Stateful vs. Stateless Frontend Design Explained Through a Food Delivery App

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A technical explainer on DEV Community uses a Snappfood-like food delivery app as a model to illustrate the difference between stateful and stateless frontend architecture. Stateless systems process each input independently without retaining memory of prior interactions, while stateful systems depend on accumulated history to determine current behavior. The article clarifies that a stateless API does not imply a stateless business domain, since data like baskets and orders is stored durably in databases rather than in server memory. As frontend applications grow beyond a few pages, decisions about who owns each piece of state, how long it persists, and what serves as the source of truth become critical architectural choices. The piece is intended as an educational model and does not reflect Snappfood's actual internal implementation.

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