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.

類型 流程圖標準 Sugiyama layered DAG + orthogonal routing引擎 schematex-flowchart更新時間 2026/9/24

需求

“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.”

接著試試Add a Payment declined event and an order cancellation command.Add an Order aggregate beside the first event.

這張圖裡有什麼

看懂背後的決策。

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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常見問題

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.