Expired50% confidenceFactExact time
MemorySaver (officially called Checkpoint) is responsible for state persistence, defaulting to in-memory storage, and can be replaced in production environments with backends such as PostgreSQL or Redis.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/12/2026
First Seen
Valid until: 10/10/2026(expired)
Sources
Getting Started with LangGraph: Building AI Agent Workflows with Graph Structures
bilibili吴恩达LLM7/10/2026
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UnverifiedLangGraph 的 Memory 体系分为短期记忆（In-Memory Store）和长期记忆（Persistent Store），长期记忆通过 Checkpointer 机制将 State 快照写入 Redis、SQLite 或 PostgreSQL 等外部存储77% similarUnverifiedThe Checkpoint mechanism can use Redis or a relational database to store serialized Agent state snapshots, which is consistent with the built-in persistence layer design of frameworks such as LangGraph72% similarUnverified会话持久化通常依赖Redis等内存数据库存储中间状态，配合PostgreSQL等数据库持久层保存完整历史，以实现断点续传71% similarUnverified状态持久化机制在数据库系统中表现为WAL（Write-Ahead Logging），在流处理系统如Apache Flink中表现为Checkpoint70% similarUnverified持久化记忆是多层机制的组合，从存储介质看横跨短期工作记忆（KV Cache）、中期会话记忆（Redis）到长期知识库（向量数据库如Pinecone、Weaviate、Chroma）70% similar
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