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Flux

• Store contains state and change logic
• Multiple stores
• Flat disconnected stores
• Singleton dispatcher
• React components subscribe to the store
• State is mutable

Redux

• Store and change logic are separate
• Single Store
• Single store with hierarchical reducers
• No dispatcher
• Container components utilize connect
• State is immutable

• A store is a JavaScript object which can hold the application’s state.
• And it provides a few helper methods to access the state, dispatch actions and register listeners.
• With Store the data state can be synchronized from the server level to the client layer without much hassle.
• This makes the development of large applications easier and faster.

• Reducers are pure functions which specify how the applications state changes in response to an ACTION.
• Takes in the previous state and an action and returns the new state type of the action, and returns new values.
• Determines what sort of update needs to be done based on the type of the action, and returns new values.
• It returns the previous state if no work needs to be done.

• Must have type property that indicates the type of ACTION Being performed.
• They must be defined as String constant.
• You can add more properties to it.
• Actions are created using functions called Action Creators.

1. Action – It’s an object that describes what happened.
2. Reducer – It is a place to determine how the state will change.
3. Store – State/Object tree of the entire application is saved in the store.
4. View – Simply displays the data provided by the Store.

• Redux uses Store for storing all the application state at one place.
• Components state is stored in the Store and they receive updates from the store itself.
• The single state tree makes it easier to keep track of changes over time and debug or inspect the application.

1. Single source of truth.
2. State is read-only
3. Changes are made with pure functions.

• Redux one of the hottest libraries for front end development.
• Redux is a predictable state container for JavaScript apps.
• Mostly used for applications state Management.
• Applications developed with Redux are easy to test.
• Helps to write applications that behave consistently and can run in different environments.