State Management
intermediateTopic 11 of 14 in Frontend Development
What it is
State management is how you organise and share data across different parts of your application. As apps grow, you need patterns and tools to keep your data predictable, consistent, and easy to debug.
Why frontend developers need it
Simple apps can get by with local component state. But once you have authentication, carts, filters, and real-time data, you need a strategy. Poor state management is one of the top sources of bugs in frontend apps.
What to learn
Local state vs. global state
React Context API for simple sharing
State management libraries: Zustand, Redux Toolkit
Server state with React Query / TanStack Query
Derived state and memoization
When to use which pattern
Practice project
E-Commerce Cart
Build a shopping cart feature with global state: add to cart, update quantities, remove items, and persist the cart across page navigations. Use Zustand or Redux Toolkit.