Redux Store

Store Overview

Store is something you will reach for often in Redux. It keeps your workflow predictable and makes your intent obvious to reviewers and teammates.

When you learn store properly, you avoid the guesswork that leads to mistakes and rework. The example below shows the shape you will use in most real Redux projects.

import { configureStore } from '@reduxjs/toolkit';
import counterReducer from './features/counter/counterSlice';

export const store = configureStore({
  reducer: {
    counter: counterReducer,
  },
});

export type RootState = ReturnType<typeof store.getState>;
export type AppDispatch = typeof store.dispatch;

configureStore sets up the Redux store with good defaults, including Redux DevTools and thunk.

Store Example

const slice = createSlice({ name, initialState, reducers });
const store = configureStore({ reducer: { key: slice.reducer } });
// dispatch(slice.actions.something())

• Start from a minimal Store example and grow it only as needed.
• Keep things explicit so Store behaves the same for everyone on the team.
• Name things clearly so teammates understand your Store at a glance.
• Verify Store works as expected before relying on it in important work.

Redux Cheatsheet

Quick Redux Toolkit reference related to store.

How Store Works in Redux

Store follows Redux's predictable data flow: components dispatch actions, reducers compute the next state from the previous state and the action, and subscribed components re-render.

configureStore sets up the Redux store with good defaults, including Redux DevTools and thunk.

• State lives in a single, read-only store.
• Actions are the only way to describe a change.
• Reducers are pure functions that return the next state.
• Redux Toolkit removes most boilerplate with slices and thunks.

Practical Guidance for Store

In modern apps, store should use Redux Toolkit rather than hand-written Redux. Keep state minimal, colocate logic in slices, and use RTK Query for server data.

Common Mistakes

• Copying store commands or snippets without understanding what each part does.
• Skipping edge cases and error handling when using store.
• Not verifying the result of store before moving on.
• Over-complicating store before you actually need the extra flexibility.

Key Takeaways

• Store is a core part of working effectively with Redux.
• Start small and keep store focused on a single goal.
• Apply consistent patterns so store scales across your project.
• Practise and document store to keep your workflow maintainable.