Namaste Frontend System Design ◉ <FULL>

In the world of software development, "System Design" has long been the domain of backend engineers. We are accustomed to diagrams filled with databases, load balancers, microservices, and caching layers. However, as web applications have evolved into complex, feature-rich platforms, the frontend has outgrown the label of mere "UI implementation."

Today’s frontend engineers manage state that rivals backend complexity, handle real-time data streams, and optimize for performance on thousands of device types. It is time to approach frontend architecture with the same rigor and depth as backend systems.

Welcome to Namaste Frontend System Design—a philosophy that combines technical precision with a respectful, structured approach to building user interfaces. Namaste Frontend System Design

Assume the network will fail. Assume the user will switch from WiFi to 5G to no signal while on a train.

Request Deduping: If 3 components call useProduct(id) simultaneously, make one network request and share the promise.

The complexity of state is the primary reason frontend projects fail. A good system design categorizes state clearly: In the world of software development, "System Design"

The Namaste Principle: Keep state as close to where it is needed as possible. Avoid a monolithic global store if the data is local to a single component.

Stop putting everything in Redux/Zustand. Divide your state into three layers: Assume the network will fail

Client State (Transient): UI state (modal open/closed, form inputs).

URL State (The Source of Truth): Filters, pagination, selected variants.

A critical section focused on the "Vitals" of the application.

Bundle Analysis: Understanding the "cost" of dependencies and reducing JavaScript bundle sizes.

| Type | Solution | When | |------|----------|------| | Local UI | useState/useReducer | Toggles, form input | | Shared client | Zustand / Jotai | Theme, auth, multi-step wizards | | Server cache | TanStack Query | API data + mutations | | URL | React Router | Filters, pagination, modals |

Golden rule: Derive, don’t duplicate. If state can be computed from URL or cache, compute it.