Restaurant POS vs Retail POS: Why I Kept the Domain Models Separate

Описание и применение

Разделение моделей POS для ресторанов и розничных магазинов упрощает каждую систему, сохраняя ясные инварианты и позволяя независимое развитие.

Задача

A single universal POS schema can become bloated and obscure domain‑specific workflows when applied to both restaurants and retail shops.

Результат

Separating domain models simplifies each POS system, keeps invariants readable, and allows independent evolution of restaurant and retail workflows.

Рабочий процесс

• Identify domain‑specific entities (tables, guests, kitchen tickets for restaurants; stock, product identifiers for retail).
• Define separate domain models that capture each workflow without extraneous fields.
• Reuse common patterns (auth, receipt, printing, rounding) across both codebases.
• Document modules and scope in public repositories.
• Test boundaries to ensure each product can express its workflow independently.
• Maintain separate repositories to avoid cross‑domain breaking changes.

Доказательства

A restaurant order may be attached to a table, have guests and modifiers, produce kitchen tickets, move through preparation states, and depend on reservations or a waitlist.

Источник

A retail sale typically has a different relationship to stock, product identifiers, and checkout.

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If one model has to represent both, it often grows a forest of nullable fields and conditional rules.

Источник

We still reuse patterns that genuinely travel well: authentication/session design, receipt rendering, ESC/POS printing, and careful currency rounding.

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