Why it matters

State machines shape long-running workflows. Understanding shapes design.

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The architecture

States + transitions + guards.

Persistent state.

Event-driven transitions.

State machine workflow structureStatesexplicit setTransitionsguards + actionsPersistent stateresume from crashSpring Statemachine + Squirrel + custom on Temporal / AWS Step Functions
State machine workflow.
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How it works end to end

Spring Statemachine + Squirrel.

Temporal / Step Functions for durability.

Explicit state model.