#react

Stop dumping server data in Zustand. The 4-quadrant model, TanStack Query for server state, Zustand for UI state, with Next.js 16 code.

Zustand vs Redux Toolkit in 2026: bundle size, boilerplate, DevTools, async, TS inference, server state, and a clear decision matrix.

Recoil is deprecated by Meta. Jotai is the active successor. API comparison, migration cheatsheet, RSC compatibility, and bundle numbers.