createApi

createApi Overview

createApi 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 createapi 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 { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query/react';

export const api = createApi({
  reducerPath: 'api',
  baseQuery: fetchBaseQuery({ baseUrl: '/api' }),
  endpoints: (builder) => ({
    getUsers: builder.query({ query: () => 'users' }),
    addUser: builder.mutation({
      query: (body) => ({ url: 'users', method: 'POST', body }),
    }),
  }),
});

export const { useGetUsersQuery, useAddUserMutation } = api;

RTK Query handles data fetching, caching, and auto-generated React hooks for you.

createApi Example

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

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

Redux Cheatsheet

Quick Redux Toolkit reference related to createapi.

How createApi Works in Redux

createApi 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.

RTK Query handles data fetching, caching, and auto-generated React hooks for you.

• 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 createApi

In modern apps, createapi 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

• Skipping edge cases and error handling when using createapi.
• Not verifying the result of createapi before moving on.
• Over-complicating createapi before you actually need the extra flexibility.
• Ignoring documentation, which makes createapi hard for the next person to follow.

Key Takeaways

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