Redux has been the default state management library for React for a decade. Zustand has grown to be a genuine alternative. The question isn’t which is better — it’s which fits your situation.

What Redux gives you

Redux is an architecture as much as a library. State lives in a single store, changes go through dispatched actions, and reducers are pure functions that produce new state. Redux Toolkit (RTK) makes this practical:

import { createSlice, configureStore } from '@reduxjs/toolkit';

const cartSlice = createSlice({
  name: 'cart',
  initialState: { items: [], total: 0 },
  reducers: {
    addItem: (state, action) => {
      state.items.push(action.payload);
      state.total += action.payload.price;
    },
    removeItem: (state, action) => {
      state.items = state.items.filter(i => i.id !== action.payload);
      state.total = state.items.reduce((sum, i) => sum + i.price, 0);
    },
  },
});

const store = configureStore({ reducer: { cart: cartSlice.reducer } });

The benefits:

  • Predictability: every state change is an explicit action, traceable through the action log
  • DevTools: time-travel debugging, action replay, state inspection
  • Middleware: easy to add logging, analytics, or saga-based side effects
  • Team patterns: a large team has a consistent structure for state changes

What Zustand gives you

Zustand is a smaller, simpler API. A store is just a function that returns state and actions:

import { create } from 'zustand';

interface CartStore {
  items: Item[];
  total: number;
  addItem: (item: Item) => void;
  removeItem: (id: string) => void;
}

const useCart = create<CartStore>(set => ({
  items: [],
  total: 0,

  addItem: (item) => set(state => ({
    items: [...state.items, item],
    total: state.total + item.price,
  })),

  removeItem: (id) => set(state => {
    const items = state.items.filter(i => i.id !== id);
    return { items, total: items.reduce((sum, i) => sum + i.price, 0) };
  }),
}));

// Use it
function CartSummary() {
  const { items, total } = useCart();
  return <div>{items.length} items, ${total}</div>;
}

No Provider, no selectors, no dispatch. The store is used directly as a hook. Components subscribe to slices of state and only re-render when their slice changes.

What you give up with Zustand

DevTools are less powerful. Zustand has a DevTools middleware, but Redux DevTools’ time-travel debugging (jump to any previous state) and action log are more capable. When debugging complex state bugs, Redux’s action history is valuable.

No enforced structure. Redux’s reducer pattern enforces that state changes happen through named actions. Zustand lets you call set directly from anywhere. On a large team, this flexibility can lead to state updates scattered throughout the codebase in ways that are hard to follow.

Less ecosystem. Redux has years of middleware, patterns, and documentation. RTK Query is the best data-fetching story in the Redux ecosystem. Zustand is simpler but you’re making more decisions yourself.

What you give up with Redux

Boilerplate at small scale. RTK has reduced this significantly, but it’s still more setup than Zustand for simple state.

Bundle size. Redux + RTK is larger than Zustand (though for most apps this isn’t meaningful).

Learning curve. The Redux mental model (actions, reducers, selectors, dispatch) is a real concept to internalize.

The practical heuristic

Use Zustand when:

  • The app is small to medium, with a single team
  • You want minimal boilerplate
  • Global state is relatively simple (UI state, user preferences, non-async data)

Use Redux when:

  • The team is large and benefits from enforced patterns
  • You need RTK Query for server state management
  • You need robust DevTools for complex debugging
  • You’re already in a Redux codebase

Many applications don’t need either. React context + useReducer is sufficient for simple global state. RTK Query handles server state. Add a global state store only when you have state that genuinely needs to be shared across many unrelated components and updated from many places.