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Understanding State management (Frontend)…


Whats state management?
When someone says “state management” in a JavaScript context they’re usually talking about global state management libraries like Redux, Vuex, Zustand, etc.


Whats a state management library ?
A state management library is a library which is used to manage and share the common data (state) of an application across its components in an organized way.
Examples of State:
The list of items in a shopping cart.
Info related to the current user logged into an app.

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Why Do We Need a State Management Library?

In modern applications, a lot of common data often needs to:
Be Shared Across Components: Components in different parts of the app may need access to the same data (e.g., user authentication status or theme preference).
Stay Consistent: Ensuring all parts of the app reflect the latest state to avoid bugs and unpredictable behavior.

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Why not use API calls or Backend store for frontend state management ?

Using API calls for managing frontend state isn’t inherently bad, but it might not always be the most efficient . Here’s why:
1. Slower Performance : Frequent API calls can increase latency, especially for minor state changes
2. Network Dependency : Frontend state that relies on backend APIs makes your app dependent on network availability. Offline capabilities can suffer as a result.
3. Cost and Server Load : Frequent API calls can increase server load and operational costs



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How a state management tool helps ?

This sharing becomes challenging as applications grow larger. Without a library, managing data manually often leads to:
Prop Drilling: Passing state through many levels of components unnecessarily.
Complexity: Tracking same data across multiple places in your app.
Inconsistency: Different parts of the app having outdated or incorrect state.


A state management library simplifies this by:
Centralizing State:
Simplifying Updates:
Reducing Prop Drilling:
Improving Performance:

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Detailed blog link in comments

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#redux #frontend #webdevelopment #javascript #statemanagement