How is a slice different from a traditional Redux reducer?
A slice in Redux Toolkit is a modern abstraction over traditional reducers that combines state logic, actions, and action creators in one place. Traditional Redux requires manual setup for each of these parts, leading to more boilerplate code.
Key Differences
In traditional Redux, you manually define action types, action creators, and reducers separately. In RTK,
createSliceauto-generates them for you.Slices allow direct state mutations using Immer, while traditional reducers must return new state objects explicitly.
A slice keeps related logic (state, actions, and reducers) together in one file, while traditional Redux often spreads them across multiple files.
Slices simplify setup with
configureStore, reducing boilerplate and improving readability.
Example Comparison