Blog

Global State in React: The Limits of Context, Zustand and When to Use Redux Toolkit

Most "global state" is really server, URL or form state; for the small client state that is truly global, Zustand's store with selectors fixes Context's render-every-reader problem, while Redux Toolkit comes in when you need an action log and rules for a large team. In Bookstore we move the recently viewed books and the cart id into a persisted store, and show reading without selectors causing 13 renders instead of 1 and a selector returning a new object looping forever in Zustand 5.