A Roadmap to Mastering Redux in React Projects
A step-by-step roadmap to learn Redux in React, from the basics to async and RTK Query.
A Roadmap to Mastering Redux in React Projects
Redux is best learned in order, where each step builds on the last. Here is a roadmap to master Redux in React projects.
Step 1: Understand the Problem
Before Redux, understand why it exists: managing shared state across many components without prop drilling. Feel the pain Context cannot solve before learning Redux.
Step 2: Core Concepts
Learn the three core concepts: a single store, actions that describe what happened, and reducers that return new state. Understand the one-way data flow.
Step 3: Redux Toolkit Basics
Learn createSlice to define state and reducers, configureStore to set up the store, and Provider to make it available. Build a simple counter.
Step 4: Reading and Dispatching
Learn useSelector to read state and useDispatch to dispatch actions. Build a small app with a cart that adds and removes items.
Step 5: Async With createAsyncThunk
Learn createAsyncThunk to handle data fetching, and manage pending, fulfilled, and rejected in extraReducers. Build a feature that fetches data.
Step 6: Selectors and Performance
Learn to write specific selectors to avoid unnecessary re-renders. Use memoized selectors with reselect for derived state.
Step 7: RTK Query
Learn RTK Query for API data fetching, which handles caching, invalidation, and loading states for you. It removes most hand-written data-fetching code.
Step 8: Patterns at Scale
Learn slice organization by feature, normalized entity state with createEntityAdapter, and when to keep state local vs in Redux.
The Takeaway
Master Redux in order: understand the problem, core concepts, RTK basics, reading and dispatching, async with createAsyncThunk, selectors and performance, RTK Query, and patterns at scale. Each step assumes the last.
In order: understand the problem Redux solves, learn the core concepts of store, actions, and reducers, learn RTK basics with createSlice and configureStore, read and dispatch with useSelector and useDispatch, handle async with createAsyncThunk, then learn RTK Query and patterns at scale.
Why Redux exists: managing shared state across many components without prop drilling. Feel the pain that Context cannot solve before learning Redux, so you understand the problem it solves and when to use it.
After you can read and dispatch with useSelector and useDispatch. createAsyncThunk handles async like data fetching, and you manage its pending, fulfilled, and rejected cases in extraReducers. Build a feature that fetches data to practice.
After you understand createAsyncThunk and selectors. RTK Query handles API data fetching with caching, invalidation, and loading states for you, removing most hand-written data-fetching code. It is the modern way to fetch API data in a Redux app.
Write specific selectors. In useSelector, select only the data a component needs, not a whole slice. For derived state, use memoized selectors with reselect so the derived value is only recomputed when its inputs change.
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Master React
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