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TLDR:

React hooks are powerful, but without clear boundaries they can turn components into tightly coupled “logic blobs.” This architectural guide explains the core hooks, the Rules of Hooks, and the most common useEffect pitfalls—then shows how Feature-Sliced Design (FSD) helps you structure custom hooks, public APIs, and feature logic for large-scale React applications.

TLDR:

React state scales when you treat it as an architectural concern, not a hook choice. This guide shows how to classify state (local, shared, entity, server), apply useState and useReducer for predictable UI flows, use Context without triggering re-render cascades, and decide when Redux or Zustand is worth the trade-off—then place it all cleanly with Feature-Sliced Design.