LangGraph: Graph‑Orchestrated Agents with Stateful, Testable Workflows

"LangGraph: Graph‑Orchestrated Agents with Stateful, Testable Workflows"

Built for experienced AI engineers, platform architects, and advanced Python developers, this book shows how to move beyond fragile prompt chains and opaque agent loops into explicit, durable orchestration. LangGraph is treated not as a convenience wrapper, but as a runtime for long-running, stateful systems that must survive failure, support human oversight, and remain understandable under real operational pressure.

Across the book, readers learn how to model state precisely, design graph control flow, implement replay-safe durable execution, and structure tool use with validation and bounded autonomy. It covers persistence, threads, interrupts, approval workflows, subgraphs, multi-actor topologies, streaming, tracing, and graph-level debugging. The final chapters turn these ideas into engineering discipline through rigorous testing, failure injection, checkpoint-based integration testing, and production hardening practices.

The emphasis throughout is on correctness, inspectability, and maintainability rather than toy demos or simplified abstractions. Readers should already be comfortable with modern LLM application development, APIs, and software architecture concepts. In return, they will gain a deep, practical framework for building agent systems that are not only capable, but also testable, auditable, and fit for production.

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E-raamat: 18. mai 2026