> ## Documentation Index
> Fetch the complete documentation index at: https://cndoc-langchain.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 检查点器集成

> 与 LangGraph 持久化集成的检查点器后端。

检查点器使 LangGraph 能够实现[持久化](/oss/python/langgraph/persistence)，允许代理在交互过程中保存和恢复状态。

| 后端                                                                                               | 包                                                                                            | 源代码                                                                                                                             |
| ------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| [内存中](https://reference.langchain.com/python/langgraph.checkpoint/memory/InMemorySaver)          | [`langgraph-checkpoint`](https://pypi.org/project/langgraph-checkpoint/)                     | [langchain-ai/langgraph](https://github.com/langchain-ai/langgraph/tree/main/libs/checkpoint)                                   |
| [SQLite](https://reference.langchain.com/python/langgraph.checkpoint.sqlite/SqliteSaver)         | [`langgraph-checkpoint-sqlite`](https://pypi.org/project/langgraph-checkpoint-sqlite/)       | [langchain-ai/langgraph](https://github.com/langchain-ai/langgraph/tree/main/libs/checkpoint-sqlite)                            |
| [PostgreSQL](https://reference.langchain.com/python/langgraph.checkpoint.postgres/PostgresSaver) | [`langgraph-checkpoint-postgres`](https://pypi.org/project/langgraph-checkpoint-postgres/)   | [langchain-ai/langgraph](https://github.com/langchain-ai/langgraph/tree/main/libs/checkpoint-postgres)                          |
| AWS (DynamoDB, Bedrock, Valkey)                                                                  | [`langgraph-checkpoint-aws`](https://pypi.org/project/langgraph-checkpoint-aws/)             | [langchain-ai/langchain-aws](https://github.com/langchain-ai/langchain-aws/tree/main/libs/langgraph-checkpoint-aws)             |
| MongoDB                                                                                          | [`langgraph-checkpoint-mongodb`](https://pypi.org/project/langgraph-checkpoint-mongodb/)     | [langchain-ai/langchain-mongodb](https://github.com/langchain-ai/langchain-mongodb/tree/main/libs/langgraph-checkpoint-mongodb) |
| Azure Cosmos DB NoSQL                                                                            | [`langchain-azure-cosmosdb`](https://pypi.org/project/langchain-azure-cosmosdb/)             | [langchain-ai/langchain-azure](https://github.com/langchain-ai/langchain-azure/tree/main/libs/azure-cosmosdb)                   |
| Redis                                                                                            | [`langgraph-checkpoint-redis`](https://pypi.org/project/langgraph-checkpoint-redis/)         | [redis-developer/langgraph-redis](https://github.com/redis-developer/langgraph-redis)                                           |
| [Cockroach DB](/oss/python/integrations/providers/cockroachdb#langgraph-checkpointer)            | [`langchain-cockroachdb`](https://pypi.org/project/langchain-cockroachdb/)                   | [cockroachdb/langchain-cockroachdb](https://github.com/cockroachdb/langchain-cockroachdb)                                       |
| [Aerospike](/oss/python/integrations/providers/aerospike#langgraph-checkpointer)                 | [`langgraph-checkpoint-aerospike`](https://pypi.org/project/langgraph-checkpoint-aerospike/) | [aerospike-community/aerospike-langgraph](https://github.com/aerospike-community/aerospike-langgraph)                           |

***

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