Grocery Order Event Storming

This event storming diagram maps a grocery delivery order from checkout to delivery. Blue nodes are commands that request work, orange nodes are facts that happened, and the green node is a policy that reacts to the order being placed. The simple chain is a useful opening model because the group can ask where exceptions, ownership, and external systems belong. In a workshop, add cancellation, substitutions, out-of-stock handling, and refund events only after the happy path is agreed. Keep the event names concrete and in the past tense so participants can distinguish a recorded business fact from an instruction. Review the underlying definitions and totals before using this view to make an operational decision.

種類 フローチャート規格 Sugiyama layered DAG + orthogonal routingエンジン schematex-flowchart更新日 2026/9/24

依頼内容

“Create an event storming diagram for an online grocery order: Place order causes Order placed; authorize payment causes Payment authorized; reserve items causes Items reserved; pick order causes Order picked; dispatch delivery causes Order delivered. Color commands blue, events orange, and the payment policy green.”

次はこちらAdd a Payment declined event and an order cancellation command.Add an Order aggregate beside the first event.

この図に含まれるもの

図の背後にある意思決定を読み解く。

01Name facts

Keep events in past tense.

02Separate triggers

Show commands separately from events.

03Expose policy

Make payment authorization explicit.

Use for a chronological workshop map of a bounded business process.

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よくある質問

Why are events orange?

Orange is a common event-storming convention for facts that occurred.

What is the payment policy?

It reacts to Order placed by initiating payment authorization.

Where do exceptions go?

Add them as separate commands and past-tense events branching from the relevant point.