langgraph-architecture

SKILL.md

| Single LLM call | Direct API call | Overhead not justified | | Linear pipeline | LangChain LCEL | Simpler abstraction | | Stateless tool use | Function calling | No persistence needed | | Simple RAG | LangChain retrievers | Built-in patterns | | Batch processing | Async tasks | Different execution model |

| Lightweight, faster | Runtime validation | | Dict-like access | Attribute access | | No validation overhead | Type coercion | | Simpler serialization | Complex nested models |

Recommendation: Use TypedDict for most cases. Use Pydantic when you need validation or complex nested structures.

指导 LangGraph 应用程序的架构决策。在决定 LangGraph 与替代方案、选择状态管理策略、设计多代理系统或选择持久性和流处理方法时使用。 来源：existential-birds/beagle。

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