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We've all been there—passing props down multiple levels, struggling with inconsistent state updates, and managing complex data flows in large React applications. Without a proper state management solution, components become tightly coupled, leading to bugs, inefficiencies, and endless debugging sessions. Many developers are familiar with Redux as a solution, but understanding its implementation and workflow often feels overwhelming. In this blog, we’ll break it down step by step, providing a clear, structured approach to help you grasp Redux with ease.

Prerequisites

• Basic understanding of React (Components and Hooks)
• Familiarity with JavaScript arrays and the reduce() method

What is React-Redux?

Think of React-Redux as a central bank for your app's data. Instead of each component keeping track of its own data, React-Redux provides a central location (called a "store") where all your app's important data lives. Any component can access or update this data, no matter where it sits in your component tree.

Why Do We Need It?

Imagine you're passing notes in a classroom:

• Without Redux: To get a note from the front of the class to the back, it needs to pass through every student in between (this is called "prop drilling").
• With Redux: There's a bulletin board (the store) where anyone can post or read notes directly, no matter where they're sitting.

This becomes especially helpful when:

1. You need to share data between components that are far apart
2. Multiple components need to access and modify the same data
3. You want to keep track of all data changes in one place

Important components:

There are five core Redux components — store, actions, reducers, dispatch, and selectors.

• Store: The central place where your app’s state lives.
• Actions: Plain JavaScript objects that describe what happened (e.g., "increment counter").