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Async Logic

  • This lesson introduces async logic in React and explains how to handle API calls and side effects using Redux.

  • Async Logic


    Async Actions

    Async logic handles:

    • API calls

    • Delays

    • Background tasks

    Examples:

    • Fetching users

    • Submitting forms

    Redux Thunk Basics

    Redux Thunk allows async actions.

    Example:

const fetchUsers = () => async dispatch => {
  const data = await fetch("/api/users").then(res => res.json());
  dispatch(setUsers(data));
};

  • Enables async logic inside Redux.

    Comparison Summary

    Method

    Best Use Case

    Lifting State

    Small shared state

    Context API

    Global simple state

    Redux Toolkit

    Large complex apps

    Final Summary 

    • State controls app behavior

    • Lifting state enables sharing

    • Prop drilling causes complexity

    • Context simplifies global data

    • Redux manages complex global state

    • Redux Toolkit is modern Redux

    • Thunk handles async logic

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