Redux & Redux Toolkit Course
Redux & Redux Toolkit
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Intermediate

State Splitting

Definition

The architectural practice of breaking a monolithic global state object down into smaller, highly focused slices to improve performance and code organization.

Explain Like I'm New

Don't put `ui` state (like is the modal open) in the same slice as `data` state (like the list of users). If they are in the same slice, updating the modal might accidentally trigger components that are watching the user data.

Real World Example

Creating separate files for `authSlice`, `cartSlice`, `productSlice`, and `themeSlice`.

Common Use Cases

  • •Redux architecture
  • •Preventing UI stuttering

Interactive Example

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Interview Questions

basic

  • What RTK function makes State Splitting incredibly easy?

intermediate

  • Why does splitting state improve performance?

Flash Cards

Question

Which function?

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Answer

`createSlice()`

Question

Why improve performance?

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Answer

Because components selecting from `state.auth` completely ignore any actions that modify `state.cart`. It naturally isolates re-rendering zones.