What is Redux?

 

React Without Redux vs With Redux

1. React Without Redux (Normal State Management)

In normal React, we use:

• useState
• useEffect
• props

Data Flow:

Parent → Child (via props)
Child → Parent (via callbacks)
  

Problem: Prop drilling becomes messy in large apps.

App
 └── Dashboard
      └── Section
           └── ProfileList
  

You must pass data through multiple levels unnecessarily.

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2. React WITH Redux

Redux introduces a global store for managing state.

Data Flow:

Component → Dispatch Action → Redux Store → UI Updates
  

Any component can access data directly from the store.

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3. Differences

State Location

• Without Redux: Inside components
• With Redux: Global store

Data Sharing

• Without Redux: Props drilling
• With Redux: Direct access via store

Complexity

• Without Redux: Simple apps
• With Redux: Large scalable apps

Performance

• Without Redux: Good for small apps
• With Redux: Better for complex apps

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4. Real Project Example

Without Redux

• ProfileList fetches data
• ProfileForm updates list manually
• Props passed between components

With Redux

• ProfileForm dispatches action
• ProfileList reads from store
• UI updates automatically

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5. When to Use Redux

• Large applications
• Shared state across many components
• Auth systems
• Search, filters, pagination

When NOT to use Redux

• Small apps
• Simple forms
• No shared state

React alone: Local state management

Redux: Global state manager for large applications

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