How do Redux actions, reducers, and click-to-render data flow work?
Tests Redux unidirectional flow and immutability. Strong answer: actions are plain event objects, reducers are pure functions returning new state, and flow goes dispatch to store to UI. Red flag: actions mutating state or reducers with side effects.
This tests unidirectional data flow and immutability in Redux. A strong answer defines an action as a plain object describing an event, and a reducer as a pure function that returns the next state given previous state and an action. It then traces the cycle: event handler dispatches an action, the store runs the root reducer with current state, the reducer returns a new state object, the store notifies subscribers, and components re-render. Red flags: calling actions mutators, side effects in reducers, or omitting notifications.
Read the original → redux.js.org
- #redux
- #react
- #state-management
- #data-flow
- #frontend
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