Jotai State Management

Jotai is a primitive and flexible state management library for React that takes an atomic approach to global state, created by Daishi Kato in 2020. Instead of storing state in a single store object like Redux, Jotai models state as individual atoms that can be composed together, with React automatically optimizing re-renders based on atom dependencies. This design solves the extra re-render problem inherent in React Context, eliminates the need for manual memoization with useMemo and useCallback, and provides a developer experience similar to signals while maintaining React declarative programming model. Atoms can hold any JavaScript value type including primitives, objects, arrays, sets, and maps, and derived atoms compute their values from other atoms with automatic dependency tracking. Jotai v2 is fully compatible with React 18 and the upcoming use hook, and introduces a store interface that can be used outside of React components, enabling state management in server components, web workers, and non-React contexts. The library scales from a simple useState replacement to enterprise TypeScript applications, with utilities for async atoms, atom families for dynamic atom creation, persistence with storage adapters, and devtools integration. Jotai is trusted in production at companies including Meta, Adobe, TikTok, and Uniswap.