LangGraph
A practical 5-module track to build production-ready agents: start from the graph runtime mental model, then layer state + persistence, branching + human-in-the-loop, multi-agent orchestration, and final interview prep.
Graph Mental Model
Why graphs over loops, nodes/edges/state, reducers, compile/invoke, and basic chat loop.
Open module → 02State & memoryPersistence That Survives Restarts
Threads, checkpointers, reducers, short/long-term memory, and state design that scales.
Open module → 03Control flowBranching + Human-in-the-Loop
Conditional routing, Send, Command, interrupts, approval gates, and safe resumes.
Open module → 04ProductionMulti-Agent + Observability
Supervisor patterns, orchestration trade-offs, tracing, reliability and deployment shape.
Open module → 05InterviewGauntlet + System Design
Rapid-fire questions, architecture drills, trap cards, and final confidence checks.
Open module →