/langchain-ai/langgraphjs/pull/2326) [`36916ed`](https://github.com/langchain-ai/langgraphjs/commit/36916ed86e63eb07249a68ecf0508e3b986ba587) Thanks [@tadjik1](https://github.com/tadjik1)! - feat: add MongoDBStore for long-term memory New `MongoDBStore` class for persisting data across threads and sessions — user preferences, learned facts, agent memory, and more. - Store and retrieve JSON documents organized by hierarchical namespaces - Search with field-based filtering and comparison operators - Vector similarity search with manual embedding (bring your own embedding model) or auto embedding (MongoDB generates embeddings via Voyage AI) - Automatic document expiration via configurable TTL --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Hunter Lovell <hunter@hntrl.io>
@langchain/langgraph-checkpoint-mongodb
Implementation of a LangGraph.js CheckpointSaver that uses a MongoDB instance.
Usage
import { MongoClient } from "mongodb";
import { MongoDBSaver } from "@langchain/langgraph-checkpoint-mongodb";
const writeConfig = {
configurable: {
thread_id: "1",
checkpoint_ns: ""
}
};
const readConfig = {
configurable: {
thread_id: "1"
}
};
const client = new MongoClient(process.env.MONGODB_URL);
const checkpointer = new MongoDBSaver({ client });
const checkpoint = {
v: 1,
ts: "2024-07-31T20:14:19.804150+00:00",
id: "1ef4f797-8335-6428-8001-8a1503f9b875",
channel_values: {
my_key: "meow",
node: "node"
},
channel_versions: {
__start__: 2,
my_key: 3,
"start:node": 3,
node: 3
},
versions_seen: {
__input__: {},
__start__: {
__start__: 1
},
node: {
"start:node": 2
}
},
pending_sends: [],
}
// store checkpoint
await checkpointer.put(writeConfig, checkpoint, {}, {});
// load checkpoint
await checkpointer.get(readConfig);
// list checkpoints
for await (const checkpoint of checkpointer.list(readConfig)) {
console.log(checkpoint);
}
await client.close();